阅读说明：本技术 一种自动化数控机床用旋转执行器 (Rotary actuator for automatic numerical control machine tool ) 是由 张恒玮 于 2021-07-19 设计创作，主要内容包括：本发明涉及旋转机构技术领域,且公开了一种自动化数控机床用旋转执行器,包括外壳,外壳内腔靠近中间的位置上开设有旋转腔,旋转腔顶部和底部均开设有圆形通孔且该圆形通孔的内部活动套接有转轴,通过转轴的外表面固定套接有转动装置,使得转轴与转动装置之间的接触面增大,相较于传统齿轮套接方式,该设备所运用的安装方式可以再整体进行移动时或者变向时,活塞装置自身的惯性通过转动装置传递给转轴的时候能够通过其接触面较大使得作用力能够更为均匀的施加在转轴的外表面上,避免传统设备在进行移动或者变向时惯性通过齿条和齿轮传递给转轴导致转轴和齿轮的连接处承受了所有的作用力而导致该出易出现损伤并报废,从而降低了该装置使用成本。(The invention relates to the technical field of rotating mechanisms, and discloses a rotary actuator for an automatic numerical control machine, which comprises a shell, wherein a rotating cavity is arranged on the position, close to the middle, of an inner cavity of the shell, a circular through hole is formed in the top and the bottom of the rotating cavity, a rotating shaft is movably sleeved in the circular through hole, a rotating device is fixedly sleeved on the outer surface of the rotating shaft, so that the contact surface between the rotating shaft and the rotating device is increased, compared with the traditional gear sleeving mode, when the installation mode applied by the equipment can integrally move or change the direction, the inertia of a piston device is transmitted to the rotating shaft through the rotating device, the acting force can be more uniformly applied to the outer surface of the rotating shaft through the contact surface when the inertia of the piston device is transmitted to the rotating shaft through the rotating device, the phenomenon that the traditional equipment is easy to damage and scrap due to bearing all acting forces at the joint of the rotating shaft and a gear when the inertia is transmitted to the rotating shaft through a rack and the gear in moving or changing the direction is avoided, thereby reducing the use cost of the device.)

1. The utility model provides an automatic change rotary actuator for digit control machine tool, includes shell (1), its characterized in that: the device is characterized in that a rotating cavity (2) is formed in the position, close to the middle, of the inner cavity of the shell (1), a round through hole is formed in the top and the bottom of the rotating cavity (2), a rotating shaft (3) is sleeved on the inner portion of the round through hole, a rotating device (4) is sleeved on the outer surface of the rotating shaft (3), a stroke cavity (5) is formed in the position, located on the two sides of the rotating cavity (2), of the inner portion of the shell (1), the stroke cavity (5) penetrates through the two ends of the shell (1), a piston device (6) is sleeved on the inner portion of the stroke cavity (5), the piston device (6) is connected with the rotating device (4), a sealing cover plate (7) is fixedly installed on the position, located on one end of the stroke cavity (5), of the two ends of the shell (1), and located on the two sides of the outer surface of the shell (1) and close to the bottom, a pipeline box I (8a) and a pipeline box II (8b) are fixedly installed on the positions, respectively, pipeline case I (8a) one side is close to the top and is located and has seted up last inlet vent (9) on the position in the middle, the quantity of last inlet vent (9) is two, the inside fixed mounting that goes up inlet vent (9) one end and lie in pipeline case I (8a) has last inlet vent (10), the one end of going up inlet vent (10) and one side fixed connection of sealed apron (7) and be linked together with the inside in stroke chamber (5), pipeline case I (8a) one side is close to the bottom and is located and has seted up down inlet vent I (11) on the position in the middle, inlet channel I (12a) and inlet channel II (12b) have been seted up respectively on the position that stroke chamber (5) internal surface just is located the bottom, inlet channel I (12a) and inlet channel II (12b) are linked together respectively with stroke chamber (5) of shell (1) inside both sides and all are located stroke chamber (5) internal surface near its inboard intercommunication department of stroke chamber (5) and are located its orientation One end, the one end fixed mounting of lower inlet port I (11) has lower intake pipe I (13) and the one end of intake pipe I (13) is connected with inlet channel I (12a), inlet port II (14) down has been seted up to one side of pipeline case II (8b), the inside fixed mounting that inlet port II (14) one end just is located pipeline case II (8b) has lower intake pipe II (15) down, the one end of intake pipe II (15) is connected with inlet channel II (12b) down.

2. The rotary actuator for the automatic numerical control machine according to claim 1, wherein: rotating device (4) include rotor plate (41), the inside fixed mounting that fixed slot and this fixed slot were seted up to the both sides of rotor plate (41) surface has sealing strip (42), the top of rotor plate (41) has been seted up and has been cup jointed hole (43) and pivot (3) fixed cup joint, fixed mounting has sealed arc (44) on the position of rotor plate (41) both sides and be close to one end, rotor plate (41) both sides have just been seted up stroke hole I (45) on being close to the position of the other end, stroke I (46) and be connected with piston device (6) through stroke I (46) have been seted up to the top and the bottom of stroke I (45) inner chamber.

3. The rotary actuator for the automatic numerical control machine according to claim 1, wherein: the inner cavity of the shell (1) is divided into four cavities a, b, c and d by a rotating device (4) and a piston device (6).

4. The rotary actuator for the automatic numerical control machine according to claim 1, wherein: piston device (6) include piston plate (61), the fixed cover of the inside of fixed slot and this fixed slot has been seted up to the surface of piston plate (61) has connect sealing ring (62), stroke hole II (63) have been seted up to one side of piston plate (61), stroke groove II (64) have all been seted up at the both ends of stroke hole II (63) inside, the inside movable mounting of stroke groove II (64) has connector (65), the one end and the stroke hole I (45) of connector (65) are connected with stroke groove I (46).

Technical Field

The invention relates to the technical field of rotating mechanisms, in particular to a rotary actuator for an automatic numerical control machine tool.

Background

Along with the development of society and the progress of science and technology, present lathe is the digit control machine tool that has automation and multiaxis, also is become machining center, accessible programming and electrically controlled mode come control work piece platform and processing arm to realize the multiaxis operation, wherein rotary actuator is one of the most important component in the operation of control work piece platform, the piston of both sides is controlled through pneumatics or electronic mode during its principle and is moved, because rack on the piston and the epaxial gear intermeshing of commentaries on classics for the in-process that the piston moved can drive the pivot and rotate in step, thereby realize rotatory effect, and then control work piece platform rotates, this equipment has simple structure, easy maintenance, use cost advantage such as low.

Along with the existing rotary actuator for the automatic numerical control machine tool has a plurality of advantages, but a certain limitation still exists in the use process, because a piston in the rotary actuator is in a running state when entering, a gap exists between the piston and an inner wall so that the piston can better slide, and when the device is driven by a machine tool sliding table to perform acceleration, deceleration or direction change movement, the inertia of the piston can directly act on a rotating shaft through a rack and a gear, and the contact surface between the gear and the rotating shaft is small, so that the surface of the rotating shaft is damaged, and the service life of the device is reduced.

Disclosure of Invention

Aiming at the defects of the existing rotary actuator for the automatic numerical control machine tool in the background technology in the using process, the invention provides the rotary actuator for the automatic numerical control machine tool, which has the advantage of balancing the inertia generated by a piston in the acceleration, deceleration and turning processes, and solves the problem that a rotating shaft is damaged when the inertia of the piston acts on the rotating shaft.

The invention provides the following technical scheme: a rotary actuator for an automatic numerical control machine tool comprises a shell, wherein a rotary cavity is formed in the position, close to the middle, of an inner cavity of the shell, a circular through hole is formed in the top and the bottom of the rotary cavity, a rotary shaft is movably sleeved in the circular through hole, a rotating device is fixedly sleeved on the outer surface of the rotary shaft, stroke cavities are formed in the positions, located on the two sides of the rotary cavity, in the shell, the stroke cavities penetrate through the two ends of the shell, piston devices are movably sleeved in the stroke cavities and connected with the rotating device, sealing cover plates are fixedly mounted at the two ends of the shell and at one end of the stroke cavities, a pipeline box I and a pipeline box II are fixedly mounted at the positions, located on the two sides and close to the bottom, of the outer surface of the shell respectively, an upper air inlet hole is formed in the position, close to the top and located in the middle, of one side of the pipeline box I, the number of the upper air inlet holes is two, an upper air inlet pipe is fixedly arranged at one end of the upper air inlet hole and is positioned in the pipeline box I, one end of the upper air inlet pipe is fixedly connected with one side of the sealing cover plate and is communicated with the interior of the stroke cavity, a lower air inlet hole I is formed in the position, close to the bottom and in the middle, of one side of the pipeline box I, an air inlet channel I and an air inlet channel II are respectively formed in the position, on the inner surface of the stroke cavity and in the position, of the bottom, an air inlet channel I and an air inlet channel II are respectively communicated with the stroke cavities on the two sides of the interior of the shell, the communication position between the air inlet channel I and the stroke cavity is positioned at the end, close to the inner side, of the stroke cavity, a lower air inlet pipe I is fixedly arranged at one end of the lower air inlet hole I, the end of the lower air inlet hole II is connected with the air inlet channel I, a lower air inlet pipe II is fixedly arranged at one end of the lower air inlet hole II and in the pipeline box II, and one end of the lower air inlet pipe II is connected with the air inlet channel II.

Preferably, rotating device includes the rotor plate, the inside fixed mounting of fixed slot and this fixed slot has the sealing strip seted up to the both sides of rotor plate surface, the top of rotor plate has been seted up and has been cup jointed the hole and cup joint with the pivot is fixed, fixed mounting has sealed arc on the rotor plate both sides and the position that is close to one end, the rotor plate both sides have just been seted up stroke hole I on being close to the position of the other end, stroke I inner chamber in stroke hole's top and bottom have been seted up stroke groove I and have been connected with piston device through stroke groove I.

Preferably, the inner cavity of the housing is divided into four cavities a, b, c and d by the rotating device and the piston device.

Preferably, the piston device includes the piston board, the fixed slot has been seted up to the surface of piston board and the fixed sealing ring that has cup jointed in inside of this fixed slot, stroke hole II has been seted up to one side of piston board, stroke groove II has all been seted up at the inside both ends in stroke hole II, the inside movable mounting in stroke groove II has the connector, the one end and the stroke hole I and the stroke groove I of connector are connected.

The invention has the following beneficial effects:

1. according to the invention, the rotating device is fixedly sleeved on the outer surface of the rotating shaft, so that the contact surface between the rotating shaft and the rotating device is increased, compared with the traditional gear sleeving manner, the mounting manner applied by the equipment can be integrally moved or changed in direction, when the inertia of the piston device is transmitted to the rotating shaft through the rotating device, the acting force can be more uniformly applied to the outer surface of the rotating shaft through the contact surface, and the phenomenon that the traditional equipment is easy to damage and scrap due to the fact that the inertia is transmitted to the rotating shaft through the rack and the gear when the traditional equipment is moved or changed in direction, all acting force is borne at the joint of the rotating shaft and the gear is avoided, so that the use cost of the equipment is reduced.

2. According to the invention, the sealing arc plates are fixedly arranged at the positions on the two sides of the rotating plate and close to one end, so that when the rotating device is integrally contacted with the inner wall of the rotating cavity, the contact area between the rotating device and the inner wall of the rotating cavity can be increased, the friction force between the rotating device and the rotating cavity can be more uniformly distributed, the phenomenon that the sealing strip is damaged due to excessive friction between the sealing strip and the inner wall of the rotating cavity and the reduction of air tightness caused by the damaged sealing strip is avoided, the air tightness between the rotating device and the rotating cavity can be improved due to the existence of the sealing arc plates, meanwhile, when the rotating device rotates under the action of the piston device, the sealing arc plates can prevent the cavities on the two sides of the rotating plate from being communicated when the rotating plate rotates to the stroke cavity, so that the introduced gas cannot balance the inertia of the piston device, the phenomenon that the rotating shaft is damaged due to excessive acting force on the rotating shaft is avoided, and the operation reliability of the rotating device is improved.

3. The invention is respectively communicated with the stroke cavities at two sides in the shell through the air inlet channel I and the air inlet channel II, and the communication parts of the air inlet channel I and the air inlet channel II and the stroke cavities are positioned at one end, close to the inner side, of the inner surface of the stroke cavity, so that in the process of moving or suddenly changing the direction of the device, if the device moves in a horizontal direction to the right in a figure 2, air can be controlled to enter the cavity a and the cavity c from the upper air inlet hole and the lower air inlet pipe II at one side and pass through the upper air inlet pipe and the air inlet channel II, so that a horizontal acting force is formed on the piston device, the inertia of the piston device is counteracted, the acting force generated on a rotating shaft when the piston device moves or changes the direction is reduced, if the device moves in a horizontal direction to the left in the figure 2, the air can be controlled to enter the cavity b and the cavity d from the upper air inlet hole and the lower air inlet pipe II at the other side and pass through the upper air inlet pipe and the air inlet channel I, therefore, horizontal acting force towards the left is formed on the piston device, so that the inertia of the piston device is counteracted, the acting force generated on the rotating shaft when the piston device moves or changes direction is reduced, and the service life of the rotating device in the device is prolonged.

Drawings

FIG. 1 is a schematic front view of the structure of the present invention;

FIG. 2 is a schematic view of the backside of the inventive structure;

FIG. 3 is a schematic cross-sectional view of the structure of the present invention;

FIG. 4 is a schematic cross-sectional view taken along the direction A in FIG. 3 according to the present invention;

FIG. 5 is a schematic cross-sectional view taken along the direction B in FIG. 3 according to the present invention;

FIG. 6 is a schematic view of the front face of the inventive structure for pipe connection;

FIG. 7 is a schematic view of the back side duct connections of the inventive structure;

FIG. 8 is a schematic view of a rotary device of the present invention;

FIG. 9 is a front view of the turning gear of the present invention;

FIG. 10 is a schematic cross-sectional view taken along line A of FIG. 9 of the rotating apparatus of the present invention;

FIG. 11 is a schematic cross-sectional view taken at B in FIG. 9 of the rotating apparatus according to the present invention;

FIG. 12 is a schematic view of a piston assembly of the present invention;

fig. 13 is a schematic cross-sectional view of a piston assembly in accordance with the present invention.

In the figure: 1. a housing; 2. a rotating chamber; 3. a rotating shaft; 4. a rotating device; 41. a rotating plate; 42. a sealing strip; 43. sleeving a hole; 44. sealing the arc-shaped plate; 45. a stroke hole I; 46. a stroke groove I; 5. a stroke chamber; 6. a piston device; 61. a piston plate; 62. a seal ring; 63. a stroke hole II; 64. a stroke groove II; 65. a connector; 7. sealing the cover plate; 8a, a pipeline box I; 8b, a pipeline box II; 9. an upper air inlet hole; 10. an upper intake pipe; 11. a lower air inlet hole I; 12a, an air inlet channel I; 12b, an air inlet channel II; 13. a lower air inlet pipe I; 14. a lower air inlet hole II; 15. and a lower air inlet pipe II.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious 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 derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

Referring to fig. 1-13, a rotary actuator for an automatic numerical control machine tool, including a housing 1, a rotary cavity 2 is provided at a position near the middle of an inner cavity of the housing 1, a circular through hole is provided at the top and bottom of the rotary cavity 2, a rotary shaft 3 is movably sleeved inside the circular through hole, a rotating device 4 is sleeved on the outer surface of the rotary shaft 3, so that the contact surface between the rotary shaft 3 and the rotating device 4 is increased, compared with the traditional gear sleeving mode, when the mounting mode applied by the device can move integrally or change direction, the inertia of a piston device 6 can be applied on the outer surface of the rotary shaft 3 more uniformly through the larger contact surface when the inertia is transmitted to the rotary shaft 3 through the rotating device 4, and the phenomenon that the inertia is transmitted to the rotary shaft through a rack and a gear when the traditional device moves or changes direction, so that the joint of the rotary shaft and the gear bears all acting forces and the damage is easily caused and the damage is avoided Scrapping is realized, thereby reducing the use cost of the device, the rotating device 4 comprises a rotating plate 41, two sides of the outer surface of the rotating plate 41 are provided with fixed grooves, sealing strips 42 are fixedly arranged inside the fixed grooves, the top of the rotating plate 41 is provided with a sleeve hole 43, the sleeve hole 43 is fixedly sleeved with the rotating shaft 3, sealing arc plates 44 are fixedly arranged on the positions, close to one end, of two sides of the rotating plate 41, so that when the rotating device 4 is integrally contacted with the inner wall of the rotating cavity 2, the contact area between the rotating device and the rotating cavity can be increased, the friction force between the rotating device and the rotating cavity can be distributed more uniformly, the phenomenon that the sealing strips 42 are damaged and the air tightness is reduced due to excessive friction between the sealing strips 42 and the inner wall of the rotating cavity 2 is avoided, the existence of the sealing arc plates 44 can also improve the air tightness between the rotating device 4 and the rotating cavity 2, and simultaneously, when the rotating device 4 rotates under the action of the piston device 6, the sealing arc-shaped plate 44 can prevent the cavities at the two sides of the rotating plate 41 from being communicated to cause that the introduced gas cannot balance the inertia of the piston device 6 when the rotating plate 41 rotates to the stroke cavity 5, and prevent the rotating shaft 3 from being damaged due to overlarge acting force applied to the rotating shaft 3, thereby improving the operation reliability of the device, the positions at the two sides of the rotating plate 41 and near the other end are provided with stroke holes I45, the top and the bottom of the inner cavity of the stroke hole I45 are provided with stroke grooves I46 and are connected with the piston device 6 through the stroke grooves I46, the inner cavity of the shell 1 is divided into four cavities a, b, c and d by the rotating device 4 and the piston device 6, the positions inside the shell 1 and at the two sides of the rotating cavity 2 are provided with the stroke cavity 5, the stroke cavity 5 penetrates through the two ends of the shell 1, the piston device 6 is movably sleeved inside the stroke cavity 5, and the piston device 6 is connected with the rotating device 4, the piston device 6 comprises a piston plate 61, a fixing groove is formed in the outer surface of the piston plate 61, a sealing ring 62 is fixedly sleeved in the fixing groove, a stroke hole II 63 is formed in one side of the piston plate 61, stroke grooves II 64 are formed in two ends of the inner portion of the stroke hole II 63, a connector 65 is movably installed in the stroke grooves II 64, one end of the connector 65 is connected with the stroke hole I45 and the stroke groove I46, a sealing cover plate 7 is fixedly installed at two ends of the shell 1 and located at one end of the stroke cavity 5, a pipeline box I8 a and a pipeline box II 8b are fixedly installed at positions, located at two sides and close to the bottom, of the outer surface of the shell 1 respectively, an upper air inlet hole 9 is formed in one side of the pipeline box I8 a, located at the middle of the top of the pipeline box, two upper air inlet holes 9 are formed, an upper air inlet pipe 10 is fixedly installed at one end of the upper air inlet hole 9 and located in the pipeline box I8 a, one end of an upper air inlet pipe 10 is fixedly connected with one side of a sealing cover plate 7 and is communicated with the inside of a stroke cavity 5, a lower air inlet hole I11 is formed in a position, close to the bottom and located in the middle, of one side of a pipeline box I8 a, an air inlet channel I12 a and an air inlet channel II 12b are respectively formed in a position, located on the bottom, of the inner surface of the stroke cavity 5, the air inlet channel I12 a and the air inlet channel II 12b are respectively communicated with the stroke cavity 5 on two sides of the inside of a shell 1, and communicated parts with the stroke cavity 5 are located at one end, close to the inner side, of the inner surface of the stroke cavity 5, so that in the moving or sudden direction changing process of the device, if the device does horizontal rightward acceleration movement in a figure 2, air can be controlled to enter a cavity a and a cavity c from the upper air inlet hole 9 and the lower air inlet pipe II 15 on one side and pass through the upper air inlet pipe 10 and the air inlet channel II 12b, and accordingly a horizontal rightward acting force is formed on a piston device 6, so as to offset inertia of the piston device 6, thereby reducing acting force generated by the piston device 6 when the piston device moves or changes direction on the rotating shaft 3, if the piston device moves horizontally leftwards in an accelerating manner in the figure 2, air can be controlled to enter the cavity b and the cavity d from the upper air inlet hole 9 and the lower air inlet pipe II 15 on the other side and pass through the upper air inlet pipe 10 and the air inlet channel I12 a, thereby forming horizontal leftwards acting force on the piston device 6, so as to offset inertia of the piston device 6, thereby reducing acting force generated by the piston device 6 when the piston device moves or changes direction on the rotating shaft 3, prolonging service life of the rotating device 4 in the device, one end of the lower air inlet hole I11 is fixedly provided with the lower air inlet pipe I13, one end of the lower air inlet pipe I13 is connected with the air inlet channel I12 a, one side of the pipeline box II 8b is provided with the lower air inlet hole II 14, one end of the lower air inlet hole II 14 is positioned in the pipeline box II b and is fixedly provided with the lower air inlet pipe II 15, one end of the lower intake pipe ii 15 is connected to the intake passage ii 12 b.

The using method of the invention is as follows:

in the use process, the contact surface between the rotating shaft 3 and the rotating device 4 is increased, compared with the traditional gear sleeve connection mode, the installation mode applied by the equipment can be integrally moved or changed, when the inertia of the piston device 6 is transmitted to the rotating shaft 3 through the rotating device 4, acting force can be more uniformly applied to the outer surface of the rotating shaft 3 through the contact surface when the inertia of the piston device 6 is transmitted to the rotating shaft 3, when the rotating device 4 is integrally contacted with the inner wall of the rotating cavity 2, the contact area between the rotating shaft and the rotating cavity can be increased, friction force between the rotating shaft and the rotating cavity can be more uniformly distributed, the sealing arc-shaped plate 44 also can improve the air tightness between the rotating device 4 and the rotating cavity 2, meanwhile, when the rotating device 4 rotates under the action of the piston device 6, the sealing arc-shaped plate 44 can avoid that the containing cavities on the two sides of the rotating plate 41 are communicated when the rotating plate 41 rotates to the stroke cavity 5, and the introduced air cannot be used for inertia of the piston device 6 And (4) balancing.

In the process of moving or suddenly changing direction, if the device moves in an accelerating manner along the horizontal direction in the right direction in fig. 2, the device can control the air to enter the cavity a and the cavity c from the upper air inlet hole 9 and the lower air inlet pipe II 15 on one side and through the upper air inlet pipe 10 and the air inlet channel II 12b, so as to form horizontal acting force to the piston device 6, so as to counteract the inertia of the piston device 6, thereby reducing the acting force generated to the rotating shaft 3 when the piston device 6 moves or changes direction, if the piston device moves horizontally leftwards along the figure 2, the air can be controlled to enter the cavity b and the cavity d from the upper air inlet hole 9 and the lower air inlet pipe II 15 on the other side and pass through the upper air inlet pipe 10 and the air inlet channel I12 a, thereby exerting a horizontal leftward force on the piston means 6 to counteract the inertia of the piston means 6 and thereby reduce the force exerted on the shaft 3 by the piston means 6 when moving or changing direction.

It is noted that, herein, relational terms such as first and second, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.