CN115815677B - Multi-angle processing milling head for machine tool processing center - Google Patents
Multi-angle processing milling head for machine tool processing center Download PDFInfo
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- CN115815677B CN115815677B CN202310069960.2A CN202310069960A CN115815677B CN 115815677 B CN115815677 B CN 115815677B CN 202310069960 A CN202310069960 A CN 202310069960A CN 115815677 B CN115815677 B CN 115815677B
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Abstract
The invention discloses a multi-angle milling head for a machine tool machining center, which relates to the technical field of machine tool machining centers.
Description
Technical Field
The invention relates to the technical field of machine tool machining centers, in particular to a multi-angle machining milling head for a machine tool machining center.
Background
To the cutter head in the machining center explanation, the cutter head is the main structure of centre gripping cutter, selects corresponding tool bit in the machining center tool magazine according to the product processing demand, if: the milling head comprises a bull nose milling cutter, a perforating drill, an external surface broach and the like, wherein the manipulator is used for conveying the manipulator to the lower side of the milling head to execute a cutter replacement command, and when different cutters execute corresponding milling actions, the angles between the cutters and the products are required to be switched according to the shapes of the products, so that the purpose of multi-angle milling is achieved, and the square ram universal side milling head can be referred to as CN 104551811B.
The cutter is required to cooperate with the execution of angle switching while the milling action is executed, and when the rotation and the angle switching of the cutter are performed in the same step, the force (mechanical vibration) generated in the rotation and milling of the cutter can influence the angle switching process of the cutter, so that the actual deviation angle of the cutter is different from the preset deviation angle, and the deviation occurs in the processing of the product.
In addition, the cutter which is positioned inside the milling head and is clamped and fixed can be subjected to the reaction force generated in the milling product of the cutter on the premise of being subjected to the outside clamping force, the direction of the reaction force changes along with the change of the angle of the cutter, the mechanical abrasion between the cutter and the milling head can be aggravated in the process, the problem that the cutter is clamped and cannot be taken off and replaced is more easily caused, the problem that the cutter is fixed unstably is even caused, and the potential safety hazard that the cutter falls off to hurt people is caused.
The present application proposes a solution to the above technical problem.
Disclosure of Invention
The invention aims to provide a multi-angle milling head for a machine tool machining center, which is used for solving the problems that when a current cutter synchronously performs two actions of milling and cutter angle switching, the cutter angle switching process is influenced by force generated when the cutter rotates and mills a product, so that deviation occurs in product machining, mechanical abrasion between the cutter and the milling head is aggravated when multi-angle machining is performed, and clamping or unstable cutter fixing occurs.
The aim of the invention can be achieved by the following technical scheme: the multi-angle milling head for the machine tool machining center comprises a mounting sleeve, wherein a rotating part connecting end is mounted on one side of the outer wall of the mounting sleeve, a main shaft assembly is arranged in the axial direction inside the mounting sleeve, a clamping sleeve is arranged at the lower end of the main shaft assembly, and a cutter body is arranged on the clamping sleeve;
the main shaft assembly comprises a lower shaft rod and an upper shaft rod which are arranged from bottom to top, a lower connecting disc is arranged at the bottom end of the lower shaft rod, a driving structure is arranged in the installation sleeve corresponding to the middle section position of the lower shaft rod and the middle section position of the upper shaft rod, an upper positioning sleeve is arranged at the upper end position in the installation sleeve, the upper shaft rod penetrates upwards to the upper end center point position of the upper positioning sleeve, a positioning block is arranged at the top end of the upper shaft rod, and the positioning block is in rotary connection with the upper positioning sleeve and the installation sleeve;
the upper shaft rod is arranged on the inner part of the movable ball bin, and two connecting rings are symmetrically arranged along the horizontal plane of the center point of the movable ball bin;
the middle section position and the bottom end position of the main shaft assembly are provided with assembly protection structures;
a plurality of movable curved bars are rotatably arranged on the two connecting rings, the movable curved bars are arranged in an annular array along the center point of the movable ball bin, and the tail ends of the movable curved bars are provided with magnetic balls;
the movable ball bin is characterized in that a limiting supporting piece which is horizontally arranged is arranged on the inner wall of the movable ball bin corresponding to the connecting ring, a plurality of magnetic suction ports are formed in the position, close to the outer surface of the magnetic ball, of the limiting supporting piece, and the magnetic suction ports are matched with the magnetic ball.
Further provided is that: the driving structure comprises a first bevel gear, a second bevel gear, a third bevel gear, a fourth bevel gear and a driving motor, wherein the first bevel gear and the fourth bevel gear are respectively arranged on an upper shaft rod and a lower shaft rod, the third bevel gear is arranged at the output end of the driving motor, the third bevel gear and the second bevel gear are positioned at two sides of the spindle assembly, the first bevel gear, the fourth bevel gear are meshed with the second bevel gear and the third bevel gear, and the second bevel gear is rotationally connected at one side of the inner wall of the mounting sleeve.
Further provided is that: the center points of the first bevel gear, the fourth bevel gear and the main shaft assembly are positioned on the same vertical axis, and the center points of the output ends of the second bevel gear, the third bevel gear and the driving motor are positioned on the same horizontal axis.
Further provided is that: the part of the assembly protection structure, which is positioned at the middle section of the main shaft assembly, is provided with a primary protection structure, and the position of the assembly protection structure, which is positioned at the bottom end of the main shaft assembly, is provided with a secondary protection structure;
the primary protection structure comprises a connecting sleeve, the connecting sleeve is positioned at the joint position of the upper shaft rod and the lower shaft rod, four top position columns are arranged on the outer wall of the connecting sleeve, the four top position columns are arranged in an annular array along the center point of the connecting sleeve, two top position columns are in rotary connection with the inner wall of the mounting sleeve, the other two top position columns are respectively in rotary connection with the center point positions of the second bevel gear and the third bevel gear, and the top position columns are in rotary connection with the connecting sleeve;
the secondary protection structure comprises a fastening ring and four locking sleeve plates, wherein the four locking sleeve plates are arranged in an annular array along the center point of the clamp sleeve, the fastening ring is positioned at the middle position of the locking sleeve plate and the mounting sleeve, and the fastening ring and the locking sleeve plates are positioned at the lower side of the lower connecting disc.
Further provided is that: the central points of the upper surfaces of the four locking sleeve plates are provided with upper sliding blocks, the locking sleeve plates are in sliding connection with the lower surfaces of the lower connecting discs through the upper sliding blocks, the outer curved surfaces of the locking sleeve plates are inclined, and the inner curved surfaces of the fastening rings are matched with the outer curved surfaces of the locking sleeve plates;
four connecting blocks are arranged at the outer curved surface position of the fastening ring, the four connecting blocks are arranged in an annular array along the center point of the chuck sleeve, the connecting blocks extend to the outer side position of the outer wall of the mounting sleeve, through grooves matched with the connecting blocks are formed in the mounting sleeve, a cylinder expansion joint sleeve corresponding to the connecting blocks is arranged at the lower end position of the outer wall of the mounting sleeve, and a transmission rod of the cylinder expansion joint sleeve is connected with the connecting blocks.
Further provided is that: and a plurality of side position balls are arranged on the outer curved surface positions of the four locking sleeve plates.
Further provided is that: the upper inserting piece and the top position block are respectively arranged on the inner curved surface of the locking sleeve plate along the direction from top to bottom, and the outer curved surface of the chuck sleeve is provided with a positioning slot and a positioning slot matched with the upper inserting piece and the top position block.
Further provided is that: the middle end position of the inner curved surface of the locking sleeve plate is provided with a side arc piece which is in a bent arch shape along the direction close to the clamp sleeve, and a plurality of top protrusions are embedded on the side arc piece.
Further provided is that: the upper shaft rod is provided with an air tap sleeve at the top end, the air tap sleeve is movably connected with the positioning block, and the air tap sleeve is communicated with the inner parts of the upper shaft rod, the lower shaft rod and the lower connecting disc.
The invention has the following beneficial effects:
the main shaft component in the milling head is arranged into an upper shaft rod and a lower shaft rod, the upper shaft rod does not interfere with the transmission process of the lower shaft rod, the lower shaft rod can drive the upper shaft rod to rotate in the opposite direction in a transmission mode of gear engagement, and the centrifugal force which is uniformly diffused outwards is generated by the upper shaft rod in the rotation process and is used for eliminating the influence of the non-directional external force generated when the cutter rotates and switches the feed angle on the cutter body, and the method is specifically characterized in that: when an unoriented external force acts on the cutter body, the movable curved rods at corresponding positions correspondingly move based on the unoriented external force, and the generated mechanical function belongs to idle work and does not interfere with the running state of the whole cutter body until the unoriented external force is consumed, and each movable curved rod returns to the stable running state again to promote the whole main shaft assembly to be in the relatively stable running state;
when the clamp sleeve is automatically assembled, a step-by-step tool unloading mode is adopted, in the automatic tool releasing process, the clamp sleeve loses the clamping force from the locking sleeve plate, and under the multistage cooperation of the corresponding upper inserting sheet, side arc sheet and top position block, the clamp sleeve is not directly separated from the connecting disc, but gradually separated from the connecting disc at a low speed through the upper inserting sheet, the side arc sheet and the top position block, and the aim is to avoid the problem that the clamp sleeve is directly separated to cause collision between the cutter body and a workpiece to be processed.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings that are required in the embodiments or the description of the prior art will be briefly described, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.
FIG. 1 is a schematic diagram of a multi-angle milling head for a machining center of a machine tool according to the present invention;
FIG. 2 is a cross-sectional view of a mounting sleeve member in a multi-angle milling head for a machining center of a machine tool according to the present invention;
FIG. 3 is a cross-sectional view of an upper positioning sleeve component in a multi-angle milling head for a machining center of a machine tool;
FIG. 4 is a split view of FIG. 3 in a multi-angle milling head for a machining center according to the present invention;
FIG. 5 is a schematic view of the structure of the joint sleeve member in the multi-angle milling head for a machining center of the present invention;
FIG. 6 is a schematic view of the structure of a fastening ring member in a multi-angle milling head for a machining center of a machine tool according to the present invention;
FIG. 7 is a cross-sectional view of a fastening ring member in a multi-angle milling head for a machining center of a machine tool according to the present invention;
FIG. 8 is a schematic view of the structure of a chuck sleeve component in a multi-angle milling head for a machining center of a machine tool;
FIG. 9 is a schematic view of a structure of a locking sleeve plate component in a multi-angle milling head for a machining center of a machine tool;
fig. 10 is a cross-sectional view of a lock sleeve plate member in a multi-angle milling head for a machining center of a machine tool according to the present invention.
In the figure: 1. a mounting sleeve; 2. a rotating part connecting end; 3. a cylinder expansion joint sleeve; 4. a nip sleeve; 401. positioning the slot; 402. a positioning slot; 5. a cutter body; 6. an upper positioning sleeve; 7. a first bevel gear; 8. a second bevel gear; 9. a third bevel gear; 10. a fourth bevel gear; 11. a connecting sleeve; 12. a driving motor; 13. a lower connecting disc; 14. a connecting block; 15. a fastening ring; 16. a positioning block; 17. an air tap sleeve; 18. a movable ball bin; 19. an upper shaft lever; 20. limiting support pieces; 21. a magnetic suction port; 22. a movable curved bar; 23. a magnetic ball; 24. a connecting ring; 25. a lower shaft lever; 26. a top column; 27. a locking sleeve plate; 2701. an upper slider; 2702. side position ball; 2703. an upper inserting sheet; 2704. a top protrusion; 2705. a side arc piece; 2706. and a top block.
Detailed Description
The technical solutions of the present invention will be clearly and completely described in connection with the embodiments, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
Example 1.
The cutter is used for executing milling actions, meanwhile, the cutter is also required to be matched with the execution of angle switching, namely, the feed angle of the cutter is switched, when the cutter rotates and the angle switching are operated in the same step, the vibration external force (mechanical vibration) generated in the cutter rotating and milling product can influence the cutter angle switching process, so that the actual deviation angle of the cutter is different from the preset deviation angle, the product processing is deviated, and the generated vibration external force aggravates the loss of the cutter body, therefore, the following technical scheme is provided:
referring to fig. 1 to 10, the multi-angle milling head for a machining center of a machine tool in this embodiment includes a mounting sleeve 1, a rotating part connecting end 2 is mounted on one side of an outer wall of the mounting sleeve 1, a spindle assembly is disposed in an inner axis direction of the mounting sleeve 1, a chuck sleeve 4 is disposed at a lower end of the spindle assembly, and a tool body 5 is disposed on the chuck sleeve 4;
the main shaft assembly comprises a lower shaft lever 25 and an upper shaft lever 19 which are arranged from bottom to top, a lower connecting disc 13 is arranged at the bottom end of the lower shaft lever 25, a driving structure is arranged in the installation sleeve 1 and corresponds to the middle section position of the lower shaft lever 25 and the upper shaft lever 19, an upper positioning sleeve 6 is arranged at the upper end position in the installation sleeve 1, the upper shaft lever 19 penetrates upwards to the upper end center point position of the upper positioning sleeve 6, a positioning block 16 is arranged at the top end of the upper shaft lever 19, and the positioning block 16 is in rotary connection with the upper positioning sleeve 6 and the installation sleeve 1;
the upper positioning sleeve 6 is internally provided with a movable ball bin 18, the part of the upper shaft lever 19 positioned in the movable ball bin 18 is provided with two connecting rings 24, and the two connecting rings 24 are symmetrically arranged along the horizontal plane of the center point of the movable ball bin 18;
the middle section position and the bottom end position of the main shaft assembly are provided with assembly protection structures;
a plurality of movable curved bars 22 are rotatably arranged on the two connecting rings 24, the movable curved bars 22 are arranged in an annular array along the center point of the movable ball bin 18, and the tail ends of the movable curved bars 22 are provided with magnetic balls 23;
the inner wall of the movable ball bin 18 corresponding to the connecting ring 24 is provided with a limit supporting piece 20 which is horizontally arranged, the outer surface of the limit supporting piece 20 close to the magnetic ball 23 is provided with a plurality of magnetic suction ports 21, and the magnetic suction ports 21 are matched with the magnetic ball 23.
Working principle: the whole structure is that the connecting end 2 of the rotating part is used as a connecting position to be arranged on the machining center of the machine tool, and the driving part on the machining center of the machine tool can drive the whole milling head structure to rotate at multiple angles, and the description is omitted here;
when the milling action is executed, the main shaft assembly is driven by the driving structure to rotate at high speed, the cutter body 5 is driven to rotate, and the cutter body 5 in the rotating process feeds according to a preset machining program of the machining center to mill a workpiece to be machined;
it should be noted that: when the spindle assembly rotates, the upper shaft rod 19 in the spindle assembly rotates along with the rotation, so that the movable curved rods 22 can be driven to synchronously rotate, and the synchronous rotation process is subdivided into the following parts:
in the initial state, each movable bent lever 22 is adsorbed on the position of the magnetic suction port 21 on the limit bracket 20 through the magnetic ball 23;
after the upper shaft rod 19 rotates at a high speed, a plurality of movable curved rods 22 synchronously rotate to generate a centrifugal force with a certain value, the centrifugal force is in direct proportion to the rotation speed of the upper shaft rod 19, then under the action of the centrifugal force, the magnetic force between the magnetic ball 23 and the magnetic suction port 21 is overcome slowly, the movable curved rods 22 positioned at the upper side part incline upwards in the rotation process, the rotation force is diffused outwards in a multi-angle uniform manner in the movable ball bin 18, and the uniformly diffused centrifugal force plays a role in stabilizing the upper shaft rod 19;
when the cutter body 5 rotates at a high speed and the feed angle is switched, the non-directional external force is generated on the cutter body 5, and is transmitted to the main shaft assembly and also indirectly transmitted to the movable curved rod 22, the movable curved rod 22 performs appropriate movement by taking the non-directional external force as the 'source power', and does no mechanical work, and at the moment, the inside of the movable ball bin 18 is in an uncoordinated movement state and is used for 'consuming' the non-directional external force until the non-directional external force is 'consumed', and the movable curved rods 22 are restored to a stable running state again.
In combination with the above, the centrifugal force is used for applying stable and uniform external force to the spindle assembly, so that the spindle assembly is ensured to always maintain a relatively stable state in the high-speed rotation process, and the direct loss of the spindle assembly caused by the non-directional external force is avoided.
Example 2.
This embodiment is a further optimization of the spindle assembly structure in embodiment one:
the driving structure comprises a first bevel gear 7, a second bevel gear 8, a third bevel gear 9, a fourth bevel gear 10 and a driving motor 12, wherein the first bevel gear 7 and the fourth bevel gear 10 are respectively arranged on an upper shaft rod 19 and a lower shaft rod 25, the third bevel gear 9 is arranged on the output end of the driving motor 12, the third bevel gear 9 and the second bevel gear 8 are positioned on two sides of a main shaft assembly, the first bevel gear 7, the fourth bevel gear 10 are meshed with the second bevel gear 8 and the third bevel gear 9, the second bevel gear 8 is rotatably connected on one side of the inner wall of the mounting sleeve 1, the central points of the first bevel gear 7, the fourth bevel gear 10 and the main shaft assembly are positioned on the same vertical axis, and the central points of the output ends of the second bevel gear 8, the third bevel gear 9 and the driving motor 12 are positioned on the same horizontal axis.
Referring to fig. 2, the third bevel gear 9 is driven by the driving motor 12 to rotate, and carries the first bevel gear 7 and the fourth bevel gear 10 to rotate in opposite directions, and the rotation directions of the upper shaft lever 19 and the lower shaft lever 25 are opposite, so that the following operation process is formed: the upper shaft 19 does not interfere with the rotation process of the lower shaft 25, but is appropriately rotated by the lower shaft 25, so that the operation state of the movable crank 22 in the first embodiment is separated from the lower shaft 25, and the purpose thereof is that: the upper shaft 19 is only "receptive" to the non-directional external forces of the spindle assembly, reducing the impact of the non-directional external forces on the lower shaft 25.
Example 3.
The present embodiment is directed to a cutter assembly process of the milling head, and locally optimizes the transmission mode in the second embodiment, and specifically includes the following steps:
in the assembly protection structure of the multi-angle milling head for the machine tool machining center, the part of the assembly protection structure, which is positioned at the middle section of the main shaft assembly, is set as a primary protection structure, and the position of the assembly protection structure, which is positioned at the bottom end of the main shaft assembly, is set as a secondary protection structure;
the primary protection structure comprises a connecting sleeve 11, the connecting sleeve 11 is positioned at the joint position of an upper shaft lever 19 and a lower shaft lever 25, four top position columns 26 are arranged on the outer wall position of the connecting sleeve 11, the four top position columns 26 are arranged in an annular array along the center point of the connecting sleeve 11, two top position columns 26 are in rotary connection with the inner wall of the mounting sleeve 1, the other two top position columns 26 are respectively in rotary connection with the center point positions of a second bevel gear 8 and a third bevel gear 9, and the top position columns 26 are in rotary connection with the connecting sleeve 11;
the secondary protection structure comprises a fastening ring 15 and four locking sleeve plates 27, the four locking sleeve plates 27 are arranged in an annular array along the center point of the chuck sleeve 4, the fastening ring 15 is positioned at the middle position of the locking sleeve plates 27 and the mounting sleeve 1, and the fastening ring 15 and the locking sleeve plates 27 are positioned at the lower side position of the lower connecting disc 13.
The central points of the upper surfaces of the four locking sleeve plates 27 are provided with upper sliding blocks 2701, the locking sleeve plates 27 are in sliding connection on the lower surface of the lower connecting disc 13 through the upper sliding blocks 2701, the outer curved surfaces of the locking sleeve plates 27 are inclined, and the inner curved surfaces of the fastening rings 15 are matched with the outer curved surfaces of the locking sleeve plates 27;
four connecting blocks 14 are arranged at the outer curved surface position of the fastening ring 15, the four connecting blocks 14 are arranged in an annular array along the center point of the chuck sleeve 4, the connecting blocks 14 extend to the outer side position of the outer wall of the mounting sleeve 1, through grooves matched with the connecting blocks 14 are formed in the mounting sleeve 1, the cylinder expansion joint sleeve 3 corresponding to the connecting blocks 14 is arranged at the lower end position of the outer wall of the mounting sleeve 1, a transmission rod of the cylinder expansion joint sleeve 3 is connected with the connecting blocks 14, and a plurality of side balls 2702 are arranged at the outer curved surface position of the four locking sleeve plates 27.
Working principle: the engagement sleeve 11 is used for stabilizing the upper shaft lever 19 and the lower shaft lever 25, does not participate in the rotation process of the main shaft assembly, is reinforced by the four top position posts 26, and does not interfere with the rotation process of the second bevel gear 8 and the third bevel gear 9;
for the clamping process of the collet sleeve 4, the following explanation is made here:
in the tool magazine in the machining center of the machine tool, each tool body 5 is mounted in the collet sleeve 4, the purpose of this way is to facilitate the automatic tool changing process to select and grasp the corresponding kind of tool body 5 by directly gripping the collet sleeve 4, this way belongs to the common means in the current machining center tool magazine, such as grasping the collet sleeve 4 with a mechanical arm, which will not be described in detail here;
after the collet sleeve 4 is put into the lower side position of the lower connecting disc 13 together with the cutter body 5, the fastening ring 15 is moved downwards by activating the cylinder expansion joint sleeve 3, so that the four locking sleeve plates 27 are pushed to approach the collet sleeve 4 until the four locking sleeve plates 27 completely clamp the collet sleeve 4.
In the above process, the side balls 2702 provided outside the locking sleeve plate 27 are used to reduce the stress area between the fastening ring 15 and the locking sleeve plate 27, and the fastening ring 15 does not interfere with the rotation process of the locking sleeve plate 27 on the premise that the fastening ring 15 can clamp the locking sleeve plate 27.
Example 4.
In the automatic tool changing process, the corresponding types of tools are selected from a tool magazine of a machine tool machining center by using an automatic mechanical arm at present to better assemble the tools, and in the tool changing process, after the clamping force of a locking sleeve plate is lost by a clamping sleeve on a milling head, the clamping sleeve is directly separated from the milling head and collides with a workpiece to be machined, so that the workpiece or the tools are lost, and the following technical scheme is provided:
an upper inserting sheet 2703 and a top position block 2706 are respectively arranged on the inner curved surface position of the locking position sleeve plate 27 along the direction from top to bottom, a positioning slot 401 and a positioning slot 402 which are matched with the upper inserting sheet 2703 and the top position block 2706 are arranged on the outer curved surface of the chuck sleeve 4, a side arc sheet 2705 is arranged on the middle end position of the inner curved surface of the locking position sleeve plate 27, the side arc sheet 2705 is in a curved arch shape along the direction close to the chuck sleeve 4, a plurality of top position bulges 2704 are inlaid on the side arc sheet 2705, an air nozzle sleeve 17 is arranged on the top end position of the upper shaft rod 19, the air nozzle sleeve 17 is movably connected with the positioning block 16, and the air nozzle sleeve 17 is communicated with the inner parts of the upper shaft rod 19, the lower shaft rod 25 and the lower connecting disc 13.
As shown in the third embodiment, when the locking sleeve plate 27 approaches to the collet sleeve 4, the corresponding upper insert pieces 2703 and top position blocks 2706 are inserted into the positioning slots 401 and the positioning slots 402 in the collet sleeve 4, so as to further strengthen the clamping process between the locking sleeve plate 27 and the collet sleeve 4;
it should be noted that, in the automatic tool changing process, the cylinder expansion joint sleeve 3 drives the fastening ring 15 to move upwards to the initial position, at this time, the clamping sleeve 4 loses the clamping force from the locking sleeve plate 27, in this state, the side arc pieces 2705 are still in a bent state, the top protrusion 2704 is used to press the outer surface of the clamping sleeve 4, the clamping sleeve 4 is subjected to the pressure provided by the top protrusion 2704, so that the clamping sleeve 4 cannot be directly separated at the moment that the locking sleeve plate 27 is separated from the clamping sleeve 4, and the problem that the tool body 5 directly falls down to collide with a workpiece to be processed is avoided;
and in the above-mentioned process, can connect structures such as air pump on air cock cover 17, at automatic tool changing process, after the arm snatches a cutter in the tool magazine, and the arm also can grasp the chuck cover 4 of cutter head downside, air pump isotructure carries strong air current through air cock cover 17 this moment, along last axostylus axostyle 19-lower axostylus axostyle 25-lower connection pad 13 gradually acts on the upper end of chuck cover 4, the purpose of this mode is: pushing the collet sleeve 4 to disengage from the lower connecting disc 13 by the pressure of the air flow;
while the new tool body 5 is loaded as described in the description of 2) in the third embodiment.
To sum up: the main shaft component in the milling head is arranged into an upper shaft rod and a lower shaft rod, the upper shaft rod does not interfere with the transmission process of the lower shaft rod, the lower shaft rod can drive the upper shaft rod to rotate in the opposite direction in a transmission mode of gear engagement, and the centrifugal force which is uniformly diffused outwards is generated in the rotation process of the upper shaft rod and is used for eliminating the influence of the non-directional external force generated when the cutter rotates and switches the feed angle on the cutter body, and the method is specifically characterized in that: when an unoriented external force acts on the cutter body, the movable curved rods at corresponding positions correspondingly move based on the unoriented external force, and the generated mechanical function belongs to idle work and does not interfere with the running state of the whole cutter body until the unoriented external force is consumed, and each movable curved rod returns to the stable running state again to promote the whole main shaft assembly to be in the relatively stable running state.
The foregoing is merely illustrative and explanatory of the invention, as it is well within the scope of the invention as claimed, as it relates to various modifications, additions and substitutions for those skilled in the art, without departing from the inventive concept and without departing from the scope of the invention as defined in the accompanying claims.
In the description of the present specification, the descriptions of the terms "one embodiment," "example," "specific example," and the like, mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the present invention. In this specification, schematic representations of the above terms do not necessarily refer to the same embodiments or examples. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.
The preferred embodiments of the invention disclosed above are intended only to assist in the explanation of the invention. The preferred embodiments are not intended to be exhaustive or to limit the invention to the precise form disclosed. Obviously, many modifications and variations are possible in light of the above teaching. The embodiments were chosen and described in order to best explain the principles of the invention and the practical application, to thereby enable others skilled in the art to best understand and utilize the invention. The invention is limited only by the claims and the full scope and equivalents thereof.
Claims (9)
1. The multi-angle milling head for the machine tool machining center is characterized by comprising a mounting sleeve (1), wherein a rotating part connecting end (2) is mounted on one side of the outer wall of the mounting sleeve (1), a main shaft assembly is arranged in the inner axis direction of the mounting sleeve (1), a clamping sleeve (4) is arranged at the lower end of the main shaft assembly, and a cutter body (5) is arranged on the clamping sleeve (4);
the main shaft assembly comprises a lower shaft rod (25) and an upper shaft rod (19) which are arranged from bottom to top, a lower connecting disc (13) is arranged at the bottom end of the lower shaft rod (25), a driving structure is arranged in the installation sleeve (1) corresponding to the middle section position of the lower shaft rod (25) and the middle section position of the upper shaft rod (19), an upper locating sleeve (6) is arranged at the upper end position in the installation sleeve (1), the upper shaft rod (19) upwards penetrates through the upper end center point position of the upper locating sleeve (6), a locating block (16) is arranged at the top end of the upper shaft rod (19), and the locating block (16) is in rotary connection with the upper locating sleeve (6) and the installation sleeve (1);
the upper positioning sleeve (6) is internally provided with a movable ball bin (18), two connecting rings (24) are arranged on the inner part of the movable ball bin (18) of the upper shaft lever (19), and the two connecting rings (24) are symmetrically arranged along the horizontal plane of the center point of the movable ball bin (18);
the middle section position and the bottom end position of the main shaft assembly are provided with assembly protection structures;
a plurality of movable curved bars (22) are rotatably arranged on the two connecting rings (24), the movable curved bars (22) are arranged in an annular array along the center point of the movable ball bin (18), and the tail ends of the movable curved bars (22) are provided with magnetic balls (23);
the movable ball bin (18) is provided with a limiting support piece (20) which is horizontally arranged at the position corresponding to the inner wall of the connecting ring (24), the position, close to the outer surface of the magnetic ball (23), of the limiting support piece (20) is provided with a plurality of magnetic suction ports (21), and the magnetic suction ports (21) are matched with the magnetic ball (23).
2. The multi-angle milling head for a machining center of a machine tool according to claim 1, wherein the driving structure comprises a first bevel gear (7), a second bevel gear (8), a third bevel gear (9), a fourth bevel gear (10) and a driving motor (12), the first bevel gear (7) and the fourth bevel gear (10) are respectively mounted on an upper shaft lever (19) and a lower shaft lever (25), the third bevel gear (9) is mounted on the output end of the driving motor (12), the third bevel gear (9) and the second bevel gear (8) are positioned at two sides of the spindle assembly, the first bevel gear (7), the fourth bevel gear (10) are meshed with the second bevel gear (8) and the third bevel gear (9), and the second bevel gear (8) is rotatably connected at one side of the inner wall of the mounting sleeve (1).
3. The multi-angle milling head for a machining center of a machine tool according to claim 2, wherein the center points of the first bevel gear (7), the fourth bevel gear (10) and the spindle assembly are on the same vertical axis, and the center points of the output ends of the second bevel gear (8), the third bevel gear (9) and the driving motor (12) are on the same horizontal axis.
4. The multi-angle milling head for a machining center of a machine tool according to claim 1, wherein a portion of the assembly protection structure located at a middle section of the spindle assembly is provided as a primary protection structure, and a portion of the assembly protection structure located at a bottom end of the spindle assembly is provided as a secondary protection structure;
the primary protection structure comprises a connecting sleeve (11), the connecting sleeve (11) is positioned at the joint position of an upper shaft lever (19) and a lower shaft lever (25), four top position columns (26) are arranged on the outer wall position of the connecting sleeve (11), the four top position columns (26) are arranged in an annular array along the center point of the connecting sleeve (11), two top position columns (26) are in rotary connection with the inner wall of the mounting sleeve (1), the other two top position columns (26) are respectively in rotary connection with the center point positions of a second bevel gear (8) and a third bevel gear (9), and the top position columns (26) are in rotary connection with the connecting sleeve (11);
the secondary protection structure comprises a fastening ring (15) and four locking sleeve plates (27), the four locking sleeve plates (27) are arranged in an annular array along the center point position of the clamp sleeve (4), the fastening ring (15) is positioned at the middle position of the locking sleeve plates (27) and the mounting sleeve (1), and the fastening ring (15) and the locking sleeve plates (27) are positioned at the lower side position of the lower connecting disc (13).
5. The multi-angle milling head for the machine tool machining center according to claim 4, wherein upper sliding blocks (2701) are arranged at central points of the upper surfaces of the four locking sleeve plates (27), the locking sleeve plates (27) are in sliding connection on the lower surface of the lower connecting disc (13) through the upper sliding blocks (2701), the outer curved surfaces of the locking sleeve plates (27) are inclined, and the inner curved surfaces of the fastening rings (15) are matched with the outer curved surfaces of the locking sleeve plates (27);
four connecting blocks (14) are arranged at the outer curved surface position of the fastening ring (15), the four connecting blocks (14) are arranged in an annular array along the center point of the clamp sleeve (4), the connecting blocks (14) extend to the outer side position of the outer wall of the mounting sleeve (1), through grooves matched with the connecting blocks (14) are formed in the mounting sleeve (1), the cylinder expansion joint sleeve (3) corresponding to the connecting blocks (14) is arranged at the lower end position of the outer wall of the mounting sleeve (1), and a transmission rod of the cylinder expansion joint sleeve (3) is connected with the connecting blocks (14).
6. The multi-angle milling head for a machining center of a machine tool according to claim 4, wherein a plurality of side balls (2702) are provided at outer curved surface positions of four of the lock sleeve plates (27).
7. The multi-angle milling head for the machining center of claim 6, wherein an upper insert (2703) and a top block (2706) are respectively installed on the inner curved surface of the locking sleeve plate (27) along the direction from top to bottom, and a positioning slot (401) and a positioning slot (402) matched with the upper insert (2703) and the top block (2706) are formed on the outer curved surface of the clamp sleeve (4).
8. The multi-angle milling head for a machining center of a machine tool according to claim 7, wherein a side arc piece (2705) is mounted at a middle end position of the inner curved surface of the locking sleeve plate (27), the side arc piece (2705) is in a curved arch shape along a direction approaching to the clamp sleeve (4), and a plurality of top protrusions (2704) are inlaid on the side arc piece (2705).
9. The multi-angle milling head for the machine tool machining center according to claim 4, wherein an air tap sleeve (17) is arranged at the top end of the upper shaft rod (19), the air tap sleeve (17) is movably connected with the positioning block (16), and the air tap sleeve (17) is communicated with the inner parts of the upper shaft rod (19), the lower shaft rod (25) and the lower connecting disc (13).
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| CN202310069960.2A CN115815677B (en) | 2023-02-07 | 2023-02-07 | Multi-angle processing milling head for machine tool processing center |
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| CN202310069960.2A CN115815677B (en) | 2023-02-07 | 2023-02-07 | Multi-angle processing milling head for machine tool processing center |
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| JP5207272B2 (en) * | 2007-10-11 | 2013-06-12 | 明 杉山 | Spindle head for machine tools |
| CN104551811B (en) * | 2014-12-29 | 2017-01-25 | 宁波海天精工股份有限公司 | Universal side milling head for milling square rams |
| CN106826335B (en) * | 2017-03-29 | 2019-05-10 | 李威 | A kind of double link tool changing device |
| CN108213530A (en) * | 2018-01-15 | 2018-06-29 | 重庆科技学院 | Numerical control is adjustable universal side milling device |
| CN210160490U (en) * | 2019-05-24 | 2020-03-20 | 杭州叉车门架有限公司 | Milling head for numerical control machine tool |
| CN113199281B (en) * | 2021-05-19 | 2022-04-08 | 沈阳航空航天大学 | Ultrasonic milling, impacting and rolling three-cutter changeable clamp |
| CN114273706A (en) * | 2022-01-14 | 2022-04-05 | 南京宁庆数控机床制造有限公司 | Milling head clamping and rotating system and method for gantry machining center |
| CN114570954B (en) * | 2022-04-13 | 2022-11-22 | 意特利（滁州）智能数控科技有限公司 | Vertical-horizontal switching mechanism for electric spindle and numerical control machine tool |
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