CN219379917U - Tool changing arm for machining center - Google Patents
Tool changing arm for machining center Download PDFInfo
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- CN219379917U CN219379917U CN202320410608.6U CN202320410608U CN219379917U CN 219379917 U CN219379917 U CN 219379917U CN 202320410608 U CN202320410608 U CN 202320410608U CN 219379917 U CN219379917 U CN 219379917U
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P70/00—Climate change mitigation technologies in the production process for final industrial or consumer products
- Y02P70/10—Greenhouse gas [GHG] capture, material saving, heat recovery or other energy efficient measures, e.g. motor control, characterised by manufacturing processes, e.g. for rolling metal or metal working
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- Automatic Tool Replacement In Machine Tools (AREA)
Abstract
The tool changing arm for the machining center is arranged in front of the tool magazine and stretches into the space between the tool magazine and a spindle of a machine tool, and comprises a driving box fixed on the machine tool, an arm shaft in transmission connection with the driving box and a tool changing clamping piece arranged at the front end of the arm shaft and used for grabbing tools, and is characterized in that: the driving box comprises a box body, a gear motor arranged on the box body, an incomplete gear assembly for driving the arm shaft to rotate and a connecting rod for driving the arm shaft to stretch out and draw back, wherein the incomplete gear assembly and the connecting rod are respectively arranged in the box body, the incomplete gear assembly is connected with an output shaft of the gear motor, the arm shaft stretches into the box body to be connected with the incomplete gear assembly, and the connecting rod is hinged between the incomplete gear assembly and the arm shaft. The internal transmission structure of the driving box is simpler, the weight is light, the transmission accuracy is high, the transmission reliability of the tool changing arm is effectively improved, the reliability and the effectiveness of grabbing the tool by the tool changing clamping piece are improved, the falling wind of the tool in the rotating process of the tool changing arm is effectively reduced, and the tool changing safety is improved.
Description
Technical Field
The utility model relates to a tool changing arm for a machining center, which is used for changing a spindle tool on the machining center.
Background
At present, a single tool changing control system is arranged in the traditional machining center in the market, and the tool changing process is the same although the types of tool magazines of the numerical control machining center are different. When the automatic tool changing device receives a tool changing instruction, the spindle immediately stops rotating and accurately stops to a tool changing position, and the tool is loosened; then selecting a tool by the tool magazine, and releasing the tool by the tool magazine along with the movement of the new tool to the tool changing station; the tool changing arm simultaneously picks up the new and old tools on the tool magazine and the main shaft, and after the tool changing table rotates in place, the new and old tools are respectively pushed to the main shaft and the tool changing station of the tool magazine; then the main shaft clamps the cutter, and the cutter changing arm returns to the original position, so that the purpose of cutter changing is achieved. Wherein the rotation and telescopic movement of the tool changing arm is driven by the cam box so as to realize the replacement of the tool. The existing tool changing arm mainly has the following defects:
1. the cam box structure is great, and the weight is heavy, removes inconvenient to lead to the installation degree of difficulty great, transmission accuracy is relatively poor.
2. When the tool changing arm stretches out, the position of the tool clamping opening and the position of the tool form deviation, and the tool cannot be effectively grabbed.
3. The clamping force of the tool changing arm on the tool is limited, and the tool falling risk exists in the rotating process of the tool changing arm.
Disclosure of Invention
According to the tool changing arm for the machining center, the connecting rod is driven by the incomplete gear assembly to move, so that a motor is formed to drive the arm shaft to rotate and stretch, the internal transmission structure of the driving box is simpler, the weight is light, the transmission accuracy is high, the transmission reliability of the tool changing arm is effectively improved, the reliability and the effectiveness of grabbing a tool by the tool changing clamping piece are improved, the falling wind of the tool in the rotating process of the tool changing arm is effectively reduced, and the tool changing safety is improved.
In order to achieve the above purpose, the utility model adopts the following technical scheme:
the tool changing arm for the machining center is arranged in front of the tool magazine and stretches into the space between the tool magazine and a spindle of a machine tool, and comprises a driving box fixed on the machine tool, an arm shaft in transmission connection with the driving box and a tool changing clamping piece arranged at the front end of the arm shaft and used for grabbing tools, and is characterized in that: the driving box comprises a box body, a gear motor arranged on the box body, an incomplete gear assembly for driving the arm shaft to rotate and a connecting rod for driving the arm shaft to stretch out and draw back, wherein the incomplete gear assembly and the connecting rod are respectively arranged in the box body, the incomplete gear assembly is connected with an output shaft of the gear motor, the arm shaft stretches into the box body to be connected with the incomplete gear assembly, and the connecting rod is hinged between the incomplete gear assembly and the arm shaft.
Preferably, the incomplete gear assembly comprises a driving bevel gear coaxially fixed with an output shaft of the gear motor, a driven bevel gear meshed with the driving bevel gear, an incomplete large gear with a gear at only one eighth of the periphery, and a small tooth cylinder matched with the incomplete large gear, wherein the outer diameter of the incomplete large gear is larger than that of the driven bevel gear, the incomplete large gear and the driven bevel gear are coaxially fixed through a driven shaft, the driven shaft is perpendicular to the output shaft of the gear motor and parallel to the arm shaft, the driven shaft and the small tooth cylinder are rotatably arranged on a box body through bearings respectively, the outer diameter of the small tooth cylinder is smaller than that of the driven bevel gear, the small tooth cylinder is coaxially connected with the inner end of the arm end and is arranged below the incomplete large gear, and the incomplete large gear is meshed with the small tooth cylinder along with the rotation of the driven bevel gear.
Preferably, the arm shaft comprises a cutter shaft and a shaft sleeve sleeved on the cutter shaft and fixed with the box body, the inner end of the cutter shaft stretches into the box body and is connected with the small tooth cylinder through a coaxial key, the outer end of the cutter shaft stretches out of the shaft sleeve and is connected with the cutter clamping piece, the connecting rod is hinged between the driving bevel gear and the cutter shaft, and the cutter shaft is pushed to stretch forwards or retract backwards along with the rotation of the driving tooth cone gear.
Preferably, the cutter shaft is provided with an integrally formed limiting convex ring, and the limiting convex ring is positioned in the box body and contacts with the box body along with the forward extension of the cutter shaft to limit the extension length of the cutter shaft.
Preferably, the cam roller protruding outwards in the radial direction is arranged on the cutter shaft in a threaded fit manner, a cam groove arranged along the axial direction and an inner concave ring groove positioned behind the cam groove are formed in the inner wall of the shaft sleeve, and the cam roller extends into the cam groove along with the forward extension of the cutter shaft to limit the rotation of the cutter shaft or is separated from the cam groove along with the backward retraction of the cutter shaft and enters into the inner concave ring groove to eliminate the rotation limitation of the cutter shaft.
Preferably, the tool changing clamping piece comprises a clamping jaw mounting plate fixed with the front end of the arm shaft through a tensioning sleeve and clamping jaws symmetrically arranged at two ends of the clamping jaw mounting plate, and the clamping jaw mounting plate is perpendicular to the arm shaft;
the clamping jaw comprises two clamping jaw sheets which are oppositely arranged, the middle parts of the clamping jaw sheets are hinged with a clamping jaw mounting plate, the outer ends of the two clamping jaw sheets are oppositely arranged to form a tool clamping opening corresponding to a clamping groove on a tool, an elastic pressing limiting column which can be pressed down or rebounded is arranged on the clamping jaw mounting plate, the elastic pressing limiting column clamps the clamping opening of the tool clamping opening at the inner ends of the two clamping jaw sheets, the clamping jaw sheets are close to the inner ends and are connected with a supporting spring which is vertically arranged with the clamping jaw sheets, the supporting spring is connected with the clamping jaw mounting plate, and the clamping jaw is supported to clamp the tool tightly by the clamping jaw tool when the clamping jaw clamps the tool.
The beneficial effects of the utility model are as follows:
1. according to the tool changing arm for the machining center, the incomplete gear assembly drives the arm shaft to rotate, the connecting rod drives the arm shaft to stretch and retract, the incomplete gear assembly is connected with the output shaft of the gear motor to obtain power, the connecting rod is hinged between the incomplete gear assembly and the arm shaft, the incomplete gear assembly drives the connecting rod to move, one motor is formed to drive the arm shaft to rotate and stretch and retract, the internal transmission structure of the driving box is simpler, the weight is light, the transmission accuracy is high, and the transmission reliability of the tool changing arm is effectively improved.
2. The cooperation of wheel roller and cam groove and indent annular has realized that the tool changing holder is stretched out forward and is not rotatable, and the spacing rotation function that can rotate when retracting forward prevents that the tool changing holder from stretching out forward because of rotating and causing the clamping port skew unable with the cutter alignment, guarantees the accurate alignment of tool changing holder and cutter, improves the reliability and the validity that the tool changing holder snatched the cutter.
3. The structure of the tool changing clamping piece can effectively prevent the tool from separating from the tool changing clamping piece, improve the clamping reliability of the tool changing arm on the tool, effectively reduce the falling wind of the tool in the rotating process of the tool changing arm, and improve the tool changing safety.
Drawings
Fig. 1 is a schematic view of a tool changing arm for a machining center in an embodiment.
Fig. 2 is a schematic view of a tool changing arm for a machining center when the case is removed.
Fig. 3 is a cross-sectional view of the sleeve sleeved on the arbor.
Fig. 4 is a schematic view of a sleeve in semi-section.
Fig. 5 is a schematic view of a tool changing clamp.
Fig. 6 is a top view of the tool changing clamp.
Fig. 7 is a cross-sectional view of the tool changing clamp.
Fig. 8 is a schematic view of a machine tool provided with a front end locating hole and a press pin.
Detailed Description
Embodiments of the present utility model are described in detail below with reference to fig. 1 to 8.
The tool changing arm for the machining center is arranged in front of a tool magazine and stretches into a space between the tool magazine and a spindle of a machine tool, and comprises a driving box 1 fixed on the machine tool, an arm shaft 2 in transmission connection with the driving box 1 and a tool changing clamping piece 3 arranged at the front end of the arm shaft 2 and used for grabbing tools, and is characterized in that: the driving box 3 comprises a box body 4, a gear motor 5 arranged on the box body 1, an incomplete gear assembly 6 for driving the arm shaft 2 to rotate and a connecting rod 7 for driving the arm shaft 2 to stretch out and draw back, wherein the incomplete gear assembly 6 and the connecting rod 7 are respectively arranged in the box body 4, the incomplete gear assembly 6 is connected with an output shaft of the gear motor 8, the arm shaft 2 stretches into the box body 4 to be connected with the incomplete gear assembly 6, and the connecting rod 7 is hinged between the incomplete gear assembly 6 and the arm shaft 2.
Above-mentioned tool changing arm for machining center is rotated by incomplete gear assembly 6 drive arm axle 5, and it is flexible to drive arm axle 2 by connecting rod 7, and incomplete gear assembly 6 obtains power with gear motor 5's output shaft, and connecting rod 7 articulates between incomplete gear assembly 6 and arm axle 2, and it is rotatory and flexible that the arm axle is driven by incomplete gear assembly 6 to form a motor, and the inside transmission structure of driving case 1 is simpler, light in weight, and transmission accuracy is high, effectively improves the transmission reliability of tool changing arm.
The incomplete gear assembly 6 comprises a driving bevel gear 61 coaxially fixed with the output shaft of the gear motor 5, a driven bevel gear 62 meshed with the driving bevel gear 61, an incomplete large gear 63 with a gear on only one eighth of the periphery, and a small gear cylinder 64 matched with the incomplete large gear 63, wherein the outer diameter of the incomplete large gear 63 is larger than that of the driven bevel gear 62, the incomplete large gear 63 and the driven bevel gear 62 are coaxially fixed through a driven shaft 65, the driven shaft 65 is perpendicular to the output shaft of the gear motor 5 and parallel to the arm shaft 2, the driven shaft 65 and the small gear cylinder 64 are rotatably arranged on the box body 4 through bearings respectively, the outer diameter of the small gear cylinder 65 is smaller than that of the driven bevel gear 62, the small gear cylinder 64 is coaxially connected with the inner end of the arm end 2 and is arranged below the incomplete large gear 63, and the incomplete large gear 63 is meshed with the small gear cylinder in a way of following the rotation of the driven bevel gear 62. The output shaft of the gear motor 5 drives the driving bevel gear 61 to rotate, the driving bevel gear 61 drives the driven bevel gear 62 to synchronously rotate, the driven bevel gear 62 drives the incomplete large gear 63 to rotate through the driven shaft 65, a half circle gear on the incomplete large gear 63 is meshed with the small gear cylinder 64 after the incomplete large gear 63 rotates, the small gear cylinder 64 is driven to rotate, and the arm shaft 11 synchronously rotates, so that the rotation of the tool changing clamping piece 3 is realized, the arm shaft 2 cannot rotate when the half circle gear on the incomplete large gear 63 is staggered with the gear on the small gear cylinder 64 and is not meshed, the multistep actions that the tool changing clamping piece 12 stretches forwards during tool changing are realized, the driven shaft 64 stretches forwards after retracting and rotating are rotatably supported on the box body 13 through a bearing, and the smoothness of power transmission is ensured.
The arm shaft 2 comprises a cutter shaft 21 and a shaft sleeve 22 sleeved on the cutter shaft 21 and fixed with the box body 4, the inner end of the cutter shaft 21 stretches into the box body 4 to be connected with the small tooth cylinder 64 in a coaxial key manner, the outer end stretches out of the shaft sleeve 22 to be connected with the cutter holder 3, the connecting rod 7 is hinged between the driving bevel gear 61 and the cutter shaft 21, and the cutter shaft 7 is pushed to stretch forwards or retract backwards along with the rotation of the driving tooth cone gear 61. The small tooth cylinder 64 is rotatably arranged on the box body through a bearing and is connected with the inner end key of the cutter shaft 21, the cutter shaft 21 can axially stretch and retract relative to the small tooth cylinder 64 and can rotate along with the rotation of the small tooth cylinder 64, and the small tooth cylinder 64 is used for driving the cutter shaft 21 to rotate and also used for axially supporting the inner end of the cutter shaft 21. The drive bevel gear 61, the connecting rod 7 and the cutter shaft 21 form a crank-connecting rod mechanism, the drive bevel gear 61 rotates for the first half circle, the connecting rod 7 drives the cutter shaft 21 to extend, in the extending process, the incomplete large gear 63 is not meshed with the small tooth cylinder 64, the cutter shaft 21 cannot rotate, the drive bevel gear 61 rotates for the second half circle, the connecting rod 7 pulls the cutter shaft 21 to retract backwards, in the second half section of the backward retraction, the incomplete large gear 63 is meshed with the small tooth cylinder 64 to drive the cutter shaft 21 to rotate 180 degrees, the drive bevel gear 61 continuously rotates the connecting rod to drive the cutter shaft 111 to extend, and the cutter changing process of extending forwards, retracting backwards and rotating 180 degrees is achieved.
The cutter shaft 21 is provided with an integrally formed limiting convex ring 23, and the limiting convex ring 23 is positioned in the box body and contacts with the box body 4 along with the forward extension of the cutter shaft 21 to limit the extension length of the cutter shaft 21. The shaft sleeve 22 is fixed with the box body 4 and cannot rotate, the extension and retraction of the cutter changing shaft 21 are guided, the cutter changing shaft 21 can drive the cutter changing clamping piece 3 to rotate, the limiting convex ring 23 limits the forward extension of the cutter changing shaft 21, the initial position of the limiting convex ring 23 is separated from the inner wall of the box body 4 and is not contacted with the inner wall of the box body 4, the cutter changing shaft 21 extends forwards, the extending length of the cutter changing shaft 21 is maximum when the limiting convex ring 23 contacts with the inner wall of the box body 4, the cutter changing shaft 21 cannot extend forwards any more, the cutter changing clamping piece 3 is prevented from extending forwards to form impact extrusion on a machine tool, and the inner end of the cutter changing shaft 21 is also prevented from being separated from the small tooth cylinder 64.
Wherein, the cam roller 24 protruding outwards along the radial direction is arranged on the cutter shaft 21 in a threaded fit manner, the inner wall of the shaft sleeve 22 is provided with a cam groove 25 arranged along the axial direction and a concave ring groove 26 positioned behind the cam groove 25, the cam roller 24 extends into the cam groove 25 along with the forward extension of the cutter shaft 21 to limit the rotation of the cutter shaft 21 or is separated from the cam groove 25 along with the backward retraction of the cutter shaft 21 and enters into the concave ring groove 26 to eliminate the rotation limitation of the cutter shaft 21. The cam roller 24 is used for preventing the forward extending rotation of the tool changing clamping piece 3, when the tool changing shaft 21 extends forward, the cam roller 24 enters into the cam groove 25 to limit the rotation of the tool changing shaft 21 relative to the shaft sleeve 22, namely, limit the rotation of the tool changing clamping piece 3, when the tool changing shaft 21 retracts backward, the cam roller 24 comes out of the cam groove 25 and enters into the inner concave ring groove 26, the cam roller 24 is not contacted with the inner wall of the inner concave ring groove 26, the rotation of the tool changing shaft 21 is not limited, and at the moment, the tool changing shaft 21 can rotate 180 degrees to drive the tool changing clamping piece 3 to rotate 180 degrees, so that the exchange of the positions of tools is realized. The cam roller 24 is matched with the cam groove 25 and the inner concave ring groove 26, so that the tool changing clamping piece 3 cannot rotate when extending forwards, and can rotate to limit the rotation function when retracting forwards, the tool changing clamping piece is prevented from extending forwards, the deflection of the clamping opening cannot align with a tool due to rotation, the precise alignment of the tool changing clamping piece and the tool is ensured, and the reliability and the effectiveness of the tool changing clamping piece for grabbing the tool are improved.
The tool changing clamping piece 3 comprises a clamping jaw mounting plate 31 fixed with the front end of the arm shaft 2 through a tensioning sleeve and clamping jaws 32 symmetrically arranged at two ends of the clamping jaw mounting plate 31, wherein the clamping jaw mounting plate 31 is perpendicular to the arm shaft 2;
the clamping jaw 32 comprises two clamping jaw sheets 33 which are oppositely arranged, the middle parts of the clamping jaw sheets 33 are hinged with the clamping jaw mounting plate 31, the outer ends of the two clamping jaw sheets 33 are oppositely arranged to form a tool clamping opening 34 corresponding to a clamping groove on a tool, an elastic pressing limiting column 35 which can be pressed down or rebounded is arranged on the clamping jaw mounting plate 31, the elastic pressing limiting column 35 clamps the inner ends of the two clamping jaw sheets 33 to limit the opening of the tool clamping opening 34, the position, close to the inner ends, of the clamping jaw sheets 33 is connected with a supporting spring 36 which is perpendicular to the clamping jaw sheets 33, the supporting spring 36 is connected with the clamping jaw mounting plate 31, and the clamping jaw 33 clamps the tool when the clamping jaw 32 clamps the tool. The clamping jaws 32 are symmetrically arranged at two ends of the clamping jaw mounting plate 31, each clamping jaw 32 is formed by two clamping jaw sheets 33 which are oppositely arranged, a cutter clamping opening 34 is formed between the two clamping jaw sheets 33, an elastic pressing limiting column 35 consists of a spring and a limiting column, the limiting column is clamped at the inner ends of the two clamping jaw sheets 33, the spring compresses the limiting column to be pressed down to separate from the clamping jaw sheets 33 when the pressing force is eliminated, and the spring pushes the limiting column to rise again to contact with the inner ends of the clamping jaw sheets 33; when the elastic pressing limit column 35 is not pressed, the elastic pressing limit column 35 is just clamped between the two clamping jaw sheets 33, at the moment, the two clamping jaw sheets 33 cannot swing outwards, the cutter clamping opening 34 cannot be further opened, a front end locating hole A matched with the front end of the arm shaft 2 is formed in the machine tool, as shown in fig. 8, two pressing pins B are symmetrically arranged on the periphery of the front end locating hole A, the arm shaft 2 stretches forwards and enters into the front end locating hole A, the pressing pins B form one-to-one corresponding pressing with the elastic pressing limit column 35, the elastic pressing limit column 35 of the two clamping jaws 33 is synchronously pressed and separated from the inner ends of the clamping jaw sheets 33, at the moment, the outward swinging of the clamping jaw sheets 33 is not limited, the cutters on the delivery station and the cutters of the main shaft can be respectively pushed into the cutter clamping opening, the cutter clamping opening 34 expands and opens due to the entering of the cutters, the supporting spring 36 is compressed under pressure, the clamping jaw piece 33 is supported by the elastic restoring force of the supporting spring 36, the clamping jaw piece 33 clamps a cutter, the cutter is synchronously pulled out backwards when the cutter changing clamping piece 3 is retracted backwards through the clamping groove corresponding to the cutter clamping opening 34, the front end of the arm shaft 2 is separated from the front end positioning hole A when the cutter changing clamping piece 3 is retracted backwards, the elastic pressing limiting column 35 is synchronously separated from the pressing pin B, the elastic pressing limiting column 35 can spring up to be clamped between the inner ends of the two clamping jaws 33 again, the cutter clamping opening cannot be expanded and opened when the cutter is clamped by the cutter changing clamping piece 3, the cutter is effectively prevented from being separated from the cutter changing clamping piece 3, the clamping reliability of the cutter changing arm to the cutter is improved, the wind of the cutter falling off in the rotating process of the cutter changing arm is effectively reduced, and the cutter changing safety is improved.
The foregoing disclosure of embodiments of the present utility model has been fully described with reference to the accompanying drawings, in which it is to be understood that the embodiments described are merely some of the embodiments of the utility model. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.
Claims (6)
1. The tool changing arm for the machining center is arranged in front of the tool magazine and stretches into the space between the tool magazine and a spindle of a machine tool, and comprises a driving box fixed on the machine tool, an arm shaft in transmission connection with the driving box and a tool changing clamping piece arranged at the front end of the arm shaft and used for grabbing tools, and is characterized in that: the driving box comprises a box body, a gear motor arranged on the box body, an incomplete gear assembly for driving the arm shaft to rotate and a connecting rod for driving the arm shaft to stretch out and draw back, wherein the incomplete gear assembly and the connecting rod are respectively arranged in the box body, the incomplete gear assembly is connected with an output shaft of the gear motor, the arm shaft stretches into the box body to be connected with the incomplete gear assembly, and the connecting rod is hinged between the incomplete gear assembly and the arm shaft.
2. The tool changing arm for a machining center according to claim 1, wherein: the incomplete gear assembly comprises a driving bevel gear coaxially fixed with an output shaft of the gear motor, a driven bevel gear meshed with the driving bevel gear, an incomplete large gear with a gear at only one eighth of the periphery, and a small tooth cylinder matched with the incomplete large gear, wherein the outer diameter of the incomplete large gear is larger than that of the driven bevel gear, the incomplete large gear and the driven bevel gear are coaxially fixed through a driven shaft, the driven shaft is perpendicular to the output shaft of the gear motor and parallel to an arm shaft, the driven shaft and the small tooth cylinder are rotatably arranged on a box body through bearings respectively, the outer diameter of the small tooth cylinder is smaller than that of the driven bevel gear, the small tooth cylinder is coaxially connected with the inner end of an arm end and is arranged below the incomplete large gear, and the incomplete large gear is meshed with the small tooth cylinder along with the rotation of the driven bevel gear.
3. The tool changing arm for a machining center according to claim 2, wherein: the arm shaft comprises a cutter shaft and a shaft sleeve sleeved on the cutter shaft and fixed with the box body, the inner end of the cutter shaft stretches into the box body and is connected with the small tooth cylinder through a coaxial key, the outer end of the cutter shaft stretches out of the shaft sleeve and is connected with the cutter clamping piece, the connecting rod is hinged between the driving bevel gear and the cutter shaft, and the cutter shaft is pushed to stretch forwards or retract backwards along with the rotation of the driving tooth bevel gear.
4. A tool changing arm for a machining center according to claim 3, wherein: the cutter shaft is provided with an integrally formed limiting convex ring, and the limiting convex ring is positioned in the box body and contacts with the box body along with the forward extension of the cutter shaft to limit the extension length of the cutter shaft.
5. A tool changing arm for a machining center according to claim 3, wherein: the cam roller is arranged on the shaft in a threaded fit manner, a cam groove arranged along the axial direction and an inner concave ring groove positioned behind the cam groove are arranged on the inner wall of the shaft sleeve, and the cam roller extends into the cam groove along with the forward extension of the shaft to limit the rotation of the shaft or is separated from the cam groove along with the backward retraction of the shaft and enters into the inner concave ring groove to eliminate the rotation limitation of the shaft.
6. The tool changing arm for a machining center according to claim 1, wherein: the method is characterized in that: the tool changing clamping piece comprises a clamping jaw mounting plate fixed with the front end of the arm shaft through a tensioning sleeve and clamping jaws symmetrically arranged at two ends of the clamping jaw mounting plate, and the clamping jaw mounting plate is perpendicular to the arm shaft;
the clamping jaw comprises two clamping jaw sheets which are oppositely arranged, the middle parts of the clamping jaw sheets are hinged with a clamping jaw mounting plate, the outer ends of the two clamping jaw sheets are oppositely arranged to form a tool clamping opening corresponding to a clamping groove on a tool, an elastic pressing limiting column which can be pressed down or rebounded is arranged on the clamping jaw mounting plate, the elastic pressing limiting column clamps the clamping opening of the tool clamping opening at the inner ends of the two clamping jaw sheets, the clamping jaw sheets are close to the inner ends and are connected with a supporting spring which is vertically arranged with the clamping jaw sheets, the supporting spring is connected with the clamping jaw mounting plate, and the clamping jaw is supported to clamp the tool tightly by the clamping jaw tool when the clamping jaw clamps the tool.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320410608.6U CN219379917U (en) | 2023-03-07 | 2023-03-07 | Tool changing arm for machining center |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320410608.6U CN219379917U (en) | 2023-03-07 | 2023-03-07 | Tool changing arm for machining center |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN219379917U true CN219379917U (en) | 2023-07-21 |
Family
ID=87196640
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202320410608.6U Active CN219379917U (en) | 2023-03-07 | 2023-03-07 | Tool changing arm for machining center |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN219379917U (en) |
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2023
- 2023-03-07 CN CN202320410608.6U patent/CN219379917U/en active Active
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