CN110039094B - Angle head high-precision connecting structure for horizontal machining center - Google Patents
Angle head high-precision connecting structure for horizontal machining center Download PDFInfo
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- CN110039094B CN110039094B CN201910432912.9A CN201910432912A CN110039094B CN 110039094 B CN110039094 B CN 110039094B CN 201910432912 A CN201910432912 A CN 201910432912A CN 110039094 B CN110039094 B CN 110039094B
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- 238000003825 pressing Methods 0.000 claims abstract description 76
- 230000005540 biological transmission Effects 0.000 claims abstract description 51
- 230000005484 gravity Effects 0.000 claims abstract description 21
- 238000003754 machining Methods 0.000 description 11
- 210000000078 claw Anatomy 0.000 description 6
- 238000000926 separation method Methods 0.000 description 5
- 238000005516 engineering process Methods 0.000 description 4
- 238000000034 method Methods 0.000 description 4
- 238000000605 extraction Methods 0.000 description 2
- 238000003780 insertion Methods 0.000 description 2
- 230000037431 insertion Effects 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 230000002093 peripheral effect Effects 0.000 description 2
- 229910000639 Spring steel Inorganic materials 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 230000000295 complement effect Effects 0.000 description 1
- 238000003801 milling Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000009827 uniform distribution Methods 0.000 description 1
Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23C—MILLING
- B23C1/00—Milling machines not designed for particular work or special operations
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- 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
- B23Q1/00—Members which are comprised in the general build-up of a form of machine, particularly relatively large fixed members
- B23Q1/25—Movable or adjustable work or tool supports
-
- 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
- B23Q1/00—Members which are comprised in the general build-up of a form of machine, particularly relatively large fixed members
- B23Q1/70—Stationary or movable members for carrying working-spindles for attachment of tools or work
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Abstract
The invention discloses a high-precision connecting structure of an angle head for a horizontal machining center, which comprises a driving main shaft and a transmission main shaft, wherein three axial pressing end surfaces are arranged on an angle head shell, an axial positioning end surface is arranged on the main shaft shell, a tool changing avoiding opening is arranged between two adjacent axial pressing end surfaces, the three axial pressing end surfaces enclose a pressing triangle, and the gravity center of the angle head is positioned in the pressing triangle; the main shaft shell is provided with a corner clamping cylinder, and the angle head shell is provided with a clamping and pressing part; a circumferential stable connecting device is arranged between the angle head shell and the main shaft shell. The axial pressing end face is pressed against the axial positioning end face, and the gravity center of the angle head is arranged in the pressing triangle, so that the angle head is stably and quickly connected in the axial direction, and radial runout of the angle head is avoided. The invention has the advantages of quick and accurate positioning and high connection precision.
Description
Technical Field
The invention relates to the technical field of numerical control machining, in particular to a high-precision angle head connecting structure for a horizontal machining center.
Background
The precision machining belongs to advanced manufacturing technology, mainly refers to various machining with machining precision and surface finish degree higher than those of the corresponding machining methods, can improve the performance and quality of products, promote miniaturization of the products, enhance interchangeability of parts, and is beneficial to automatic production and the like.
The horizontal machining center is one of the devices for precision machining, the angle heads are mainly utilized to perform operations such as multi-angle milling, a plurality of angle heads are often required to be replaced in the machining process of the same part, the angle heads are automatically replaced by the rotary cutter arms in cooperation with automatic control of the horizontal machining center, and high requirements are provided for assembly efficiency during angle head replacement, precision in angle head connection and the like.
At present, the horizontal machining center mainly uses German equipment and Japanese equipment, and is influenced by equipment purchasing cost, domestic purchasing of the horizontal machining center mainly uses Japanese equipment, the angle head is connected, the mode that a conical cylinder on the angle head is matched with a main shaft to perform center positioning and a circumferential stop pin is matched with a stop block on a main shaft shell to perform circumferential positioning is mainly relied on, and the connecting mode has some problems:
(1) The angle head is integrally and transversely connected, and the conical cylinder on the angle head is matched with the main shaft in a conical manner because the overall weight of the angle head is large, so that the angle head can incline due to dead weight after being connected, and the distance between the upper edge of the end face of the angle head and the main shaft shell is larger than the distance between the lower edge of the end face of the angle head and the main shaft shell by about 0.085mm even though the angle head of the minimum model is measured, so that radial runout occurs in the working process of the angle head; the precision machining of the horizontal machining center reaches micron level, and even radial runout of the angle head caused by 0.085mm can seriously affect the precision machining; the prior art also tries to make the angle head tightly lean against the main shaft shell by adopting a structure that the De-system pressing end face is matched with the pressing cylinder, thereby eliminating the inclined gap, but because the insertion and extraction stroke of the solar rotary cutter arm is relatively short, the insertion and extraction stroke of the solar rotary cutter arm is only realized that the conical barrel of the angle head withdraws from the main shaft, and the pressing end face is realized by arranging pressing nails on the end face of the angle head and the end face of the main shaft shell, in order to avoid that the pressing nails block the rotary cutter arm or the angle head during cutter changing, the arrangement of the pressing end face cannot form circumferential uniform distribution, the balance of the pressing force of the pressing cylinder cannot be ensured, and the angle head cannot be stably pressed against the main shaft shell, thus forming mutual contradiction, so that at present, large manufacturers and users do not have mature technical means to solve the problems.
(2) After the circumferential stop pin is inserted into the stop block, only bus contact exists between the circumferential stop pin and the stop hole, and structures such as the circumferential stop pin and the stop hole are easy to damage in frequent shaking when the angle head works.
(3) The stop hole on the stop block is a cylindrical hole or a conical hole, a fit clearance exists between the circumferential stop pin and the stop hole due to the fact that the stop hole is convenient to assemble, the clearance is about 0.01mm, when the angle head works normally, circumferential shaking occurs due to the fit clearance, even the angle head can incline to form fit with the dead weight of the angle head, and therefore the angle head shakes unordered, and precision machining is seriously affected.
Disclosure of Invention
The invention aims to solve the technical problem of providing the high-precision angle head connecting structure for the horizontal machining center, which is convenient to assemble and disassemble, accurate and quick in positioning, capable of avoiding shaking of the angle head and improving the connection precision.
In order to solve the technical problems, the technical scheme of the invention is as follows: the high-precision angle head connecting structure for the horizontal machining center comprises a driving main shaft rotatably installed in a main shaft shell and a transmission main shaft rotatably installed in the angle head shell, wherein a central connecting device is arranged between the transmission main shaft and the driving main shaft, three axial pressing end faces are arranged on the angle head shell, a cutter changing avoidance port is arranged between two adjacent axial pressing end faces, the centers of the three axial pressing end faces enclose a pressing triangle, and the gravity center of the angle head is positioned in the pressing triangle; the main shaft shell is provided with axial positioning end faces in one-to-one correspondence with the axial pressing end faces, corner clamping cylinders are respectively arranged on the main shaft shell at the axial positioning end faces, and clamping pressing parts in one-to-one correspondence with the piston rod ends of the corner clamping cylinders are arranged on the angle head shell; and a circumferential stable connecting device is arranged between the angle head shell and the main shaft shell.
As a preferable technical scheme, the outer center of the pressing triangle is overlapped with the gravity center of the angle head.
As the preferable technical scheme, circumference firm connecting device is including setting up circumference locating pin on the angle head casing and fixed setting is in on the main shaft casing and with circumference locating hole that circumference locating pin corresponds, circumference locating hole is interior to follow circumference locating hole inner wall circumference equipartition has two at least elasticity lockpin arc boards, and two at least constitutes the lockpin space between the elasticity lockpin arc board, the tip of circumference locating pin is fixed to be equipped with can insert the toper location portion in lockpin space.
As a preferable technical scheme, the circumferential stable connection device further comprises a stop mounting hole arranged on the angle head shell, a circumferential stop pin is slidably arranged in the stop mounting hole, a circumferential stop groove which is radially arranged along the driving main shaft is arranged on the main shaft shell, and the cross section of the circumferential stop groove is in an inverted conical shape; the outer end part of the circumferential stop pin is provided with a conical stop part matched with the circumferential stop groove; an overhanging force application spring is arranged between the circumferential stop pin and the stop mounting hole, an overhanging limiting protrusion is arranged on the circumferential stop pin, a protruding chute corresponding to the overhanging limiting protrusion is arranged on the inner wall of the stop mounting hole, and an overhanging limiting end face is arranged on the side surface of the protruding chute, which is close to the orifice of the stop mounting hole.
As the preferable technical scheme, be equipped with on the transmission main shaft and rotate the separation and reunion fin, protruding spout intercommunication the locking mounting hole with the mounting hole of transmission main shaft, rotate and be equipped with on the separation and reunion fin and be located the inboard transmission shaft separation and reunion groove of overhanging spacing terminal surface, overhanging spacing arch stretches out protruding spout is equipped with can stretch into the transmission separation and reunion arch in the transmission shaft separation and reunion groove.
As an optimized technical scheme, the central connecting device comprises a central connecting cylinder arranged at the end part of the transmission main shaft, a central sleeve corresponding to the central connecting cylinder is arranged on the driving main shaft, and a rotary connecting pin and/or a rotary connecting key are arranged between the transmission main shaft and the driving main shaft.
By adopting the technical scheme, the clamping of the corner clamping cylinder enables the axial pressing end face to be tightly abutted against and matched with the axial positioning end face, and the gravity center of the angle head is positioned in the pressing triangle, so that the angle head can be stably and quickly connected in the axial direction, and radial runout of the angle head caused by axial deflection of the angle head due to dead weight is avoided. The tool changing avoidance port can facilitate tool changing of the rotary tool changing arm, the circumferential locating pin and the circumferential stop pin can be matched to quickly complete circumferential connection, and circumferential Xiang Huangdong of the angle head is avoided. The invention has the advantages of convenient disassembly and assembly, quick and accurate positioning and high connection precision.
Drawings
The following drawings are only for purposes of illustration and explanation of the present invention and are not intended to limit the scope of the invention. Wherein:
FIG. 1 is a schematic view of an assembled angle head according to an embodiment of the present invention;
FIG. 2 is a schematic elevational view of a spindle housing according to an embodiment of the present invention, not showing an angle head;
FIG. 3 is a schematic view of the A-A structure of FIG. 2;
FIG. 4 is a schematic perspective view of the spindle housing according to the embodiment of the present invention without the angle head housing;
FIG. 5 is a schematic perspective view of an angle head housing according to an embodiment of the present invention;
Fig. 6 is a schematic structural view of a pressing triangle and a tool changing avoidance port on a housing of an angle head according to an embodiment of the present invention, wherein a center line is used for illustrating the center of gravity of the angle head, and a broken line is used for illustrating the pressing triangle.
In the figure: 1-rotating a cutter arm; 2-an angle head housing; 20-axially pressing against the end face; 21-a circumferential locating pin; 22-a conical positioning part; 23-a circumferential stop pin; 24-conical stop; 25-overhanging force spring; 26-a convex chute; 27-overhanging limit protrusions; 28-a transmission clutch projection; 29-clamping the pressing portion; 3-a transmission main shaft; 31-rotating the clutch fin; 32-a transmission shaft clutch groove; 4-a spindle housing; 40-axially locating the end face; 41-circumferential positioning holes; 42-elastic locking pin arc plate; 43-circumferential stop groove; 5-driving a main shaft; 6-a corner clamping cylinder; 7-a tool changing avoiding port; 71-against triangles.
Detailed Description
The invention is further illustrated in the following, in conjunction with the accompanying drawings and examples. In the following detailed description, exemplary embodiments of the invention are described by way of illustration only. It is needless to say that the person skilled in the art realizes that the described embodiments may be modified in various different ways without departing from the spirit and scope of the invention. Accordingly, the drawings and description are to be regarded as illustrative in nature and not as restrictive in scope.
As shown in fig. 1 to 6 together, the high-precision angle head connecting structure for the horizontal machining center comprises a driving spindle 5 rotatably installed in a spindle housing 4 and a transmission spindle 3 rotatably installed in an angle head housing 2, wherein a center connecting device is arranged between the transmission spindle 3 and the driving spindle 5. The connection between the spindle housing 4 and the drive spindle 5, and the connection between the angle head housing 2 and the transmission spindle 3 are all known techniques, and will not be described in detail herein. The central connecting device comprises a central connecting cylinder arranged at the end part of the transmission main shaft 3, the driving main shaft 5 is provided with a central sleeve corresponding to the central connecting cylinder, and the central connecting cylinder is preferably a conical cylinder, a rotary connecting pin and/or a rotary connecting key are arranged between the transmission main shaft 3 and the driving main shaft 5, and the transmission main shaft 3 can rotate along with the driving main shaft 5 through pin key connection. The arrangement of the central connecting device is also a known technology, and will not be described in detail here.
As shown in fig. 5 and 6, the angle head housing 2 is provided with three axial pressing end surfaces 20, wherein a tool changing avoidance port 7 is arranged between two adjacent axial pressing end surfaces 20, the centers of the three axial pressing end surfaces 20 enclose a pressing triangle 71, and the center of gravity of the angle head is located in the pressing triangle 71. The angle head housing 2 is provided with not only the transmission main shaft 3 but also a bearing, a gear, a cutter connecting structure and the like, which makes the whole gravity center of the angle head generally not coincide with the axis of the transmission main shaft 3, and of course, the gravity center of the angle head is seen based on a certain section perpendicular to the axis of the transmission main shaft 3 in the embodiment, and the gravity center of the angle head can be obtained by using a hanging method and the like. The center of gravity of the angle head is arranged in the pressing triangle 71, so that relatively uniform force application is formed on the periphery of the center of gravity of the angle head based on the three axial pressing end faces 20, pressing supports of the axial pressing end faces 20 exist on two sides of each straight line passing through the center of gravity of the angle head, the angle head shell 2 can be ensured to be very stable and precise after being pressed on the main shaft shell 4, the occurrence of dead weight inclination of the angle head is completely eradicated, and radial runout of the angle head during working is avoided. The arrangement of the tool changing avoidance opening 7 may not affect the operation of the rotary tool changing arm 1, and this embodiment illustrates that the longest side of the pressing triangle 71 is used as the tool changing avoidance opening 7. Through the structure, the current situation that the radial runout is avoided by the axial precise connection and the angle head is replaced by matching with the rotary conversion cutter arm 1 of the solar horizontal machining center can be solved, and the solar horizontal machining center has extremely high popularization value. More preferably, the outer center of the pressing triangle 71 is arranged to coincide with the center of gravity of the angle head, so that the connection of the angle head housing 2 is more stable and precise.
Of course, the invention is not limited to this, and four axial pressing end surfaces 20 may be provided, one of the long sides at the tool changing avoidance port 7 is taken as one side, the other two axial pressing end surfaces 20 are respectively separate vertexes, the four axial pressing end surfaces 20 may form two pressing triangles 71, and the center of gravity of the angle head may be located in at least one of the pressing triangles 71. Of course, such a solution is considered to be within the scope of the invention, as long as the presence of a pressing triangle 71 of three of said axial pressing end faces 20 and the centre of gravity of said angular head being located within said pressing triangle 71 is satisfied.
The spindle housing 4 is provided with axial positioning end faces 40 corresponding to the axial pressing end faces 20 one by one, and in this embodiment, the angle head housing 2 is provided with three axial pressing end faces 20. In this embodiment, three axial pressing nails are fixedly disposed on the end face of the angle head housing 2, the end face of each axial pressing nail is the axial pressing end face 20, and three axial positioning nails are fixedly disposed on the corresponding spindle housing 4, and the end face of each axial positioning nail is the axial positioning end face 40.
The spindle housing 4 is provided with corner clamping cylinders 6 at the axial positioning end surfaces 40, and the angle head housing 2 is provided with clamping and pressing parts 29 corresponding to the piston rod ends of the corner clamping cylinders 6 one by one. In this embodiment, the corner clamping cylinder 6 is fixedly disposed on the outer peripheral surface of the spindle housing 4, and it is naturally preferable that the corner clamping cylinder 6 is disposed on the outer side of the corresponding axial positioning end surface 40 in the radial direction of the drive spindle 5. The corner clamping cylinder 6 is in the prior art, and is mainly formed by radially arranging a clamping claw at the end part of a piston rod, and the clamping claw can deflect at a certain angle after the piston rod extends out for a certain length, so that the clamping claw can press against the angle head shell 2. The corner clamping cylinder 6 in this embodiment may be an air cylinder or a hydraulic cylinder. The clamping and pressing part 29 is an annular pressing and pressing protrusion arranged on the outer circumferential surface of the angle head shell 2, a reversing valve is generally adopted in clamping control of the corner clamping cylinder 6, after the corner clamping cylinder 6 is controlled to extend and the clamping claw passes over the clamping and pressing part 29, the rotation angle of the clamping claw is controlled in a moment, and the clamping claw can be pressed on the clamping and pressing part 29; when the clamping jaw is retracted, the piston rod is controlled to extend out to enable the clamping jaw to be released from the pressing, and then the piston rod is controlled to retract slowly, so that the clamping jaw can be retracted after rotating the rotating angle. The structural principle of the corner clamping cylinder 6 is a known technology, and is not described herein.
A circumferential stable connecting device is arranged between the angle head shell 2 and the main shaft shell 4. The circumferential stable connection device comprises a circumferential positioning pin 21 arranged on the angle head shell 2 and a circumferential positioning hole 41 fixedly arranged on the main shaft shell 4 and corresponding to the circumferential positioning pin 21, and the circumferential positioning pin 21 is naturally located on the same side of the tool changing avoidance port 7 as the center of gravity of the angle head, so that the circumferential positioning pin 21 is convenient for not obstructing tool changing of the rotary tool changing arm 1. At least two elastic locking pin arc plates 42 are uniformly distributed in the circumferential positioning hole 41 along the circumferential direction of the inner wall of the circumferential positioning hole 41, a locking pin space is formed between at least two elastic locking pin arc plates 42, and a conical positioning part 22 capable of being inserted into the locking pin space is fixedly arranged at the end part of the circumferential positioning pin 21. In this embodiment, a latch cylinder made of spring steel is fixedly installed in the circumferential positioning hole 41, the outer end portion of the latch cylinder is grooved, and then the cylinder wall is formed into the elastic latch arc plates 42, and in this embodiment, four elastic latch arc plates 42 are illustrated. After the conical positioning portion 22 is inserted into the lock pin space, the conical positioning portion 22 may even further support the elastic lock pin arc plate 42 to be abutted against the inner wall of the circumferential positioning hole 41, so that elastic clamping contact can avoid occurrence of a gap, thereby avoiding shaking and facilitating stable circumferential positioning. In this embodiment, a circumferential positioning block is disposed on the spindle housing 4, and the circumferential positioning hole 41 is disposed on the circumferential positioning block.
The circumferential stable connection device further comprises a stop mounting hole arranged on the angle head shell 2, a circumferential stop pin 23 is slidably arranged in the stop mounting hole, and the circumferential stop pin 23 is naturally located on the same side of the tool changing avoidance port 7 as the center of gravity of the angle head. The spindle housing 4 is provided with a circumferential stop groove 43 arranged along the radial direction of the drive spindle 5, and the cross section of the circumferential stop groove 43 is arranged in an inverted conical shape. In this embodiment, a circumferential stop block is also fixedly mounted on the spindle housing 4, and the circumferential stop groove 43 is provided on the circumferential stop block. The outer end of the circumferential stop pin 23 is provided with a conical stop 24 cooperating with the circumferential stop groove 43, i.e. the longitudinal section of the conical stop 24 matches the inverted cone of the circumferential stop groove 43. It is of course preferred that the end diameter of the conical stop 24 is greater than the groove bottom width of the circumferential stop groove 43, so that the conical stop 24 is prevented from extending too far into the groove bottom of the circumferential stop groove 43, which would affect its precise connection.
An overhanging force-applying spring 25 is arranged between the circumferential stop pin 23 and the stop mounting hole, an overhanging limiting projection 27 is arranged on the circumferential stop pin 23, a projection chute 26 corresponding to the overhanging limiting projection 27 is arranged on the inner wall of the stop mounting hole, and an overhanging limiting end face is arranged on the side surface of the projection chute 26, which is close to the orifice of the stop mounting hole. The force provided by the overhanging force-applying spring 25 to drive the circumferential stop pin 23 to extend outwards can make the conical stop portion 24 clamped into the circumferential stop groove 43 more firmly, and due to the existence of spring force, the conical stop portion 24 can form effective contact with both sides of the circumferential stop groove 43, the conical stop portion 24 is connected with the circumferential stop groove 43 more reliably, and the elastic clamping with the elastic lock pin arc plate 42 can form complementary effects, so that axial quick and precise connection can be realized, and circumferential shaking of the angle head can be avoided.
In this embodiment, the transmission main shaft 3 is provided with a rotating clutch fin 31, and the protruding chute 26 is communicated with the stop mounting hole and the mounting hole of the transmission main shaft 3, which illustrates that the protruding chute 26 is radially arranged along the transmission main shaft 3. The rotating clutch fin 31 is provided with a transmission shaft clutch groove 32 located at the inner side of the overhanging limiting end face, and in this embodiment, the transmission shaft clutch groove 32 is a notch formed on the outer peripheral surface of the rotating clutch fin 31. The protruding limiting protrusion 27 protrudes out of the protrusion chute 26 and is provided with a transmission clutch protrusion 28 which can protrude into the transmission shaft clutch slot 32. When the angle head is not installed, the circumferential stop pin 23 keeps overhanging under the action of the overhanging force application spring 25, and the transmission clutch bulge 28 stretches outwards along with the circumferential stop pin 23 and is clamped into the transmission shaft clutch groove 32, so that the angle head shell 2 and the transmission main shaft 3 can synchronously rotate, and the relative fixation is realized. The cooperation of the transmission clutch protrusion 28 and the transmission shaft clutch groove 32 can play a role in positioning the central connecting device, the axial pressing end face 20 and the circumferential stable connecting device in the circumferential direction, so that the integral rapid assembly of the angle head is facilitated. When the angle head is assembled, the central connecting device, the axial pressing end surface 20, the circumferential positioning pin 21 and the circumferential stop pin 23 are assembled in a matched mode, the conical stop part 24 is pressed by the circumferential stop groove 43 after being assembled with the circumferential stop groove 43, the circumferential stop pin 23 is retracted, the transmission clutch protrusion 28 is retracted from the transmission shaft clutch groove 32, the transmission main shaft 3 and the angle head shell 2 can rotate relatively, so that the angle head shell 2 is precisely connected, and the transmission main shaft 3 can follow the driving main shaft 5 to perform machining operation, thereby achieving two purposes. In this embodiment, the width of the clutch groove 32 of the transmission shaft is equal to that of the protruding chute 26, and the clutch protrusion 28 of the transmission also serves as the protruding limit protrusion 27 protruding from the end of the protruding chute 26.
In the invention, when the angle head is assembled, the rotary tool changing arm 1 grabs the angle head from the tool changing avoidance opening 7, of course, a grabbing connecting part corresponding to the rotary tool changing arm 1 is arranged on the conventional angle head shell 2 or the transmission main shaft 3, the rotary tool changing arm 1 rotates the grabbed angle head to the main shaft shell 4 and axially inserts the grabbed angle head into the main shaft shell 4, the transmission main shaft 3 is gradually matched with the driving main shaft 5, the circumferential stop pin 23 is inserted into the circumferential stop groove 43 for circumferential stop, the circumferential positioning pin 21 is inserted into the circumferential positioning hole 41 for elastic clamping and positioning, the axial pressing end surface 20 is abutted against the corresponding axial positioning end surface 40, and the circumferential precision connection of the angle head is realized; the corner clamping cylinder 6 extends out, and the clamping pressing part 29 is used for applying force to the angle head housing 2 to the spindle housing 4 to form clamping, the axial pressing end surface 20 and the corresponding axial positioning end surface 40 can be tightly abutted, and the angle head is axially and precisely connected. The clamping of the corner clamping cylinder 6 enables the axial pressing end face 20 to be in tight abutting fit with the axial positioning end face 40, and the gravity center of the angle head is located in the pressing triangle 71, so that the angle head can be firmly and quickly connected in the axial direction, and radial runout caused by the fact that the angle head generates axis deflection due to dead weight is avoided. The tool changing avoidance port 7 can facilitate tool changing by rotating the tool changing arm 1, and the circumferential connection stability can be quickly completed by matching the circumferential positioning pin 21 with the circumferential stop pin 23, so that the circumference Xiang Huangdong of the angle head is avoided. The invention has the advantages of convenient disassembly and assembly, quick and accurate positioning and high connection precision, is a breakthrough technology for connecting the angle heads of the existing solar horizontal machining center, and has extremely high popularization value.
The foregoing has shown and described the basic principles, main features and advantages of the present invention. 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 (4)
1. The utility model provides a horizontal machining center is with angle head high accuracy connection structure, installs the drive main shaft in the spindle housing and rotate the transmission main shaft of installing in the angle head housing including rotating, the transmission main shaft with be equipped with central connecting device between the drive main shaft, its characterized in that: the angle head shell is provided with three axial pressing end faces, wherein a tool changing avoiding opening is arranged between two adjacent axial pressing end faces, the centers of the three axial pressing end faces enclose a pressing triangle, and the gravity center of the angle head is positioned in the pressing triangle; the main shaft shell is provided with axial positioning end faces in one-to-one correspondence with the axial pressing end faces, corner clamping cylinders are respectively arranged on the main shaft shell at the axial positioning end faces, and clamping pressing parts in one-to-one correspondence with the piston rod ends of the corner clamping cylinders are arranged on the angle head shell; a circumferential stable connecting device is arranged between the angle head shell and the main shaft shell;
the outer center of the pressing triangle is overlapped with the gravity center of the angle head;
The circumferential stable connecting device comprises a circumferential locating pin arranged on the angle head shell and a circumferential locating hole fixedly arranged on the spindle shell and corresponding to the circumferential locating pin, at least two elastic locking pin arc plates are circumferentially and uniformly distributed in the circumferential locating hole along the inner wall of the circumferential locating hole, a locking pin space is formed between at least two elastic locking pin arc plates, and a conical locating part capable of being inserted into the locking pin space is fixedly arranged at the end part of the circumferential locating pin.
2. The angle head high-precision connection structure for a horizontal machining center according to claim 1, wherein: the circumferential stable connecting device further comprises a stop mounting hole arranged on the angle head shell, a circumferential stop pin is slidably arranged in the stop mounting hole, a circumferential stop groove which is radially arranged along the driving main shaft is formed in the main shaft shell, and the cross section of the circumferential stop groove is in an inverted conical shape; the outer end part of the circumferential stop pin is provided with a conical stop part matched with the circumferential stop groove; an overhanging force application spring is arranged between the circumferential stop pin and the stop mounting hole, an overhanging limiting protrusion is arranged on the circumferential stop pin, a protruding chute corresponding to the overhanging limiting protrusion is arranged on the inner wall of the stop mounting hole, and an overhanging limiting end face is arranged on the side surface of the protruding chute, which is close to the orifice of the stop mounting hole.
3. The angle head high-precision connection structure for a horizontal machining center according to claim 2, wherein: the transmission main shaft is provided with a rotating clutch fin, the protruding chute is communicated with the stop mounting hole and the mounting hole of the transmission main shaft, the rotating clutch fin is provided with a transmission shaft clutch groove positioned on the inner side of the overhanging limiting end face, and the overhanging limiting protrusion extends out of the protruding chute to be provided with a transmission clutch protrusion which can extend into the transmission shaft clutch groove.
4. The angle head high-precision connection structure for a horizontal machining center as set forth in claim 1, 2 or 3, wherein: the center connecting device comprises a center connecting cylinder arranged at the end part of the transmission main shaft, a center sleeve corresponding to the center connecting cylinder is arranged on the driving main shaft, and a rotation connecting pin and/or a rotation connecting key are arranged between the transmission main shaft and the driving main shaft.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910432912.9A CN110039094B (en) | 2019-05-23 | 2019-05-23 | Angle head high-precision connecting structure for horizontal machining center |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910432912.9A CN110039094B (en) | 2019-05-23 | 2019-05-23 | Angle head high-precision connecting structure for horizontal machining center |
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| Publication Number | Publication Date |
|---|---|
| CN110039094A CN110039094A (en) | 2019-07-23 |
| CN110039094B true CN110039094B (en) | 2024-05-24 |
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| CN201910432912.9A Active CN110039094B (en) | 2019-05-23 | 2019-05-23 | Angle head high-precision connecting structure for horizontal machining center |
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| CN111250738B (en) * | 2020-03-30 | 2024-06-11 | 北京博鲁斯潘精密机床有限公司 | High-rigidity high-precision numerical control machine tool spindle connection structure |
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| CN207288907U (en) * | 2017-10-13 | 2018-05-01 | 徐金现 | The automatic lathe processing equipment of luggage rivet |
| CN210080804U (en) * | 2019-05-23 | 2020-02-18 | 江苏卓联精密机械有限公司 | Angle head high-precision connecting structure for horizontal machining center |
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| CN110039094A (en) | 2019-07-23 |
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