CN110900445A - Floating polishing device - Google Patents
Floating polishing device Download PDFInfo
- Publication number
- CN110900445A CN110900445A CN201911333785.3A CN201911333785A CN110900445A CN 110900445 A CN110900445 A CN 110900445A CN 201911333785 A CN201911333785 A CN 201911333785A CN 110900445 A CN110900445 A CN 110900445A
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- China
- Prior art keywords
- main shaft
- wall
- plunger
- plunger mounting
- fixing sleeve
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B24—GRINDING; POLISHING
- B24B—MACHINES, DEVICES, OR PROCESSES FOR GRINDING OR POLISHING; DRESSING OR CONDITIONING OF ABRADING SURFACES; FEEDING OF GRINDING, POLISHING, OR LAPPING AGENTS
- B24B41/00—Component parts such as frames, beds, carriages, headstocks
- B24B41/04—Headstocks; Working-spindles; Features relating thereto
Abstract
The application discloses a floating polishing device which comprises a shell, a main shaft fixing sleeve, a thread sleeve and a main shaft, wherein a plunger mounting ring is arranged inside the shell, an air containing space is reserved between the plunger mounting ring and the inner wall of the shell, an air path joint is arranged on the shell, a plurality of plungers are slidably arranged on the plunger mounting ring, the inside of the shell is communicated with the inside of the plunger mounting ring to form an inner hole, the main shaft can be movably arranged in the inner hole, and a first suspension space is reserved between the main shaft and the inner hole; the spindle fixing sleeve is sleeved on the outer side of the spindle, the thread sleeve is sleeved on the outer side of the spindle fixing sleeve, and a second suspension space and a third suspension space are respectively reserved between the thread sleeve and the spindle fixing sleeve and between the shell and the spindle fixing sleeve; the air path joint supplies air to the air containing space and extrudes one end of each plunger, and the other end of each plunger is abutted against the main shaft fixing sleeve. The application has solved grinding device's the poor, quality of polishing head position controllability, and the fragile technical problem.
Description
Technical Field
The application relates to the technical field of polishing of robots, in particular to a floating polishing device.
Background
In traditional robot field of polishing, usually through setting for the motion trail to the teaching robot to realize polishing to the work piece outline through the teaching robot. Before grinding, off-line programming is needed according to geometric data of the workpiece appearance, so that a motion track of the robot in the grinding process is generated, and after the motion track is generated, subsequent workpiece grinding work is carried out according to the motion track. However, since each workpiece has a certain difference from the original designed outline dimension during the production and forming process, the outlines of the workpieces are not completely the same, in this case, uneven grinding occurs if grinding is performed according to the completely same motion track, that is: when the workpiece is in a position with a large outer contour depression, the polishing quality is affected because the polishing head cannot polish the workpiece; when meeting the protruding great position of outer profile on the work piece, can appear polishing head atress too big condition suddenly, lead to the damage of work piece or the claviform consumptive material fracture that is connected with polishing head very easily, increase cost appears the dead situation of motor card even, seriously influences the life of motor and the normal clear of work.
Aiming at the problems of poor position adjustability and controllability, poor polishing quality and easy damage of a polishing head of a polishing device in the related art, an effective solution is not provided at present.
Disclosure of Invention
The utility model provides a main aim at provides a grinding device floats to but solve grinding device's the poor, not good quality of polishing of head position controllability, and the fragile problem of polishing.
In order to achieve the above object, the present application provides a floating polishing device.
According to the grinding device that floats of this application, grinding device that floats includes that shell, the fixed cover of main shaft, thread bush float and locate the inboard main shaft of shell, wherein:
the outer shell is of a cylindrical structure, the axial direction of the outer shell is arranged along the horizontal direction, a plunger mounting ring is fixedly arranged in the outer shell along the circumferential direction of the outer shell, a plurality of plunger mounting holes are formed in the plunger mounting ring along the axial direction of the plunger mounting ring, an air containing space communicated with each plunger mounting hole is reserved between the plunger mounting ring and the inner wall of the outer shell, an air path joint connected with an external air supply device is mounted on the outer shell and communicated with the air containing space, a plunger is slidably arranged in each plunger mounting hole along the axial direction of the plunger mounting ring, the interior of the outer shell is communicated with the interior of the plunger mounting ring to form an inner hole, the spindle can be movably arranged in the inner hole, and a first suspension space for floating of the spindle is reserved between the outer wall of the spindle and the inner wall of the inner hole;
the spindle fixing sleeve and the thread sleeve are of a cylindrical structure arranged along the axial direction of the shell, the spindle fixing sleeve is arranged on the outer side of the spindle, the thread sleeve is arranged on the outer side of the spindle fixing sleeve in a sleeved mode, the thread sleeve and the spindle fixing sleeve are movably and hermetically connected, a second suspension space and a third suspension space for floating the spindle are reserved between the inner wall of the thread sleeve and the outer wall of the spindle fixing sleeve and between the inner wall of the shell and the inner wall of the spindle fixing sleeve respectively, and the first suspension space, the second suspension space and the third suspension space are communicated;
the main shaft fixing sleeve is close to one end of the plunger mounting ring and opposite to the position of each plunger, the air path joint supplies air to the air containing space and extrudes one end of each plunger, so that the other end of each plunger can slide from the corresponding plunger mounting ring, extend out of the third suspension space and abut against the main shaft fixing sleeve.
Furthermore, the head and the tail of the main shaft respectively extend out of two ends of the shell, the head of the main shaft is used for being connected with a polishing head, a protective cover is sleeved at the tail of the main shaft, and the edge of the protective cover is connected with the outer wall of the shell.
Further, the fixed cover of main shaft is close to plunger installation circle one end is followed the circumference of the fixed cover of main shaft head is provided with first boss, follow on the screw thread cover the spacing groove has been seted up to the circumference of screw thread cover, the position of spacing groove with the position of first boss is relative, the fixed cover of main shaft with be provided with the support ring between the screw thread cover, the support ring is followed the circumference of the fixed cover of main shaft with first boss fixed connection, just the support ring can inlay movably and locate in the spacing inslot.
Furthermore, at least one positioning groove is formed in the inner wall of the shell, the position of the positioning groove is opposite to the position of the outer edge of the first boss, at least one positioning bead is arranged between the shell and the main shaft fixing sleeve, the positioning bead is fixedly connected with the outer edge of the first boss, and the positioning bead can be movably embedded in the positioning groove.
Further, be provided with along its axial in the plunger mounting hole and cover, the outer wall of covering with the inner wall of plunger mounting hole laminates mutually, the plunger can set up with sliding in the cover, just the outer wall of plunger with the inner wall of covering with laminating mutually.
Furthermore, a first sealing ring is arranged between the threaded sleeve and the main shaft fixing sleeve, and the first sealing ring is tightly pressed between the inner wall of one end, away from the plunger mounting ring, of the threaded sleeve and the outer wall of the main shaft fixing sleeve.
Furthermore, the plunger mounting holes are uniformly distributed along the circumferential direction of the plunger mounting ring
Furthermore, the outer wall of the plunger mounting ring is in threaded connection with the inner wall of the shell, a second sealing ring is arranged between the outer edge of the plunger mounting ring and the inner wall of the shell, and a third sealing ring is arranged between the inner edge of the plunger mounting ring and the inner wall of the shell.
Furthermore, an annular second boss is arranged on the inner edge of one end, far away from the threaded sleeve, of the shell, the second sealing ring is tightly pressed between the outer edge of the plunger mounting ring and the second boss, and the third sealing ring is tightly pressed between the inner edge of the plunger mounting ring and the second boss.
Furthermore, the main shaft fixing sleeve is connected with the main shaft through a plurality of bolts.
In the embodiment of the application, a plunger mounting ring is fixedly arranged in the shell, a plurality of plunger mounting holes are arranged on the plunger mounting ring along the axial direction of the plunger mounting ring, a plunger is slidably arranged in each plunger mounting hole along the axial direction of the plunger, an air passage joint is arranged on the shell, the interior of the shell is communicated with the interior of the plunger mounting ring to form an inner hole, a main shaft can be movably arranged in the inner hole formed by the shell and the plunger mounting ring, a first suspension space is reserved between the outer wall of the main shaft and the inner wall of the inner hole, a main shaft fixing sleeve is fixedly sleeved on the outer side of the main shaft, a threaded sleeve can be movably sleeved on the outer side of the main shaft fixing sleeve, a second suspension space and a third suspension space which are communicated with the first suspension space are respectively reserved between the inner wall of the threaded sleeve and the outer wall of the main shaft fixing sleeve and between the inner wall of the shell and the, so that the other end of each plunger extends into the third suspension space and is abutted against the main shaft fixing sleeve, and the main shaft is positioned in the middle of the shell. When the polishing head touches the outer contour of the workpiece and the convex position of the outer contour of the workpiece exceeds the preset movement track range of the polishing head in a polishing state, the pressure on one side of the polishing head, which is contacted with the workpiece, is increased, the pressure is transmitted to the plunger on one side through the polishing head, the main shaft and the main shaft fixing sleeve in sequence, and the corresponding plunger is compressed back into the plunger mounting hole, so that the main shaft which is arranged in the first suspension space, the second suspension space and the third suspension space in a floating way is deflected at a certain angle, the polishing head avoids the convex position on the outer contour of the workpiece, the damage of the polishing head, the main shaft or the workpiece caused by the sudden increase of the pressure on the position contacted with the workpiece is effectively avoided, the occurrence of the condition that the motor is blocked is effectively avoided, the adjustability of the positions of the polishing head and the main shaft is greatly improved, the optimal polishing effect on the workpiece is achieved, and the problems that the, Poor grinding quality and easy damage.
Drawings
The accompanying drawings, which are incorporated in and constitute a part of this application, serve to provide a further understanding of the application and to enable other features, objects, and advantages of the application to be more apparent. The drawings and their description illustrate the embodiments of the invention and do not limit it. In the drawings:
figure 1 is a front cross-sectional view of a floating sanding device of the present invention.
Detailed Description
In order to make the technical solutions better understood by those skilled in the art, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are only partial embodiments of the present application, but not all 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 application.
It should be noted that the terms "first," "second," and the like in the description and claims of this application and in the drawings described above are used for distinguishing between similar elements and not necessarily for describing a particular sequential or chronological order. It should be understood that the data so used may be interchanged under appropriate circumstances such that embodiments of the application described herein may be used. Furthermore, the terms "comprises," "comprising," and "having," and any variations thereof, are intended to cover a non-exclusive inclusion, such that a process, method, system, article, or apparatus that comprises a list of steps or elements is not necessarily limited to those steps or elements expressly listed, but may include other steps or elements not expressly listed or inherent to such process, method, article, or apparatus.
In this application, the terms "upper", "lower", "left", "right", "front", "rear", "top", "bottom", "inner", "outer", "middle", "vertical", "horizontal", "lateral", "longitudinal", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings. These terms are used primarily to better describe the invention and its embodiments and are not intended to limit the indicated devices, elements or components to a particular orientation or to be constructed and operated in a particular orientation.
Moreover, some of the above terms may be used to indicate other meanings besides the orientation or positional relationship, for example, the term "on" may also be used to indicate some kind of attachment or connection relationship in some cases. The specific meanings of these terms in the present invention can be understood by those skilled in the art as appropriate.
Furthermore, the terms "mounted," "disposed," "provided," "connected," and "sleeved" are to be construed broadly. For example, it may be a fixed connection, a removable connection, or a unitary construction; can be a mechanical connection, or an electrical connection; may be directly connected, or indirectly connected through intervening media, or may be in internal communication between two devices, elements or components. The specific meanings of the above terms in the present invention can be understood by those of ordinary skill in the art according to specific situations.
It should be noted that the embodiments and features of the embodiments in the present application may be combined with each other without conflict. The present application will be described in detail below with reference to the embodiments with reference to the attached drawings.
As shown in fig. 1, the present application relates to a floating polishing device, which comprises a housing 2, a main shaft fixing sleeve 6, a thread sleeve 9 and a main shaft 1 floating inside the housing 2, wherein: the shell 2 is the cylindric structure that its axial set up along the horizontal direction, the fixed ring shape plunger installing ring 3 that is provided with of circumference along shell 2 in the inside of shell 2, a plurality of plunger mounting holes have been seted up along its axial on plunger installing ring 3, leave the appearance gas space 16 with each plunger mounting hole intercommunication between the one end of plunger installing ring 3 and the inner wall of shell 2, install gas circuit joint 14 on the shell 2, the one end and the outside air feeder of gas circuit joint 14 are connected, the other end and the appearance gas space 16 of gas circuit joint 14 are linked together. Plungers 4 are arranged in the plunger mounting holes in a sliding manner along the axial direction of the plungers, the outer walls of the plungers 4 are attached to the inner walls of the corresponding plunger mounting holes, the inside of the shell 2 is communicated with the inside of the plunger mounting ring 3 to form inner holes, the aperture of each inner hole is larger than that of the spindle 1, the spindle 1 can be movably arranged in each inner hole, and a first suspension space 15 for the spindle 1 to float is reserved between the outer wall of the spindle 1 and the inner wall of each inner hole; the main shaft fixing sleeve 6 and the threaded sleeve 9 are both cylindrical structures arranged along the axial direction of the shell 2, the main shaft fixing sleeve 6 is fixedly sleeved on the outer side of the main shaft 1, the threaded sleeve 9 is sleeved on the outer side of the main shaft fixing sleeve 6, and the outer diameter of the main shaft fixing sleeve 6 is smaller than the inner diameter of the shell 2 and the threaded sleeve 9 at the corresponding positions. The threaded sleeve 9 is movably and hermetically connected with the main shaft fixing sleeve 6, a second suspension space 17 for the main shaft 1 to float is reserved between the inner wall of the threaded sleeve 9 and the outer wall of the main shaft fixing sleeve 6, a third suspension space 18 for the main shaft 1 to float is reserved between the inner wall of the shell 2 and the inner wall of the main shaft fixing sleeve 6, and the first suspension space 15, the second suspension space 17 and the third suspension space 18 are communicated. The main shaft fixing sleeve 6 is opposite to the position of each plunger 4 at one end close to the plunger mounting ring 3, the air path joint 14 supplies air to the air containing space and extrudes one end of each plunger 3, so that the other end of each plunger 3 can slide from the corresponding plunger mounting ring 3, extend out of the third suspension space 18 and abut against the main shaft fixing sleeve 6.
According to the invention, air is supplied into the air containing space 16 through the air path joint 14, the air in the air containing space 16 extrudes one end of each plunger 4, each plunger 4 slides in the corresponding plunger mounting hole under the pressure action of the air, so that the other end of each plunger 4 extends into the third suspension space 18 and is abutted against one end of the main shaft fixing sleeve 6, and at the moment, the main shaft 1 is positioned in the middle position of the shell 2. When the polishing head touches the convex position on the outer contour of the workpiece and exceeds the preset movement track range of the polishing head in the polishing state of the workpiece, the pressure on the side of the polishing head contacting the workpiece is increased, the pressure is transmitted to the plunger 4 on one side through the polishing head, the main shaft 1 and the main shaft fixing sleeve 6 in sequence, the corresponding plunger 4 is compressed back into the plunger mounting hole, the main shaft 1 which is arranged in the first suspension space 15, the second suspension space 17 and the third suspension space 18 in a floating mode is inclined at a certain angle, the polishing head is made to avoid a convex position on the outer contour of the workpiece, damage to the polishing head, the main shaft 1 or the workpiece caused by sudden increase of pressure of the contact position of the polishing head and the workpiece is effectively avoided, the situation that a motor is blocked is effectively avoided, the position of the polishing head and the position of the main shaft 1 are greatly adjustable and controllable, and the best polishing effect on the workpiece is achieved.
Further, as shown in fig. 1, the spindle 1 is arranged along a horizontal direction, a head of the spindle 1 extends out from one end of the housing 2, so that the spindle 1 is connected with a polishing head, a tail of the spindle 1 extends out from the other end of the housing 2, the head of the spindle 1 is used for connecting the polishing head, a cylindrical shield 13 with an opening at one end and a sealed opening at the other end is sleeved at the tail of the spindle 1, an edge of the opening end of the shield 13 is connected with an outer wall of the housing 2, the spindle 1 is protected by the shield 13, and normal operation of the spindle 1 is ensured.
Furthermore, the number of the plunger mounting holes is eight, and the plunger mounting holes are uniformly distributed along the circumferential direction of the plunger mounting ring 3, so that the plungers 4 are uniformly arranged along the circumferential direction of the plunger mounting ring 3, and the requirement that the main shaft 1 can incline in any direction can be met.
Further, the main shaft fixing sleeve 6 is connected with the main shaft 1 through a plurality of bolts.
In an alternative embodiment of the present invention, as shown in fig. 1, an annular first boss 601 is disposed on an outer wall of one end of the main shaft fixing sleeve 6 close to the plunger mounting ring 3 along a circumferential direction of the main shaft head fixing sleeve 6, an annular limiting groove 901 is disposed on the threaded sleeve 9 along the circumferential direction of the threaded sleeve 9, the position of the limiting groove 901 is opposite to the position of the first boss 601, a support ring 7 is disposed between the main shaft fixing sleeve 6 and the threaded sleeve 9, the support ring 7 is fixedly connected to the first boss 601 along the circumferential direction of the main shaft fixing sleeve 6, and the support ring 7 can be movably embedded in the limiting groove 901. The supporting ring 7 is matched with the limiting groove 901 to limit the floating range of the main shaft 1 and the main shaft head fixing sleeve 6, and meanwhile, when the gas in the gas containing space 16 extrudes each plunger 4, the limiting groove 901 can ensure that the main shaft 1 is positioned in the middle of the shell 2 through limiting the supporting ring 7.
Further, as shown in FIG. 1, the cross-section of the retention groove 901 may be, but is not limited to, a "V" shape or a trapezoid shape.
In an alternative embodiment of the present invention, as shown in fig. 1, at least one positioning groove (not shown) is formed on an inner wall of the housing 2, the position of the positioning groove is opposite to the position of the outer edge of the first boss 601, at least one positioning bead 8 is disposed between the housing 2 and the spindle fixing sleeve 6, the positioning bead 8 is fixedly connected to the outer edge of the first boss 601, and the positioning bead 8 can be movably embedded in the positioning groove. Through the cooperation of locating ball 8 and constant head tank, carry on spacingly to the home range between fixed cover 6 of main shaft and shell 2, guarantee that main shaft 1 can only carry out axial displacement in shell 2, avoid main shaft 1 to take place to rotate for between the shell 2.
In an alternative embodiment of the present invention, as shown in fig. 1, a cylindrical cushion cover 5 is disposed in the plunger mounting hole along the axial direction thereof, the outer wall of the cushion cover 5 is attached to the inner wall of the plunger mounting hole, the plunger 4 is slidably disposed in the cushion cover 5, and the outer wall of the plunger 4 is attached to the inner wall of the cushion cover 5, so as to protect the plunger 4 by the cushion cover 5.
Further, the cushion cover 5 can be made of copper, but is not limited to the copper.
In an alternative embodiment of the present invention, as shown in fig. 1, an "O" shaped first sealing ring 10 is disposed between the threaded sleeve 9 and the main shaft fixing sleeve 6, the first sealing ring 10 is compressed between an inner wall of one end of the threaded sleeve 9 away from the plunger mounting ring 3 and an outer wall of the main shaft fixing sleeve 6, and the sealing arrangement between the threaded sleeve 9 and the main shaft fixing sleeve 6 is ensured by the first sealing ring 10.
In an alternative embodiment of the present invention, as shown in fig. 1, the outer wall of the plunger mounting ring 3 is screwed with the inner wall of the housing 2, an "O" shaped second sealing ring 11 is arranged between the outer edge of the plunger mounting ring 3 and the inner wall of the housing 2, and an "O" shaped third sealing ring 12 is arranged between the inner edge of the plunger mounting ring 3 and the inner wall of the housing 2. The second sealing ring 11 and the third sealing ring 12 ensure that the shell 2 and the plunger mounting ring 3 are arranged in a sealing manner, and the second sealing ring 11 and the third sealing ring 12 are matched with the first sealing ring 10 to ensure that the first suspension space 15, the second suspension space 17 and the third suspension space 18 are closed spaces, so that the main shaft 1 can float in the first suspension space 15, the second suspension space 17 and the third suspension space 18.
In this embodiment, as shown in fig. 1, an annular second boss 201 is disposed on an inner edge of one end of the housing 2 away from the thread bushing 9, the second sealing ring 11 is compressed between an outer edge of the plunger mounting ring 3 and the second boss 201, and the third sealing ring 12 is compressed between an inner edge of the plunger mounting ring 3 and the second boss 201.
Further, the first seal ring 10, the second seal ring 11 and the third seal ring 12 may be, but not limited to, rubber seal rings.
Before the floating polishing device performs polishing work, firstly, an air path of the device is ventilated (namely, an external air supply device is controlled to supply air to an air path joint 14), air is kept to be supplied to an air containing chamber 16 continuously, the air is filled in the air containing chamber 16, and eight plungers 4 are uniformly arranged on a plunger mounting ring 3 and can slide along the axial direction of the plunger mounting ring 3. Due to the pressure action of gas, each plunger 4 is ejected out of the corresponding plunger mounting hole in a sliding manner, the end part of each plunger 4 is abutted against one end of the main shaft fixing sleeve 6, and because the gas pressure borne by each plunger 4 is the same, the supporting force of each plunger 4 on the main shaft fixing sleeve 6 is the same, the other end of the main shaft fixing sleeve 6 is fixedly provided with a supporting ring 7, when the main shaft fixing sleeve 6 bears the supporting force of each plunger 4, the supporting ring 7 can be automatically aligned in the limiting groove 901, and the main shaft 1 is located at the middle position and is kept immovable; when the polishing head touches a convex position on the outer contour of a workpiece, the main shaft 1 drives the main shaft fixing sleeve 6 to deflect at a certain angle, pressure is transmitted to the plunger 4 on one side through the polishing head, the main shaft 1 and the main shaft fixing sleeve 6 in sequence, the corresponding plunger 4 is compressed back into the plunger mounting hole due to compressibility of gas, and the main shaft 1 realizes flexible floating. A positioning bead 8 is arranged between the main shaft fixing sleeve 6 and the shell 2, the positioning column 8 can be movably embedded in a positioning groove formed in the inner wall of the shell 2, so that the main shaft positioning sleeve 6 and the shell 2 cannot rotate relatively, and the main shaft positioning sleeve 6 can only realize radial floating on the inner side of the shell 2. In addition, the supporting force of the plunger 4 on the main shaft positioning sleeve 6 can be controlled by controlling the air supply amount, so that the floating prestress of the polishing head is controlled. When the polishing head is not in contact with the raised position on the outer contour of the workpiece, the pressure of the gas in the gas containing space 16 pushes each plunger 4 to restore the original position, the support ring 7 automatically aligns in the limiting groove 901, and the main shaft 1 restores to the middle position.
From the above description, it can be seen that the present invention achieves the following technical effects:
one, this grinding device that floats simple structure, it is simple and convenient to control, through aerifing in the confined space between to shell 2 and main shaft 1, can realize main shaft 1 and float in shell 2, when the polishing head contacts with the protruding position on the work piece outline, main shaft 1 can drive the polishing head and take place the incline of certain angle, can effectively avoid the polishing head to lead to the polishing head because of the pressure increase suddenly with work piece contact position, the damage of main shaft 1 or work piece, avoid the dead condition of motor card to take place, improve greatly and to the controllability of polishing head and main shaft 1 position, reach the best effect of polishing to the work piece.
Secondly, all plunger mounting holes in the floating polishing device are uniformly distributed along the circumferential direction of the plunger mounting ring 3, so that the plungers 4 are uniformly arranged along the circumferential direction of the plunger mounting ring 3, and the requirement that the main shaft 1 can incline in any direction can be met.
Third, a support ring 7 is arranged on a first boss 601 of a main shaft fixing sleeve 6 in the floating polishing device, a limit groove 901 is formed in a threaded sleeve 9, the support ring 7 can be movably embedded in the limit groove 901, the floating range of the main shaft 1 and the main shaft head fixing sleeve 6 is limited by matching the support ring 7 with the limit groove 901, and the main shaft 1 can be ensured to be located at the middle position of the shell 2 under the supporting force of each plunger 4.
Fourthly, seted up the constant head tank on the inner wall of shell 2 among this grinding device floats, be provided with location pearl 8 on the fixed cover 6 of main shaft, location pearl 8 can inlay movably and locate in the constant head tank, through the cooperation of location pearl 8 and constant head tank, can carry on spacingly to the home range between the fixed cover 6 of main shaft and the shell 2, guarantee that main shaft 1 can only carry out axial displacement in shell 2, avoid main shaft 1 to take place to rotate for between the shell 2, ensure the device's normal work.
The above description is only a preferred embodiment of the present application and is not intended to limit the present application, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, improvement and the like made within the spirit and principle of the present application shall be included in the protection scope of the present application.
Claims (10)
1. The utility model provides a grinding device floats, its characterized in that, grinding device floats includes shell (2), the fixed cover of main shaft (6), thread bush (9) and floats locate the inboard main shaft (1) of shell (2), wherein:
the outer shell (2) is of a cylindrical structure, the axial direction of the outer shell is arranged along the horizontal direction, a plunger mounting ring (3) is fixedly arranged in the outer shell (2) along the circumferential direction of the outer shell, a plurality of plunger mounting holes are formed in the plunger mounting ring (3) along the axial direction of the plunger mounting ring, an air containing space (16) communicated with each plunger mounting hole is reserved between the plunger mounting ring (3) and the inner wall of the outer shell (2), an air path joint (14) connected with an external air supply device is installed on the outer shell (2), the air path joint (14) is communicated with the air containing space (16), a plunger (4) can be slidably arranged in each plunger mounting hole along the axial direction of the plunger mounting hole, the inner part of the outer shell (2) is communicated with the inner part of the plunger mounting ring (3) to form an inner hole, and the main shaft (1) can be movably arranged in the inner hole, a first suspension space (15) for the main shaft (1) to float is reserved between the outer wall of the main shaft (1) and the inner wall of the inner hole;
the spindle fixing sleeve (6) and the threaded sleeve (9) are both of a cylindrical structure arranged along the axial direction of the shell (2), the spindle fixing sleeve (6) is fixedly sleeved on the outer side of the spindle (1), the threaded sleeve (9) is sleeved on the outer side of the spindle fixing sleeve (6), the threaded sleeve (9) and the spindle fixing sleeve (6) can be movably and hermetically connected, a second suspension space (17) and a third suspension space (18) for floating the spindle (1) are respectively reserved between the inner wall of the threaded sleeve (9) and the outer wall of the spindle fixing sleeve (6) and between the inner wall of the shell (2) and the inner wall of the spindle fixing sleeve (6), and the first suspension space (15), the second suspension space (17) and the third suspension space (18) are communicated;
the main shaft fixing sleeve (6) is close to one end of the plunger mounting ring (3) and opposite to the plungers (4), the air path joint (14) supplies air to the air containing space and extrudes one end of each plunger (3), so that the other end of each plunger (3) can slide from the corresponding plunger mounting ring (3) to extend into the third suspension space (18) and abut against the main shaft fixing sleeve (6).
2. The floating grinding device as claimed in claim 1, characterized in that the head and the tail of the main shaft (1) respectively extend out from two ends of the outer shell (2), the head of the main shaft (1) is used for connecting a grinding head, the tail of the main shaft (1) is sleeved with a protective cover (13), and the edge of the protective cover (13) is connected with the outer wall of the outer shell (2).
3. The floating grinding device as claimed in claim 1, wherein a first boss (601) is arranged at one end of the spindle fixing sleeve (6) close to the plunger mounting ring (3) along the circumferential direction of the spindle head fixing sleeve (6), a limiting groove (901) is formed in the threaded sleeve (9) along the circumferential direction of the threaded sleeve (9), the position of the limiting groove (901) is opposite to the position of the first boss (601), a support ring (7) is arranged between the spindle fixing sleeve (6) and the threaded sleeve (9), the support ring (7) is fixedly connected with the first boss (601) along the circumferential direction of the spindle fixing sleeve (6), and the support ring (7) can be movably embedded in the limiting groove (901).
4. The floating polishing device as claimed in claim 3, wherein the inner wall of the housing (2) is provided with at least one positioning groove, the positioning groove is opposite to the outer edge of the first boss (601), at least one positioning bead (8) is disposed between the housing (2) and the spindle fixing sleeve (6), the positioning bead (8) is fixedly connected with the outer edge of the first boss (601), and the positioning bead (8) can be movably embedded in the positioning groove.
5. The floating polishing device as claimed in claim 1, wherein a pad (5) is disposed in the plunger mounting hole along an axial direction thereof, an outer wall of the pad (5) is fitted to an inner wall of the plunger mounting hole, the plunger (4) is slidably disposed in the pad (5), and an outer wall of the plunger (4) is fitted to an inner wall of the pad (5).
6. The floating grinding device as claimed in claim 1, characterized in that a first sealing ring (10) is arranged between the threaded sleeve (9) and the main shaft fixing sleeve (6), and the first sealing ring (10) is compressed between the inner wall of the end of the threaded sleeve (9) far away from the plunger mounting ring (3) and the outer wall of the main shaft fixing sleeve (6).
7. The floating sanding device of claim 1, wherein the plunger mounting holes are evenly arranged along the circumference of the plunger mounting ring (3).
8. The floating grinding device as claimed in claim 1, characterized in that the outer wall of the plunger mounting ring (3) is in threaded connection with the inner wall of the housing (2), a second sealing ring (11) is arranged between the outer edge of the plunger mounting ring (3) and the inner wall of the housing (2), and a third sealing ring (12) is arranged between the inner edge of the plunger mounting ring (3) and the inner wall of the housing (2).
9. The floating grinding device as claimed in claim 8, characterized in that an annular second boss (201) is provided on the inner edge of the end of the housing (2) away from the threaded sleeve (9), the second sealing ring (11) is compressed between the outer edge of the plunger mounting ring (3) and the second boss (201), and the third sealing ring (12) is compressed between the inner edge of the plunger mounting ring (3) and the second boss (201).
10. A floating milling device as claimed in claim 1, characterized in that the spindle attachment sleeve (6) is connected to the spindle (1) by means of a plurality of bolts.
Priority Applications (1)
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