CN115722961A - Tool changing mechanism with functions of controlling tool loosening and tool pulling - Google Patents
Tool changing mechanism with functions of controlling tool loosening and tool pulling Download PDFInfo
- Publication number
- CN115722961A CN115722961A CN202111010127.8A CN202111010127A CN115722961A CN 115722961 A CN115722961 A CN 115722961A CN 202111010127 A CN202111010127 A CN 202111010127A CN 115722961 A CN115722961 A CN 115722961A
- Authority
- CN
- China
- Prior art keywords
- pull rod
- tool
- shoulder
- mandrel
- disc
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Images
Landscapes
- Automatic Tool Replacement In Machine Tools (AREA)
Abstract
The invention discloses a tool changing mechanism with functions of controlling tool loosening and tool pulling, which comprises: the tool apron comprises a tool apron shell, a mandrel, a first linkage component and a second linkage component, wherein the mandrel is arranged in an accommodating space of the tool apron shell, a cavity is arranged in the mandrel, the mandrel is provided with a key groove which is formed along the axial direction, one end of the key groove is provided with a first shoulder, and the other end of the key groove is provided with a pull claw; the first linkage assembly is provided with a first pull rod, one end of the first pull rod is provided with an external thread, the other end of the first pull rod is provided with a connecting part, and the connecting part is driven by an air cylinder; the second linkage assembly is provided with a second pull rod and a pressing head, one end of the second pull rod is provided with an internal thread, the other end of the second pull rod is provided with the pressing head, the rod body of the second pull rod is provided with a sliding key, the sliding key is positioned in the key groove, the external thread of the first pull rod is screwed with the internal thread of the second pull rod, and the movement of fixing the broach or taking off the cutting tool by loosening the broach is completed through relative screwing rotation.
Description
Technical Field
The invention relates to the technical field of tool changing of turning and milling composite toolsets, in particular to a tool changing mechanism with functions of controlling tool loosening and tool pulling.
Background
Regarding the conventional tool loosening and broaching technique for the spindle of the machine tool, for example, an improvement of the spindle broaching mechanism provided in the patent 574955 is disclosed, in which when the tool is loosened, as shown in the above patent fig. 2-6, the pneumatic cylinder 15 is activated to push the cylinder push block 152 to move downward (as shown in fig. 3), at this time, the guide pin 23 pushes the double-force sliding sleeve 25 to move to release the pulling force, and when the striking block 151 of the pneumatic cylinder 15 contacts the spindle pull rod 22 and pushes the spindle pull rod 22, the spindle pull rod 22 will drive the tool clamping claw 27 to withdraw from the lower shaft hole 213 of the spindle 21, so as to achieve the tool loosening operation.
When the knife is pulled, the pneumatic cylinder 15 is pulled back, the force-multiplying sliding sleeve 25 is pushed upwards by the restoring force of the butterfly spring 26 to contact the elastic collar 28 (as shown in fig. 5), when the force-multiplying sliding sleeve 25 is pushed upwards, the top side edge of the force-multiplying sliding sleeve 25 acts on the inclined surfaces 251 and 282 between the top side wall edges of the elastic collar 28, so as to push the elastic collar 28 back to the inclined surface 214 position positioned at the top end of the main shaft 21, and simultaneously, the elastic collar 28 pushes the pressure ring 24 to drive the main shaft pull rod 22 to ascend, and then the main shaft pull rod 22 drives the knife clamping claw 27 to retract into the lower shaft hole 213 to realize the knife pulling action (as shown in fig. 6).
Since the elastic sleeve 28 must be pushed by the restoring force of the disc spring 26 in the conventional unclamping and broaching techniques, a sufficient space is required to accommodate the disc spring 26, which increases the volume of the unclamping and broaching mechanism and is inconvenient to use.
Disclosure of Invention
The invention aims to provide a tool changing mechanism with functions of controlling tool loosening and tool pulling, which can reduce the space requirement and further reduce the volume of the tool changing mechanism.
In order to achieve the above object, the present invention provides a tool changing mechanism with functions of controlling tool releasing and tool pulling, comprising: a tool apron shell, the interior of which is provided with an accommodating space; a mandrel, which is arranged in the tool apron shell and is positioned in the containing space, a cavity communicated with two ends is formed in the mandrel, a key groove is formed in the middle section of the cavity of the mandrel along the axial direction of the cavity, a first shoulder is formed at one end of the cavity positioned in the key groove, and a predetermined number of pulling claws are pivoted at the other end of the cavity; the first linkage assembly is positioned in the cavity and is provided with a first pull rod, one end of the first pull rod is provided with an external thread, the other end of the first pull rod is provided with a connecting part, and the connecting part is driven by an air cylinder; and a second linkage assembly located in the chamber, the second linkage assembly having a second pull rod and a pressure head, the second pull rod being axially disposed along the mandrel, one end of the second pull rod having an internal thread, the other end of the second pull rod having the pressure head, the second pull rod having a sliding key embedded therein, the sliding key being a key slot corresponding to the mandrel, the second pull rod being screwed to the external thread of the first pull rod through the internal thread, the second pull rod being rotated by the relative screwing to cause the second pull rod to move closer to or away from the first pull rod, when the second pull rod is close to the first pull rod, the pressure head being close to the pull claws to be in a pressure state, and when the second pull rod is far from the first pull rod, the pressure head being far from the pull claws to be in a pressure release state.
In one embodiment, the first linkage assembly has a disc spring, the disc spring is sleeved on the first pull rod, the first pull rod has a second shoulder, the disc spring directly or indirectly abuts against the first shoulder and the second shoulder, and when the disc spring is compressed, a margin space is formed between the second shoulder and the end edge of the mandrel.
In one embodiment, the first linkage assembly further has a spacer ring, a thrust spacer ring and a bearing, the spacer ring is located between the first shoulder and the disc-shaped spring, the thrust spacer ring is located between the disc-shaped spring and the bearing, and the disc-shaped spring is indirectly abutted against the first shoulder and the second shoulder.
Therefore, the invention provides a tool changing mechanism with functions of controlling tool loosening and tool pulling, wherein the first pull rod and the second pull rod are screwed to rotate to generate relative movement, compared with the effect of providing movement by using a disc-shaped spring in the prior art, the tool changing mechanism saves more space, and further can reduce the volume of the tool changing mechanism.
Drawings
FIG. 1 is a perspective view of a preferred embodiment of the present invention;
FIG. 2 is an exploded view of a preferred embodiment of the present invention;
FIG. 3 is a cross-sectional view taken along line 3-3 of FIG. 1;
FIG. 4 is a diagram of the operation of a preferred embodiment of the present invention;
FIG. 5 is a diagram of the operation of a preferred embodiment of the present invention;
FIG. 6 is a first state of use diagram of a preferred embodiment of the present invention showing the tool changer coupled to the servomotor;
FIG. 7 is a cross-sectional view taken along line 7-7 of FIG. 6;
FIG. 8 is a second state of use diagram of a preferred embodiment of the present invention, showing the tool changing mechanism coupled to the spindle motor;
fig. 9 is a cross-sectional view taken along line 9-9 of fig. 8.
[ description of reference ]
10 tool changing mechanism
20, tool apron shell
21, a containing space
30 spindle
31 chamber
33 key groove
35 first shoulder
40 first linkage assembly
41 first pull rod
42, spacer ring
43 external screw thread
44, thrust spacer ring
45 connection part
451 outer hexagonal end
46 bearing
47 disk spring
49 second shoulder
50: second linkage component
51 second draw bar
53 draw claw
55: internal thread
56 sliding key
58: pressing head
100: cylinder
101: inner hexagonal sleeve
103 servo motor
105 spindle motor
106 right-handed bevel gear
107 left-handed bevel gear
110 cutting tool
112, tool apron
Margin space S
Detailed Description
To illustrate the technical features of the present invention in detail, the following preferred embodiments are described in conjunction with the drawings, in which:
as shown in fig. 1-3, a first preferred embodiment of the present invention provides a tool changing mechanism 10 with tool releasing and pulling control functions, which mainly comprises a tool holder housing 20, a spindle 30, a first linkage assembly 40 and a second linkage assembly 50, wherein:
the holder housing 20 has an accommodating space 21 therein.
The spindle 30 is disposed in the holder housing 20 and located in the accommodating space 21, a cavity 31 communicating two ends is formed inside the spindle 30, a key slot 33 is formed in a middle section of the cavity 31 of the spindle 30 along an axial direction of the spindle, a first shoulder 35 is formed at one end of the cavity 31 located in the key slot 33, a predetermined number of pulling claws 53 are pivoted at the other end of the cavity 31, and the pulling claws 53 are used for pulling and holding the holder 112 of the fixed cutting tool 110.
The first linkage assembly 40 is located in the chamber 31, the first linkage assembly 40 has a first pull rod 41, one end of the first pull rod 41 has an external thread 43, the other end has a connection portion 45, and a second shoulder portion is disposed between the connection portion 45 and the external thread 43, wherein the connection portion 45 can be driven by a cylinder 100 (as shown in fig. 6), and the outermost side thereof has an external hexagonal end 451, and the external hexagonal end 451 can be sleeved by an internal hexagonal sleeve 101 disposed on the cylinder 100.
The first linkage assembly 40 further has a spacer ring 42, a thrust spacer ring 44, a bearing 46 and a disc-shaped spring 47, the spacer ring 42 is located between the first shoulder 35 and the disc-shaped spring 47, the thrust spacer ring 44 is located between the disc-shaped spring 47 and the bearing 46, the disc-shaped spring 47 is sleeved on the first pull rod 41 and indirectly abuts against the first shoulder 35 and the second shoulder 49, when the disc-shaped spring 47 is in a compressed state, the second shoulder 49 and the end edge of the mandrel 30 form a margin space S (as shown in fig. 3).
The second linkage assembly 50 is located in the cavity 31, the second linkage assembly 50 has a second pull rod 51 and a pressing head 58, the second pull rod 51 is disposed along the axial direction of the spindle 30, one end of the second pull rod 51 has an internal thread 55, the other end is connected to the pressing head 58, a sliding key 56 is embedded in the shaft of the second pull rod 51, the sliding key 56 corresponds to the key slot 33 of the spindle 30, the second pull rod 51 is screwed to the external thread 43 of the first pull rod 41 through the internal thread 55, the second pull rod 51 can be driven to move closer or away relative to the first pull rod 41 through relative screwing, that is, when the first pull rod 41 rotates in place, the second pull rod 51 will move closer to the first pull rod 41, and the pressing head 58 is driven to approach the pulling claw 53 located in the cavity 31 of the spindle 30, and further to present a pressing state (as shown in fig. 3), the tool 110 for fixing a pin or milling tool, otherwise, when the second pull rod 51 moves away from the pressing head 41, the pressing claw 53 is driven to move away from the pressing claw 53, and the pressing head 58 is not to present a state for releasing the cutting tool 110 (as shown in detail in fig. 3), and the cutting head is not used for releasing the cutting tool 110, such a state that the cutting head is not used for replacing the cutting tool 53, as the cutting structure shown in fig. 5.
The above is a component structure of a preferred embodiment of the present invention, and two preferred modes of use of a preferred embodiment of the present invention on a composite processing machine are described below.
As shown in fig. 6 and 7, a first usage of the present invention is to cooperate with a servo motor 103, when the tool changer 10 of the present invention performs the broaching to fix the tool 110, the cylinder 100 moves to push the inner hexagonal sleeve 101 to connect with the outer hexagonal end 451 of the first pull rod 41, and then the servo motor 103 rotates forward to synchronously drive the first pull rod 41 to rotate, because the tool changer 10 is in the unclamping state (as shown in fig. 5), the disk spring 47 is in the releasing state, at this time, the clearance space S is not present, and the sliding key 56 of the second pull rod 51 is limited by the key slot 33 of the spindle 30, and can only move along the long axis direction of the spindle 30, that is, when the servo motor 103 rotates forward to drive the second pull rod 51 to move toward the direction of the first pull rod 41, the pressing head 58 and the pulling claws 53 are driven to form the fastening state (changed from fig. 5 to fig. 4), thereby achieving the effect of broaching; then, the servo motor 103 will continue to drive the first pull rod 41 to rotate, since the pressing head 58 and the pulling claws 53 are already in the pressed state, the second pull rod 51 will not move any more, and the first pull rod 41 will start to move along the mandrel 30 toward the direction of the second pull rod 51 (changed from fig. 4 to the state of fig. 3), and the disc spring 47 will be compressed until the disc spring 47 is completely compressed, the servo motor 103 stops rotating, the cylinder 100 will separate the inner hexagonal sleeve 101 from the outer hexagonal end 451 of the connecting portion 45, and the operation of the tool changing mechanism 10 of the present invention for fixing the cutting tool 110 by pulling the tool is completed.
When the tool changer 10 of the present invention is to loosen the cutting tool 110, the cylinder 100 is operated again to push the socket 101 to connect with the external hexagonal end 451 of the first pull rod 41, and the servo motor 103 is rotated in reverse direction to rotate the first pull rod 41, because the rear section of the tool changer 10 in the tool pulling state (as shown in fig. 3), the disc spring 47 is compressed to form the margin space S, so the first pull rod 41 will start to move in the direction away from the second pull rod 51 along the mandrel 30 (from fig. 3 to fig. 4), and the disc spring 47 will be released until the disc spring 47 is completely released and fills the margin space S, the first pull rod 41 will not move any more, at this time, the servo motor 103 will continue to drive the first pull rod 41 to rotate, which will drive the second pull rod 51 to move in the direction away from the first pull rod 41 (as shown in fig. 4 to fig. 5), so as to drive the clamping jaws 58 to release the cutting tool changer 110, and the tool changer will release the tool pulling state of the milling tool 53 or the tool changer 10.
Therefore, the present invention provides a tool changing mechanism 10 with functions of controlling tool loosening and tool pulling, wherein the first pull rod 41 has the external thread 43, the second pull rod 51 has the internal thread 55, and the disc spring 47 and the margin space S are provided, so that when the present invention is in a tool pulling state, the second pull rod 51 will not be displaced by a slight external force to cause the tool loosening, and the stability of the tool holder 112 can be improved.
Compared with the prior art in which only a disc spring is used for providing a moving effect, the tool changing mechanism 10 has the advantage of saving more space and further reducing the volume of the tool changing mechanism 10.
As shown in fig. 8 and 9, the second way of the present invention is to directly cooperate with a spindle motor 105 without the servo motor 103, the spindle motor 105 is connected with a right bevel gear 106 and a left bevel gear 107, the left bevel gear 107 is sleeved on the spindle 30, when the tool changer 10 of the present invention performs broaching to fix the cutting tool 110, the air cylinder 100 pushes the inner hexagonal sleeve 101 to connect with the outer hexagonal end 451 of the first pull rod 41, and the right bevel gear 106 and the left bevel gear 107 are driven to rotate by the forward rotation of the spindle motor 105, so as to drive the spindle 30 to rotate, since the tool changer 10 is in the unclamping state (as shown in fig. 5), the disc spring 47 is in the releasing state, which does not present the margin space S, and the sliding key 56 of the second pull rod 51 is restricted by the key groove 33 of the spindle 30 and can only move along the long axis of the spindle 30, when the spindle motor 105 rotates forward to urge the second pull rod 51 to approach the first pull rod 41, so as to change the pushing state of the pushing jaw 58 to the pulling state (fig. 4); then, the spindle motor 105 will continue to drive the second pull rod 51 to rotate, and since the pressing head 58 and the pulling claws 53 are already in the pressed state, the second pull rod 51 will not move any more, and the first pull rod 41 will start to move along the mandrel 30 in the direction away from the second pull rod 51 and compress the disc spring 47 (changed from fig. 4 to the state of fig. 3), when the disc spring 47 is completely compressed, the spindle motor 105 will stop rotating, and the cylinder 100 will disengage the inner hexagonal sleeve 101 from the outer hexagonal end 451 of the connecting portion 45, thereby completing the operation of the tool changing mechanism 10 for fixing the pin cutter 110.
When the tool changer 10 of the present invention is to loosen the tool and remove the originally fixed cutting tool 110, and also to let the second usage of the present invention execute tool loosening, the air cylinder 100 again pushes the socket 101 to connect with the external hexagonal end 451 of the first pull rod 41, the right bevel gear 106 and the left bevel gear 107 are driven by the spindle motor 105 rotating in reverse direction, so as to drive the spindle 30 to rotate, the disc spring 47 is compressed to form the margin space S due to the rear section of the tool changer 10 in the tool pulling state (as shown in fig. 3), so that the first pull rod 41 will start to move in the direction of the spindle 30 away from the second pull rod 51 (from fig. 3 to fig. 4), and the disc spring 47 will be released until the disc spring 47 is completely released and fills the margin space S, the first pull rod 41 will not move again, at this time, since the spindle 105 continues to drive the second pull rod 51 to rotate, the second pull rod 51 will start to move away from the second pull rod 41 and push the tool changing direction of the second pull head 5 (as shown in fig. 4), so as to release the tool changer 5, the tool loosening state can be completed.
Therefore, the present invention provides a tool changing mechanism with functions of controlling tool release and tool withdrawal, which can directly drive the second pull rod 51 to rotate by the spindle motor 105 without the servo motor 103, so as to complete the tool withdrawal fixing or tool withdrawal releasing operation of the tool changing mechanism 10 for removing the cutting tool 110, thereby effectively saving cost and improving convenience.
The other effects achieved by the present invention are similar to the first usage, and therefore, the description thereof is omitted.
Claims (3)
1. A tool changing mechanism with functions of controlling tool loosening and tool pulling comprises:
a tool apron shell, the interior of which is provided with an accommodating space;
a mandrel, which is arranged in the tool apron shell and is positioned in the containing space, a cavity communicated with two ends is formed in the mandrel, a key groove is formed in the middle section of the cavity of the mandrel along the axial direction of the cavity, a first shoulder is formed at one end of the cavity positioned in the key groove, and a predetermined number of pulling claws are pivoted at the other end of the cavity;
the first linkage assembly is positioned in the cavity and is provided with a first pull rod, one end of the first pull rod is provided with an external thread, the other end of the first pull rod is provided with a connecting part, and the connecting part is driven by an air cylinder; and
the second linkage assembly is positioned in the cavity and provided with a second pull rod and a pressing head, the second pull rod is axially arranged along the mandrel, one end of the second pull rod is provided with an internal thread, the other end of the second pull rod is provided with the pressing head, a sliding key is embedded in the rod body of the second pull rod, the sliding key corresponds to the key groove of the mandrel, the second pull rod is screwed on the external thread of the first pull rod through the internal thread and rotates through relative screwing, so that the second pull rod generates an approaching or separating action relative to the first pull rod, when the second pull rod approaches the first pull rod, the pressing head approaches the pull claws to present a pressing state, and when the second pull rod leaves the first pull rod, the pressing head leaves the pull claws to present a releasing pressing state.
2. The tool changing mechanism with the function of controlling loosening and pulling according to claim 1, wherein: the first linkage assembly is provided with a disc-shaped spring, the disc-shaped spring is sleeved on the first pull rod, the first pull rod is provided with a second shoulder, the disc-shaped spring directly or indirectly props against the first shoulder and the second shoulder, and when the disc-shaped spring is compressed, a margin space is formed between the second shoulder and the end edge of the mandrel.
3. The tool changing mechanism with the function of controlling loosening and pulling according to claim 2, wherein: the first linkage assembly further comprises a spacer ring, a thrust spacer ring and a bearing, wherein the spacer ring is positioned between the first shoulder and the disc-shaped spring, the thrust spacer ring is positioned between the disc-shaped spring and the bearing, and the disc-shaped spring is propped against the first shoulder and the second shoulder in an indirect mode.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111010127.8A CN115722961A (en) | 2021-08-31 | 2021-08-31 | Tool changing mechanism with functions of controlling tool loosening and tool pulling |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111010127.8A CN115722961A (en) | 2021-08-31 | 2021-08-31 | Tool changing mechanism with functions of controlling tool loosening and tool pulling |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN115722961A true CN115722961A (en) | 2023-03-03 |
Family
ID=85291222
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202111010127.8A Pending CN115722961A (en) | 2021-08-31 | 2021-08-31 | Tool changing mechanism with functions of controlling tool loosening and tool pulling |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN115722961A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117226160A (en) * | 2023-11-10 | 2023-12-15 | 泰州市建奇数控设备有限公司 | Automatic conversion mechanism for main shaft head of gantry machining center |
-
2021
- 2021-08-31 CN CN202111010127.8A patent/CN115722961A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117226160A (en) * | 2023-11-10 | 2023-12-15 | 泰州市建奇数控设备有限公司 | Automatic conversion mechanism for main shaft head of gantry machining center |
| CN117226160B (en) * | 2023-11-10 | 2024-03-26 | 泰州市建奇数控设备有限公司 | Automatic conversion mechanism for main shaft head of gantry machining center |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US9302329B2 (en) | Bi-directional quick change tool-less lever and wedge actuated collet chuck, system and/or method for using the same | |
| US5897273A (en) | Deburring tool and process on a hole opposite the tool | |
| CN115722961A (en) | Tool changing mechanism with functions of controlling tool loosening and tool pulling | |
| US20160031068A1 (en) | Screw holding device and screwdriver | |
| US6092964A (en) | Rivet removal tool and method | |
| WO2004020131A1 (en) | Expanding collet assembly for pick-off spindle | |
| US11992911B2 (en) | Tool changing mechanism having function of controlling loosening and pulling tool | |
| CN114918708A (en) | Handle of a knife lock sleeve and tool magazine | |
| TWI769068B (en) | Tool changing mechanism with functions of controlling loosening and broaching | |
| WO2011060499A1 (en) | A tool for setting rivets | |
| CN111299715A (en) | Automatic foldable anti-scraper | |
| JP2004195642A (en) | Power installing tool of spiral coil insert | |
| JP4280327B2 (en) | Automatic screwdriver with removal screw recovery means | |
| JP3669962B2 (en) | Tapping unit | |
| CN105269008A (en) | Cutter rest assembly | |
| CN213559944U (en) | Spring chuck clamping mechanism of numerical control lathe | |
| CN209811357U (en) | Reverse taper hole machining tool and tool shank thereof | |
| JP2868608B2 (en) | Indexable cutting tools | |
| CN220296747U (en) | Quick-change chuck type pen-shaped electric grinder | |
| CN218947582U (en) | Electric tool | |
| CN216938615U (en) | Milling head device | |
| CN115570205B (en) | Cutting tool | |
| CN216028112U (en) | Mechanical main shaft and key processing machine capable of changing tools quickly | |
| CN113649601B (en) | Falling-prevention flexible receiving and containing method for cutting off thin-tube parts by numerical control lathe | |
| CN1224485C (en) | Reciprocating electric tool |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination |