CN115570418A - Skin milling operation pressfitting frock - Google Patents
Skin milling operation pressfitting frock Download PDFInfo
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- CN115570418A CN115570418A CN202211560387.7A CN202211560387A CN115570418A CN 115570418 A CN115570418 A CN 115570418A CN 202211560387 A CN202211560387 A CN 202211560387A CN 115570418 A CN115570418 A CN 115570418A
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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
- B23Q3/00—Devices holding, supporting, or positioning work or tools, of a kind normally removable from the machine
- B23Q3/02—Devices holding, supporting, or positioning work or tools, of a kind normally removable from the machine for mounting on a work-table, tool-slide, or analogous part
- B23Q3/06—Work-clamping means
- B23Q3/062—Work-clamping means adapted for holding workpieces having a special form or being made from a special material
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23C—MILLING
- B23C3/00—Milling particular work; Special milling operations; Machines therefor
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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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- Mechanical Engineering (AREA)
- Press Drives And Press Lines (AREA)
Abstract
The invention discloses a skin milling operation pressing tool which comprises a die body, wherein a molding platform is arranged on the die body, a skin is laid on the molding platform, a pressing plate is also laid on the end surface of the skin, a plurality of pressing assemblies are also arranged on the die body around the molding platform, each pressing assembly comprises a mounting seat and two pressing rods which are rotatably connected to the mounting seat, the two pressing rods are pressed on the pressing plate, a transmission assembly is also arranged on the mounting seat, and a driving assembly is arranged on a main shaft of a planing milling cutter. During milling, along with the fact that a main shaft of the milling cutter is continuously close to the pressing component, the driving component and the transmission component on the main shaft of the milling cutter can be in transmission fit, and the two pressing rods are sequentially lifted up and press the pressing plate again. During this period, the spindle of the planer milling cutter can be moved through the hold-down assembly in the feed path and feed speed of normal machining. The pressing tool provided by the invention can enable the skin to be milled by the planer milling cutter only according to the path of feeding around the pressing plate, so that the efficiency of the milling operation of the skin is improved.
Description
Technical Field
The invention relates to the technical field of tool fixtures, in particular to a skin milling operation pressing tool.
Background
The skin part is an external part of the airplane and is an important stressed component of the airplane. The skin part has complex appearance and high precision requirement. After general airplane skin workpieces are formed by stretching or roll bending, the cutting processing of the appearance is needed. The prior manufacturing process adopts a vacuum flexible adsorption device and is matched with a milling machine to process a skin workpiece. However, the vacuum flexible adsorption device can only carry out multi-point discrete supporting and clamping on the surface of the skin, and when a cutter carries out cutting processing on a suspended area between clamping points, particularly a thin skin, the skin inevitably vibrates, the milling speed and the notch flatness cannot be controlled, and the precision requirement cannot be met.
And chinese patent publication No. CN112475404A discloses a skin milling appearance tool, which comprises a die body, a pressing structure, a profiling steel bar and a pressing plate. Wherein, the end face of the die body is provided with a lug boss. When the pressure plate is used, the skin is laid on the boss, and the pressure plate is laid on the skin. And then, the pressing plate and the skin can be pressed on the boss through the pressing structure. During milling, the skin can be milled by the planer milling cutter feeding around the pressing plate. Under the matching of the die body and the compression structure, the problem of vibration in the processing process of the skin is effectively solved, so that the milling processing precision of the skin is improved. However, during the feed of the router bit, the pressure lever of the pressing structure can block the router bit. At this moment, the milling cutter needs to be withdrawn vertically or transversely and bypasses the compression bar to perform milling, so that time waste is caused, and the milling efficiency of the skin is reduced.
Disclosure of Invention
The invention aims to overcome the defects in the prior art and provides a skin milling operation pressing tool.
The purpose of the invention is realized by the following technical scheme:
the utility model provides a covering mills and cuts operation pressfitting frock, includes the die body, be provided with the type platform on the die body, the covering is laid the type bench, has still laid the clamp plate on the terminal surface of covering, the die body centers on the type platform still is provided with a plurality of subassemblies that compress tightly, compress tightly the subassembly can with clamp plate, covering compress tightly in the type platform, it includes the mount pad and rotates to connect to compress tightly the subassembly two depression bars on the mount pad, two the depression bar all compress tightly in the clamp plate, still be provided with transmission assembly on the mount pad, be provided with drive assembly on planing milling cutter's the main shaft, work as drive assembly process during the transmission assembly, transmission assembly with drive assembly transmission cooperation can drive and lean on the front the depression bar lifts up in order to compress tightly again through the main shaft the clamp plate, and then lean on the back the depression bar lifts up in order to compress tightly again through the main shaft the clamp plate.
Through the technical scheme, when milling, the driving assembly and the transmission assembly on the main shaft of the planing milling cutter can be in transmission fit with each other along with the fact that the main shaft of the planing milling cutter is continuously close to the pressing assembly, and the two pressing rods are sequentially lifted and press the pressing plate again. During this period, the spindle of the planer milling cutter can be moved through the hold-down assembly in the feed path and feed speed of normal machining. Compared with the prior art, the pressing assembly in the skin milling operation pressing tool can ensure that at least one pressing rod presses the pressing plate and the skin tightly, so that the planer milling cutter does not need to retract to bypass the pressing rod for milling, the planer milling cutter can mill the skin only according to a path of feeding around the pressing plate, and the efficiency of the skin milling operation is improved to the great extent.
Preferably, the drive assembly comprises a drive wheel.
Through above-mentioned technical scheme, dig the revolving force accessible drive wheel of milling cutter main shaft and carry out the transmission output. Therefore, the original power of the main shaft can be fully utilized as the driving force of the transmission assembly, and the energy loss is reduced.
Preferably, the transmission assembly comprises two sets of transmission units, two sets of transmission units correspond to the two pressing rods, and when the driving wheel passes through the transmission units, the transmission units are in transmission fit with the driving wheel and can drive the corresponding pressing rods to be lifted so as to press the pressing plate again through the main shaft.
Through the technical scheme, the two groups of transmission units respectively control the lifting and the pressing of the two pressing rods, so that the system complexity of the transmission assembly can be reduced, and the lifting and pressing actions of the pressing rods are easier to execute.
Preferably, the transmission unit comprises a lifting part and a pressing part which are sequentially arranged along the advancing direction of the main shaft, and when the driving wheel passes through the lifting part, the lifting part and the driving wheel are in transmission fit and can drive the corresponding pressure rod to lift; when the driving wheel passes through the pressing part, the pressing part is in transmission fit with the driving wheel and can drive the corresponding pressing rod to press the pressing plate again.
Through the technical scheme, the lifting part is in transmission fit with the driving wheel to control the pressing rod to lift, and the pressing part is in transmission fit with the driving wheel to control the pressing rod to press the pressing plate again. Therefore, the system complexity of the transmission unit is reduced, the lifting and pressing actions of the pressing rod are easier to execute and respond, and the use reliability of the pressing tool is improved.
Preferably, the lifting part comprises a first driving wheel which is rotatably connected to the mounting seat, a first bevel gear is coaxially arranged on the first driving wheel through a connecting shaft, a second bevel gear is coaxially arranged on a rotating shaft of the pressing rod, and the second bevel gear is meshed with the first bevel gear.
Through above-mentioned technical scheme, when the drive wheel through lift portion, the drive wheel can contact with drive wheel and take place the transmission. At the moment, the driving wheel rotates for a moment, so that the bevel gear I is driven by the connecting shaft to rotate, the rotating bevel gear drives the bevel gear II to rotate for a moment, and the pressing rod can perform and respond to the lifting action.
Preferably, the compressing portion is connected including rotating drive wheel two on the mount pad, drive wheel two is through the coaxial bevel gear three that is provided with of connecting axle, it is connected with bevel gear four still to rotate in the mount pad, bevel gear four mesh in bevel gear three, the coaxial straight-teeth gear one that is provided with in the axis of rotation of bevel gear four, the coaxial straight-teeth gear two that is provided with in the axis of rotation of depression bar, straight-teeth gear two mesh in straight-teeth gear one.
Through above-mentioned technical scheme, when the drive wheel passed through the portion that compresses tightly, the drive wheel can contact with drive wheel two and take place the transmission. At the moment, the second transmission wheel can rotate, so that the third bevel gear is driven by the connecting shaft to rotate, the third bevel gear drives the fourth bevel gear to rotate, the first straight gear also rotates, and the first straight gear drives the second straight gear to rotate. It can be understood that the compression rod can perform and respond to the compression action due to the reversing transmission of the first straight gear and the second straight gear.
Preferably, the end part of the pressure lever far away from the mounting seat extends downwards to be provided with an elastic block.
Through above-mentioned technical scheme, through extrusion elastic block, the depression bar can act on the stronger packing force of clamp plate.
Preferably, a pulley set is in transmission connection between the connecting shafts of the lifting portions and the connecting shafts of the pressing portions of different transmission units, the pulley set comprises two pulleys respectively connected to the two connecting shafts and a belt connected between the two pulleys, the belt comprises a driving section and a smooth section, the pulley set between the lifting portion of the front pressing rod and the pressing portion of the rear pressing rod is a first pulley set, and the pulley set between the pressing portion of the front pressing rod and the lifting portion of the rear pressing rod is a second pulley set;
in an initial state, two belt wheels in the first belt wheel set are opposite to the driving section, and when the driving wheel of the pressure lever close to the front rotates, the belt wheel close to the rear in the first belt wheel set can be opposite to the smooth section;
in an initial state, the belt wheel near the front in the second belt pulley set is opposite to the smooth section, the belt wheel near the rear in the second belt pulley set is opposite to the driving section, and when the driving wheel of the pressing rod near the rear rotates, the belt wheel near the front in the second belt pulley set can be opposite to the driving section.
Through the technical scheme, when the driving wheel contacts with the driving wheel of the front pressing rod to drive the pressing rod to lift, the corresponding belt wheel set can transmit, and the belt wheel of the pressing part of the pressing rod at the back can rotate, so that one of the two pressing rods is lifted, and the other pressing rod is continuously pressed in a use state. In the process, along with the transmission of the belt pulley group, the belt can rotate to a position state that the smooth section is opposite to the belt pulley of the pressing part of the rear pressing rod, so that when the driving wheel is in contact with the second driving wheel of the rear pressing rod to drive the pressing rod to press, the belt pulley group slips and does not generate transmission, and the situation that the front pressing rod is lifted up again is not easy to occur;
when the driving wheel contacts with the second driving wheel of the front pressure lever to drive the pressure lever to press tightly, the corresponding belt wheel is opposite to the smooth section, so that the corresponding belt wheel set slips and does not generate transmission. Furthermore, the front pressure lever can normally carry out the pressing action, and the rear pressure lever does not carry out transmission. When the driving wheel contacts with the driving wheel of the rear pressure lever to drive the pressure lever to lift, the corresponding belt wheel group can carry out transmission, and the belt wheel of the front pressure lever is opposite to the driving section. At the moment, the front pressure lever can continuously press the pressure plate, and the rear pressure lever can be normally lifted.
And it can be understood that when two compression rods are designed to be lifted, another advantage of continuous compression is as follows: when a certain pressure rod is lifted, a certain gap may be formed between the pressure plate and the skin and the moulding platform after the pressure plate and the skin lose the partial pressing force, and further the pressing effect of the pressing component on the skin is reduced. And at the moment, the pressing force of the pressing assembly on the pressing plate can be improved by controlling the other pressing rod to continuously press the pressing plate, so that the gap is eliminated to ensure the pressing effect of the pressing assembly on the skin.
Preferably, the diameter of the belt wheel on the connecting shaft of the lifting part is smaller than that of the belt wheel on the connecting shaft of the pressing part.
Through the technical scheme, when one of the two pressing rods is lifted and the other one of the two pressing rods is continuously pressed, the lifted pressing rod can have the capacity of being lifted greatly under the action of the transmission ratio of the belt wheel set so as to allow the main shaft to pass smoothly, and the pressed pressing rod has the capacity of continuously pressing the pressing plate with small amplitude. The structural rationality of the pressing tool is improved.
Preferably, the elastic block is detachably connected with the pressure lever.
Through the technical scheme, the tool can be suitable for clamping skins with different thicknesses by replacing the elastic blocks with different thicknesses.
Drawings
FIG. 1 is a schematic structural diagram of an embodiment;
FIG. 2 is a schematic view of a hold-down assembly;
FIG. 3 is an enlarged view of portion A of FIG. 2;
FIG. 4 is a schematic cross-sectional structural view of the hold-down assembly;
FIG. 5 is an enlarged view of the portion B of FIG. 4;
FIG. 6 is a schematic structural diagram of a first spur gear and a second spur gear;
fig. 7 is a schematic structural view of a pulley set.
Reference numerals: 1. a mold body; 2. a mould stage; 3. pressing a plate; 4. a compression assembly; 5. a mounting seat; 6. a pressure lever; 7. a transmission assembly; 8. a drive assembly; 9. a drive wheel; 10. a transmission unit; 11. a lifting part; 12. a pressing part; 13. a first transmission wheel; 14. a first bevel gear; 15. a second bevel gear; 16. a second driving wheel; 17. a third bevel gear; 18. a fourth bevel gear; 19. a first straight gear; 20. a second straight gear; 21. an elastic block; 22. a pulley; 23. a belt; 24. a drive section; 25. a smooth section; 26. a first pulley set; 27. a second pulley set; 28. covering a skin; 29. a main shaft; 30. and (7) connecting the shafts.
Detailed Description
The technical solutions of the present invention will be described clearly and completely with reference to the following embodiments, and it should be understood that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be obtained by a person skilled in the art without inventive effort based on the embodiments of the present invention, are within the scope of protection of the present invention.
As shown in fig. 1 and 2, the skin milling operation pressing tool comprises a die body 1, a molding bed 2 is arranged on an end surface of the die body 1, a skin 28 is laid on the molding bed 2, and the appearance of the molding bed 2 is matched with the appearance required after the skin 28 is milled. The end face of the skin 28 is also provided with a pressing plate 3. In addition, a plurality of pressing assemblies 4 are further arranged on the end face of the die body 1 around the moulding platform 2, and the pressing plates 3 and the skin 28 can be pressed on the moulding platform 2 through the cooperation of the pressing assemblies 4. During the milling operation, the plane milling cutter is fed along the pressing plate 3 to complete the milling of the skin 28.
In order to solve the technical problem that the planer milling cutter needs to be withdrawn continuously to bypass the compressing assembly 4 for milling in the feeding process, as shown in fig. 1 to 7, the compressing assembly 4 is designed to include a mounting base 5 and two pressing rods 6 rotatably connected to the mounting base 5. Obviously, turning the two pressing rods 6 can cause both pressing rods 6 to press against the pressing plate 3. And still be provided with drive assembly 7 on the mount pad 5, drive assembly 7 and the driving source cooperation can make two depression bars 6 present the following motion state: when the planer milling cutter is continuously close to the pressing assembly 4, the front control pressure lever 6 is lifted, the spindle 29 of the planer milling cutter passes through the pressure lever 6, and then the pressure lever 6 presses the pressure plate 3 again. During this time, the spindle 29 of the router bit is normally advanced to mill the skin 28. Then, the rear pressure lever 6 is controlled to be lifted, the main shaft 29 of the planer milling cutter passes through the pressure lever 6, and then the pressure lever 6 is pressed on the pressure plate 3 again, so that the planer milling cutter does not go round the cutter, and the milling operation efficiency of the skin 28 is greatly improved.
Further, a drive unit 8 is provided on the spindle 29 of the planer milling cutter, and the drive unit 8 is used as a drive source required for the transmission unit 7 to drive and execute the above-described operation. Thus, the original power of the main shaft 29 is fully utilized as the driving force of the transmission assembly 7, thereby reducing the energy loss.
In particular, the transmission assembly 7 comprises two sets of transmission units 10, the two sets of transmission units 10 corresponding to the two pressure levers 6. And the transmission unit 10 includes a lifting part 11 and a pressing part 12 which are sequentially arranged in the advancing direction of the main shaft 29. When the driving assembly 8 passes through the lifting part 11, the lifting part 11 is in transmission fit with the driving assembly 8 and can drive the corresponding pressure lever 6 to lift; when the driving assembly 8 passes through the pressing part 12, the pressing part 12 is in transmission fit with the driving assembly 8 and can drive the corresponding pressing rod 6 to press the pressing plate 3 again.
More specifically, the drive assembly 8 is preferably a drive wheel 9. The lifting part 11 comprises a first transmission wheel 13 which is rotatably connected to the mounting base 5, the first transmission wheel 13 is coaxially provided with a first bevel gear 14 through a connecting shaft 30, a second bevel gear 15 is coaxially arranged on a rotating shaft of the pressure lever 6, and the second bevel gear 15 is meshed with the first bevel gear 14; the pressing portion 12 comprises a second transmission wheel 16 which is rotatably connected to the mounting base 5, a third bevel gear 17 is coaxially arranged on the second transmission wheel 16 through a connecting shaft 30, a fourth bevel gear 18 is further rotatably connected in the mounting base 5, the fourth bevel gear 18 is meshed with the third bevel gear 17, a first straight gear 19 is coaxially arranged on a rotating shaft of the fourth bevel gear 18, a second straight gear 20 is coaxially arranged on a rotating shaft of the pressing rod 6, and the second straight gear 20 is meshed with the first straight gear 19.
For ease of understanding, the following will describe the specific movement of the above components during use. That is to say that the first and second electrodes,
when the driving wheel 9 passes the lifting part 11, the driving wheel 9 contacts with the first transmission wheel 13 and transmission occurs. At this time, the first driving wheel 13 rotates, so that the first bevel gear 14 is driven to rotate through the connecting shaft 30, the rotating first bevel gear 14 drives the second bevel gear 15 to rotate, and the pressing rod 6 can perform and respond to the lifting action.
When the driving wheel 9 passes through the pressing part 12, the driving wheel 9 contacts with the second transmission wheel 16 and transmission occurs. At this time, the second driving wheel 16 rotates, so that the third bevel gear 17 is driven to rotate by the connecting shaft 30, the third rotating bevel gear 17 drives the fourth bevel gear 18 to rotate, the first spur gear 19 also rotates, and the first rotating spur gear 19 drives the second spur gear 20 to rotate. It will be appreciated that the strut 6 will perform and respond to the compression action as a result of the reversing transmission of the first spur gear 19 and the second spur gear 20.
In summary, when the spindle 29 of the planer milling cutter passes through the two transmission units 10 in sequence along the feed direction, both pressing rods 6 are lifted to pass through the spindle 29 and are pressed against the pressing rods 6 again after the spindle 29 passes through, so that the planer milling cutter can be fed without being bypassed. In the process, the pressing component 4 can ensure that at least one pressing rod 6 is pressed on the pressing plate 3 all the time, and the milling precision of the planer milling cutter is ensured.
Preferably, the driving wheel 9, the first transmission wheel 13 and the second transmission wheel 16 are all friction wheels. Therefore, the driving wheel 9 can stably transmit power when contacting with the first driving wheel 13 or the second driving wheel 16, and compared with the gear transmission, the driving wheel has the advantages of difficulty in tooth punching and high stability.
In addition, the diameter of bevel gear one 14 is preferably smaller than the diameter of bevel gear two 15, and the diameter of bevel gear three 17 is preferably smaller than the diameter of bevel gear four 18. Thus, when the driving wheel 9 is in driving fit with the first driving wheel 13 or the second driving wheel 16, the first bevel gear 14 (the third bevel gear 17) rotates for a plurality of turns, and the second bevel gear 15 (the fourth bevel gear 18) rotates for a certain angle, so that the pressing rod 6 is relatively slowly lifted or pressed. In other words, a reduction of the speed between the drive wheel 9 and the drive assembly 8 is achieved, so that the problem of the milling cutter spindle 29 rotating too fast is overcome. The first straight gear 19 and the second straight gear 20 can adopt equal ratio transmission, and the two gears only have reversing transmission effect.
Further, the end of each pressure lever 6 away from the mounting seat 5 is provided with an elastic block 21 extending downwards. And the elastic block 21 is detachably connected with the pressure rod 6, and preferably, the elastic block and the pressure rod can be connected by bolts. And it can be understood that by pressing the elastic blocks 21, the press rod 6 can apply a stronger pressing force to the press plate 3, and by replacing the elastic blocks 21 with different thicknesses, the tool can be adapted to the clamping requirements of skins 28 with different thicknesses.
However, in the process of the milling operation in which the planer is not bypassed, the pressing lever 6 is lifted up in order to let the planer pass. When the press rod 6 is lifted, a certain gap may appear between the press plate 3 and the skin 28 and the platen 2 after losing the partial pressing force, and further, the pressing effect of the pressing assembly 4 on the skin 28 is reduced. In detail, in the case of a gap, for example, a planer milling cutter directly mills the skin 28, and since the skin 28 is in an incompletely adhered state, the milled skin 28 may cause a certain deformation of the trimmed surface, which may further reduce the machining precision of the skin 28.
In order to solve the above problems, the inventors devised to transmit a connecting pulley set between the connecting shaft 30 of the lifting portion 11 and the connecting shaft 30 of the pressing portion 12 of the above different transmission unit 10. The pulley set specifically includes two pulleys 22 connected to two connecting shafts 30, and a belt 23 connected between the two pulleys 22, and the belt 23 includes a driving section 24 and a smooth section 25, where the smooth section 25 is a part for smoothing a driving surface of the belt 23, that is, the part has a low friction coefficient. In addition, the inventor has made a unique design of the positional relationship of the pulley 22, the driving segment 24, and the smoothing segment 25. For the sake of understanding and explanation, the pulley set between the lifting portion 11 of the forward pressure lever 6 and the pressing portion 12 of the backward pressure lever 6 is designated as a first pulley set 26, and the pulley set between the pressing portion 12 of the forward pressure lever 6 and the lifting portion 11 of the backward pressure lever 6 is designated as a second pulley set 27.
In order to achieve the object of solving the technical problem, the inventors designed: in the initial state, two belt wheels 22 in the first belt wheel set 26 are opposite to the driving section 24, and when the first transmission wheel 13 of the front pressure lever 6 rotates, the rear belt wheel 22 in the first belt wheel set 26 can be opposite to the smooth section 25;
in the initial state, the front pulley 22 in the second pulley set 27 is opposite to the smooth section 25, the rear pulley 22 in the second pulley set 27 is opposite to the driving section 24, and when the first transmission wheel 13 of the rear pressure lever 6 rotates, the front pulley 22 in the second pulley set 27 can be opposite to the driving section 24.
In this way, when the driving wheel 9 contacts with the first driving wheel 13 of the front press rod 6 to drive the press rod 6 to lift, the corresponding belt wheel set performs transmission, and at this time, the belt wheel 22 of the pressing part 12 of the rear press rod 6 rotates, so that the two press rods 6 can be in a use state that one press rod is lifted and the other press rod continues to be pressed. Obviously, the pressing rod 6 for further pressing can improve the pressing force of the pressing assembly 4 on the pressing plate 3, so that the gap is eliminated to ensure the pressing effect of the pressing assembly 4 on the skin 28. In the process, along with the transmission of the pulley group, the belt 23 rotates to a position state that the smooth section 25 is opposite to the pulley 22 of the pressing part 12 of the rear pressing rod 6, so that when the driving wheel 9 is in contact with the second driving wheel 16 of the rear pressing rod 6 to drive the pressing rod 6 to press, the pulley group slips and does not generate transmission, and the situation that the front pressing rod 6 is lifted up again is not easy to occur;
when the driving wheel 9 contacts with the second transmission wheel 16 of the front pressure lever 6 to drive the pressure lever 6 to be pressed tightly, the corresponding belt wheel 22 is opposite to the smooth section 25, so that the corresponding belt wheel set slips and no transmission occurs. Furthermore, the front pressure lever 6 can normally perform the pressing action, and the rear pressure lever 6 does not perform transmission, so as to ensure that one pressure lever 6 is always pressed on the pressure plate 3. When the driving wheel 9 contacts with the driving wheel 9 of the rear pressure lever 6 to drive the pressure lever 6 to lift, the corresponding belt wheel set transmits power, and the belt wheel 22 of the front pressure lever 6 is opposite to the driving section 24. At this time, the front press rod 6 will continue to press the press plate 3, and the rear press rod 6 will be lifted normally.
Further, the diameter of the pulley 22 on the connecting shaft 30 of the lifting portion 11 is smaller than the diameter of the pulley 22 on the connecting shaft 30 of the pressing portion 12. Thus, when one of the two pressing rods 6 is lifted and the other is pressed continuously, the lifted pressing rod 6 can have the capability of lifting greatly (i.e. the pressing rod 6 is lifted normally) under the action of the transmission ratio of the pulley set, so that the main shaft 29 can pass through smoothly, and the pressed pressing rod 6 has the capability of pressing the pressing plate 3 continuously with a small amplitude. The structural reasonability of the pressing tool is improved.
The foregoing is illustrative of the preferred embodiments of this invention, and it is to be understood that the invention is not limited to the precise form disclosed herein and that various other combinations, modifications, and environments may be resorted to, falling within the scope of the concept as disclosed herein, either as described above or as apparent to those skilled in the relevant art. And that modifications and variations may be effected by those skilled in the art without departing from the spirit and scope of the invention as defined by the appended claims.
Claims (10)
1. The utility model provides a covering mills operation pressfitting frock, includes die body (1), be provided with type platform (2) on die body (1), the covering is laid on type platform (2), clamp plate (3) have still been laid on the terminal surface of covering, die body (1) centers on type platform (2) still are provided with a plurality of subassemblies (4) that compress tightly, compress tightly subassembly (4) can with clamp plate (3), covering compress tightly in type platform (2), characterized by: compress tightly subassembly (4) and connect including mount pad (5) and rotation two depression bar (6) on mount pad (5), two depression bar (6) all compress tightly in clamp plate (3), still be provided with drive assembly (7) on mount pad (5), dig and be provided with drive assembly (8) on milling cutter's the main shaft, work as drive assembly (8) process during drive assembly (7), drive assembly (7) with drive assembly (8) transmission cooperation can drive and lean on the front depression bar (6) are lifted up in order to pass through the main shaft and recompress clamp plate (3), and then lean on the back depression bar (6) are lifted up in order to compress tightly again through the main shaft clamp plate (3).
2. The skin milling operation pressing tool according to claim 1, characterized in that: the drive assembly (8) comprises a drive wheel (9).
3. The skin milling operation pressing tool according to claim 2, characterized in that: the transmission assembly (7) comprises two groups of transmission units (10), the two groups of transmission units (10) correspond to the two pressing rods (6), and when the driving wheel (9) passes through the transmission units (10), the transmission units (10) are in transmission fit with the driving wheel (9) and can drive the corresponding pressing rods (6) to be lifted so as to press the pressing plate (3) again through the main shaft.
4. The skin milling operation pressing tool according to claim 3, characterized in that: the transmission unit (10) comprises a lifting part (11) and a pressing part (12) which are sequentially arranged along the advancing direction of the main shaft, and when the driving wheel (9) passes through the lifting part (11), the lifting part (11) is in transmission fit with the driving wheel (9) and can drive the corresponding pressure lever (6) to lift; when the driving wheel (9) passes through the pressing part (12), the pressing part (12) is in transmission fit with the driving wheel (9) and can drive the corresponding pressing rod (6) to press the pressing plate (3) again.
5. The skin milling operation pressing tool according to claim 4, wherein the skin milling operation pressing tool comprises: the lifting part (11) comprises a first driving wheel (13) which is rotatably connected to the mounting base (5), a first bevel gear (14) is coaxially arranged on the first driving wheel (13) through a connecting shaft, a second bevel gear (15) is coaxially arranged on a rotating shaft of the pressing rod (6), and the second bevel gear (15) is meshed with the first bevel gear (14).
6. The skin milling operation pressing tool according to claim 5, characterized in that: the utility model discloses a quick-witted bearing, including the installation seat, the bearing part is pressed from both sides to the bearing part (12) including rotating to be connected drive wheel two (16) on installation seat (5), drive wheel two (16) are through the coaxial bevel gear three (17) that is provided with of connecting axle, it is connected with bevel gear four (18) still to rotate in installation seat (5), bevel gear four (18) meshing in bevel gear three (17), coaxial spur gear one (19) that is provided with in the axis of rotation of bevel gear four (18), coaxial straight gear two (20) that is provided with in the axis of rotation of depression bar (6), spur gear two (20) meshing in straight gear one (19).
7. The skin milling operation pressing tool according to claim 1, characterized in that: the end part of the pressure lever (6) far away from the mounting seat (5) extends downwards to form an elastic block (21).
8. The skin milling operation pressing tool according to claim 6, wherein the skin milling operation pressing tool comprises: a pulley set is connected between the connecting shaft of the lifting part (11) and the connecting shaft of the pressing part (12) of different transmission units (10) in a transmission manner, the pulley set comprises two pulleys (22) respectively connected to the two connecting shafts and a belt (23) connected between the two pulleys (22), the belt (23) comprises a driving section (24) and a smooth section (25), the pulley set between the lifting part (11) of the front pressing rod (6) and the pressing part (12) of the rear pressing rod (6) is a first pulley set (26), and the pulley set between the pressing part (12) of the front pressing rod (6) and the lifting part (11) of the rear pressing rod (6) is a second pulley set (27);
in an initial state, two belt wheels (22) in the first belt wheel set (26) are opposite to the driving section (24), and when the first transmission wheel (13) of the front pressure lever (6) rotates, the rear belt wheel (22) in the first belt wheel set (26) can be opposite to the smooth section (25);
in an initial state, the belt wheel (22) at the front in the second belt wheel set (27) is opposite to the smooth section (25), the belt wheel (22) at the rear in the second belt wheel set (27) is opposite to the driving section (24), and when the driving wheel I (13) of the pressing rod (6) at the rear rotates, the belt wheel (22) at the front in the second belt wheel set (27) can be opposite to the driving section (24).
9. The skin milling operation pressing tool according to claim 8, characterized in that: the diameter of a belt wheel (22) on the connecting shaft of the lifting part (11) is smaller than that of a belt wheel (22) on the connecting shaft of the pressing part (12).
10. The skin milling operation pressing tool according to claim 7, characterized in that: the elastic block (21) is detachably connected with the pressure lever (6).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN202211560387.7A CN115570418B (en) | 2022-12-07 | 2022-12-07 | Skin milling operation pressfitting frock |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202211560387.7A CN115570418B (en) | 2022-12-07 | 2022-12-07 | Skin milling operation pressfitting frock |
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| CN115570418A true CN115570418A (en) | 2023-01-06 |
| CN115570418B CN115570418B (en) | 2023-03-14 |
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| CN202211560387.7A Active CN115570418B (en) | 2022-12-07 | 2022-12-07 | Skin milling operation pressfitting frock |
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| Publication number | Publication date |
|---|---|
| CN115570418B (en) | 2023-03-14 |
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