CN112720204A - Seal head inner wall grinding device for high-pressure gas cylinder aluminum alloy inner container - Google Patents
Seal head inner wall grinding device for high-pressure gas cylinder aluminum alloy inner container Download PDFInfo
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- CN112720204A CN112720204A CN202011522641.5A CN202011522641A CN112720204A CN 112720204 A CN112720204 A CN 112720204A CN 202011522641 A CN202011522641 A CN 202011522641A CN 112720204 A CN112720204 A CN 112720204A
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- Prior art keywords
- grinding
- wall
- seal head
- head inner
- main shaft
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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
- B24B27/00—Other grinding machines or devices
- B24B27/0076—Other grinding machines or devices grinding machines comprising two or more grinding tools
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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
- B24B27/00—Other grinding machines or devices
- B24B27/0092—Grinding attachments for lathes or the like
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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
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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
- B24B41/02—Frames; Beds; Carriages
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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
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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
- B24B47/00—Drives or gearings; Equipment therefor
- B24B47/20—Drives or gearings; Equipment therefor relating to feed movement
Abstract
The invention provides a seal head inner wall grinding device for a high-pressure gas cylinder aluminum alloy liner, which combines the seal head inner wall grinding device and an outer circle grinding device on one device, and can respectively grind the inner surface and the outer surface of the liner under one-time clamping; the outer circle grinding device can grind the pipe fittings with rusty or scratched surfaces, so that the manufacturing efficiency and the appearance quality of finished products are not influenced in the process of manufacturing the pipe fittings into finished products; the end socket inner wall polishing device can find scratches or defects of inner surfaces at different positions at any time through an industrial camera; through the connecting mechanism and the circuit arranged in the seal head inner wall grinding main shaft, the grinding wheel can rotate at a high speed under the driving of a high-speed motor, the high-speed grinding of the surface is realized, and the grinding quality is ensured; the circumferential small-sector grinding is realized, the problems of deep groove grinding, local over grinding and the like caused by point grinding are effectively avoided, and the grinding surface is smooth and continuous.
Description
Technical Field
The invention belongs to the technical field of high-pressure containers, and particularly relates to a seal head inner wall grinding device for an aluminum alloy liner of a high-pressure gas cylinder.
Background
The high-pressure gas cylinder is widely used in various industries of national economy such as industrial and mining production, construction, transportation, ocean, aviation, medical treatment, military and the like. The capacity, wall thickness, and fabrication process and materials of the high pressure gas cylinder all affect the performance of the high pressure gas cylinder. Natural gas and hydrogen are clean energy sources that are heavily developed and widely used worldwide. The use of 20-35MP high pressure gas cylinders for storage and transportation and the use of Compressed Natural Gas (CNG), compressed hydrogen and other compressed industrial gases are the primary means of mobile use of these gases.
At present, the carbon fiber fully-wound high-pressure gas cylinder with the aluminum alloy liner has a plurality of advantages, gradually replaces the traditional steel gas cylinder, and becomes the mainstream product of the high-pressure gas cylinder in the world. Its advantages are as follows:
(1) the weight is greatly reduced; the gas cylinder compositely wound by the aluminum alloy liner has the material thickness of 50-70% of that of the steel cylinder and lower density under the same performance, so that the weight of the gas cylinder is only 35-40% of that of the traditional steel cylinder.
(2) The damage safety is good; the aluminum alloy inner container carbon fiber fully-wound gas cylinder is reinforced by the aluminum alloy inner container and the carbon fiber composite material, fibers per square centimeter are as many as thousands of fibers, when the gas cylinder is overloaded and a small amount of fibers are broken, the load of the gas cylinder can be rapidly distributed on the fibers which are not damaged, so that the gas cylinder cannot lose the bearing capacity in a short period or even a long period, and the safety is greatly improved.
(3) The shock absorption is good; the interface of the fiber and the resin matrix in the composite material has shock absorption capacity, good shock damping and high sound-shock fatigue resistance.
(4) Compared with the complex process required by a seamless steel gas cylinder, the fiber winding process is more flexible, easy to change, simpler in process, easy to realize automation and far lower in energy consumption than the production process of the steel gas cylinder.
For example, the aluminum alloy inner container carbon fiber fully-wound gas cylinder with the outer diameter of phi 300-850mm and the length of not more than 5m is mainly used as a large-volume high-pressure gas cylinder for moving large-scale natural gas vehicles, such as CNG fuel gas cylinders for modular CNG gas cylinder groups, storage and transportation gas cylinders and the like.
Because the product is used in a high-pressure environment for a long time and needs to be repeatedly inflated and deflated, the requirement on the fatigue performance of the aluminum alloy liner is extremely high, and any form of scratch with the depth of more than 0.05mm on the inner surface is not allowed; even more in no way allowing micro-cracks to exist. However, in the closing process, the material of the head sealing section is severely deformed under high-temperature heating, and the inner surface of the material is easy to generate defects such as loose tissue, orange-peel tissue, radial cracks and the like; the outer surface is easy to have defects such as local bubbles, surface stacking, surface microcracks and the like. The defects need to be processed in time, otherwise, the product cannot be scrapped through water pressure and air tightness detection, or the product is damaged or even exploded due to the fact that the product cannot meet fatigue requirements in the using process, and the method is extremely dangerous. Therefore, special visual detection tools are needed to detect the inner containers of the gas cylinders one by one, and special grinding equipment is used for grinding the inner and outer surfaces of the end sockets of the aluminum alloy inner containers.
At present, special aluminum alloy inner container end socket inner and outer wall grinding equipment is not available, and a traditional grinding machine cannot continuously grind the outer surface of a gas cylinder with an ellipsoidal, butterfly-shaped and spherical head; the inner surface of the sealing head section with the inner diameter of only dozens of millimeters of the bottle mouth cannot be polished.
Therefore, there is a need to provide an improved solution to the above-mentioned deficiencies of the prior art.
Disclosure of Invention
The invention aims to provide a device for polishing the inner wall of a seal head of an aluminum alloy liner of a high-pressure gas cylinder, which can be used for polishing the defects on the inner surface and the outer surface of the seal head of the aluminum alloy liner of the high-pressure gas cylinder after closing-up spinning, so that the manufacturing efficiency and the appearance quality of a finished product are not influenced in the process of manufacturing the high-pressure gas cylinder into the finished product. Meanwhile, the outer surface of the liner can be polished to meet the requirements of special products.
In order to achieve the above purpose, the invention provides the following technical scheme:
the utility model provides a head inner wall grinding device for high pressure gas cylinder aluminum alloy inner bag, head inner wall grinding device includes: the device comprises a tailstock, an axial movement mechanism, an axial driving motor, an up-down feeding mechanism, an up-down feeding driving motor, a seal head inner wall grinding main shaft, a seal head inner wall grinding motor, a transmission mechanism and a grinding wheel;
the axial movement mechanism is arranged on the frame; the axial motion mechanism is connected with the tailstock, the axial driving motor is connected with the axial motion mechanism, and the axial motion mechanism drives the whole seal head inner wall grinding mechanism to move axially along a machine tool according to the speed and the position set by a numerical control system under the drive of the axial driving motor;
the up-down feeding mechanism is arranged on the tailstock, and the up-down feeding driving motor is connected with the up-down feeding mechanism;
the grinding main shaft for the inner wall of the end socket is of a hollow structure and is provided with a hollow inner cavity;
the first end of the seal head inner wall grinding main shaft is connected with the grinding wheel, the second end of the seal head inner wall grinding main shaft is connected with the up-and-down feeding mechanism, the up-and-down feeding mechanism is driven by the up-and-down feeding motor, the seal head inner wall grinding main shaft and the grinding wheel at the first end of the seal head inner wall grinding main shaft are driven to move up and down according to the speed and the position set by a numerical control system, and the position control precision is lower than 0.02 mm;
the transmission mechanism is installed in the hollow inner cavity of the seal head inner wall grinding main shaft, one end of the transmission mechanism is connected with the grinding wheel, the other end of the transmission mechanism is connected with the seal head inner wall grinding motor, the seal head inner wall grinding motor can stably transmit the high-speed rotation to the grinding wheel, the grinding wheel can rotate at a high speed, under the driving of the upper feeding mechanism and the lower feeding mechanism, scratches on the inner surface of the liner are ground according to the set feeding speed and position, and the grinding depth is adjustable.
In the device for grinding the inner wall of the end socket, preferably, when the inner wall of the end socket is ground, the grinding main shaft of the inner wall of the end socket swings at a set speed within the range of-5 degrees to +5 degrees, so that smooth transition of a grinding area is ensured.
Preferably, the seal head inner wall grinding mechanism comprises an industrial camera and an observer, wherein the industrial camera is mounted at the front end of the grinding wheel and is connected with the observer through a line arranged in the hollow seal head inner wall grinding main shaft, and the industrial camera is used for observing and determining a scratch area and verifying the grinding effect.
In the device for grinding the inner wall of the end socket, preferably, the industrial camera is provided with a lighting device.
Compared with the closest prior art, the technical scheme provided by the invention has the following excellent effects:
the end socket inner wall grinding device provided by the invention combines end socket inner wall grinding and outer circle grinding on one device, and can continuously or respectively grind linear and curved sections of an inner container under one-time clamping; the inner wall of the inner container end socket can be continuously or locally polished under one-time clamping.
The outer circle grinding part in the device can grind the inner container with a bump or scratch on the surface, so that the manufacturing efficiency and the appearance quality of a finished product are not influenced in the process of manufacturing the inner container into the finished product; the polished part of the inner wall of the end socket can find scratches or defects of inner surfaces at different positions at any time through an industrial camera; through a connecting mechanism and a circuit arranged in the seal head inner wall grinding main shaft, a grinding wheel can rotate at a high speed under the drive of a high-speed motor, the grinding main shaft rotates and the tailstock is axially fed for two-shaft interpolation, and the rotation or swing of the machine tool main shaft is combined, so that the high-speed grinding of the inner surface of the liner seal head is realized, and the grinding quality is ensured.
The grinding of a small circumferential sector is realized by combining the small-range swing of the main shaft with the high-speed rotation of the grinding wheel and the up-and-down feeding of the grinding wheel, so that the problems of deep grooves, local over-grinding and the like caused by point-shaped grinding are effectively avoided, and the grinding surface is smooth and continuous; the grinding can be continuously carried out along the axial direction of the curved surface of the end socket under the control of a numerical control system through programming or manual operation, the main shaft can always swing at the moment, and the feeding can realize the one-time quick grinding of long defects.
Drawings
The accompanying drawings, which are incorporated in and constitute a part of this application, illustrate embodiments of the invention and, together with the description, serve to explain the invention and not to limit the invention. Wherein:
fig. 1 is a schematic structural view of a device for grinding the inner wall and the outer wall of a seal head in the embodiment of the invention;
FIG. 2 is an axial schematic view of an outer circle grinding mechanism according to an embodiment of the present invention;
FIG. 3 is a radial schematic view of an outer grinding mechanism according to an embodiment of the present invention;
FIG. 4 is a schematic structural view of a clamping mechanism according to an embodiment of the present invention;
FIG. 5 is a schematic structural diagram of a second centering support mechanism according to an embodiment of the invention;
fig. 6 is a schematic structural view of a seal head inner wall grinding mechanism according to an embodiment of the invention.
In the figure: 1. a spindle motor; 2. a clamping mechanism; 21. a contact block; 22. a front claw; 23. a front jaw fixing body; 3. a first centering support mechanism; 4. an outer circle grinding mechanism; 41. an abrasive belt; 42. a connecting rod; 43. grinding the motor on the outer circle; 44. a transverse feed motor; 45. a side bed body; 46. a dust collector connector; 47. a dust collecting tank; 5. a second centering support mechanism; 51. a moving block; 52. supporting a roller; 53. a support body; 54. a second centering linkage mechanism; 55. a second base; 6. a seal head inner wall grinding mechanism; 62. a tailstock; 63. an up-and-down feeding mechanism; 64. a motor is polished on the inner wall of the end socket; 65. grinding the inner wall of the end socket of the main shaft; 66. a grinding wheel; 67. an industrial camera; 7. a main shaft body; 8. and a frame.
Detailed Description
The present invention will be described in detail below with reference to the embodiments with reference to the attached drawings. It should be noted that the embodiments and features of the embodiments may be combined with each other without conflict.
In the description of the present invention, the terms "longitudinal", "lateral", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, which are for convenience of description of the present invention only and do not require that the present invention must be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention. The terms "connected" and "connected" used herein should be interpreted broadly, and may include, for example, a fixed connection or a detachable connection; they may be directly connected or indirectly connected through intermediate members, and specific meanings of the above terms will be understood by those skilled in the art as appropriate.
As shown in fig. 1 to 6, according to an embodiment of the present invention, there is provided a head inner and outer wall grinding device for an aluminum alloy liner of a high pressure gas cylinder, the head inner and outer wall grinding device includes a frame 8, and a spindle mechanism, a first centering support mechanism 3, an outer circle grinding mechanism 4, a second centering support mechanism 5 and a head inner wall grinding mechanism 6, which are sequentially disposed on the frame 8.
And the rack 8 is used for supporting the outer part of the end socket inner and outer wall grinding device.
The main shaft mechanism is arranged at one end of the frame 8 and comprises a main shaft motor 1, a main shaft body 7 and a clamping mechanism 2; the clamping mechanism 2 is used for clamping the liner, and the clamping mechanism 2 is arranged at one end close to the first centering support mechanism 3; the spindle motor 1 is connected with the spindle body 7 and is used for driving the clamping mechanism 2 on the spindle body 7 to rotate, and further driving the inner container to rotate.
The centering support mechanism comprises a first centering support mechanism 3 and a second centering support mechanism 5, and the first centering support mechanism 3 and the second centering support mechanism 5 are used for supporting the liner and ensuring that the center of the liner coincides with the center of the main shaft body 7.
The outer circle grinding mechanism 4 is used for grinding the outer surface of the inner container and the outer surface of the straight line section.
And the end socket inner wall grinding mechanism 6 is used for grinding the inner surface of the liner end socket.
In a specific embodiment of the present invention, the outer circle grinding mechanism 4 includes a side bed body 45, a first rack and pinion mechanism, an axial feed motor, a transverse feed mechanism, a transverse feed motor 44, a worm gear rotation mechanism, and an outer circle grinding unit;
the side lathe bed 45 axially moves along the end socket inner and outer wall grinding device under the drive of the axial feed motor through a first gear rack mechanism, and transversely moves along the end socket inner and outer wall grinding device under the control of the transverse feed motor 44 through a transverse feed mechanism; the worm gear mechanism is driven by a motor to rotate; the three actions can be controlled in a programmable way to realize continuous interpolation;
the outer circle grinding unit is arranged on one side of the side lathe bed 45 and is used for continuously grinding the outer surface of the inner container.
In the specific embodiment of the invention, the outer circle grinding unit comprises an abrasive belt 41 mounting mechanism, an outer circle grinding motor 43, a dust collecting tank 47 and a dust cover; the excircle grinding motor 43 drives the installation mechanism of the abrasive belt 41 to rotate; the dust collecting tank 47 is arranged below the mounting mechanism of the abrasive belt 41 and used for collecting dust generated in the coping process; the dust cover wraps the abrasive belt 41 mounting mechanism integrally, only the surface of the abrasive belt contacting with the liner is exposed, so that the outer surface of the liner can be ground conveniently, and a large amount of dust can be prevented from flying.
A dust collector connecting port 46 is arranged on one side of the dust collecting tank 47, the dust collector connecting port 46 is used for connecting a dust collector, and the dust collector is used for sucking dust in the dust collecting tank 47; the dust collector is a flared high-power dust collector, the outer side of the inner and outer wall grinding devices of the fixed seal head of the dust collector is provided, and the pipeline of the dust collector moves axially along with the outer circle grinding mechanism 4.
The installation mechanism of the abrasive belt 41 comprises an abrasive belt 41, an upper wheel, a lower wheel and a connecting rod 42, the connecting rod 42 is connected with the frame 8, the upper wheel is in bolted connection with the connecting rod 42 through a spring mechanism and a pressing device, an outer circle grinding motor 43 is connected with and drives the lower wheel to rotate, and the lower wheel is connected with the upper wheel through the abrasive belt 41 and drives the upper wheel to rotate.
The abrasive belt 41 is obliquely arranged, so that the contact area between the abrasive belt 41 and the outer surface of the liner can be increased as much as possible, the grinding efficiency is improved, and dust is conveniently removed. When the sanding belt 41 needs to be replaced, the screws of the pressing device are loosened, the upper wheel is pressed down, the sanding belt 41 is taken out and replaced, and the sanding belt 41 is reinstalled.
In the embodiment of the present invention, the head inner wall grinding mechanism 6 includes a tailstock 62, an axial movement mechanism, an axial driving motor, an up-down feeding mechanism 63, an up-down feeding driving motor, a head inner wall grinding spindle 65, a head inner wall grinding motor 64, a transmission mechanism, and a grinding wheel 66.
The axial movement mechanism is arranged on the frame 8; the axial motion mechanism is connected with the tailstock 62, the axial driving motor is connected with the axial motion mechanism, and the axial motion mechanism drives the whole seal head inner wall grinding mechanism 6 to move axially along the machine tool according to the speed and the position set by the numerical control system under the drive of the axial driving motor.
The head inner wall coping spindle 65 is of a hollow structure and has a hollow inner cavity.
One end of the seal head inner wall grinding spindle 65 is connected with a grinding wheel 66, the other end of the seal head inner wall grinding spindle 65 is connected with an up-down feeding mechanism 63, the up-down feeding mechanism 63 is arranged on the tailstock 62, an up-down feeding driving motor is connected with the up-down feeding mechanism 63, the up-down feeding motor drives the up-down feeding mechanism 63, the seal head inner wall grinding spindle 65 and the grinding wheel 66 at one end are driven to move up and down according to the speed and position set by a numerical control system, and the position control accuracy is lower than 0.02 mm.
The transmission mechanism is arranged in a hollow inner cavity of the seal head inner wall grinding main shaft 65, one end of the transmission mechanism is connected with the grinding wheel 66, the other end of the transmission mechanism is connected with the seal head inner wall grinding motor 64, the seal head inner wall grinding motor 64 can be stably transmitted to the grinding wheel 66 in a high-speed rotating mode, the grinding wheel 66 can rotate at a high speed, under the driving of the upper and lower feeding mechanisms 63, scratches on the inner surface of the liner are ground according to the set feeding speed and position, and the grinding depth can be adjusted at will.
When the inner wall of the end socket is polished, the polishing main shaft 65 of the inner wall of the end socket swings at a set speed within the range of minus 5 degrees to plus 5 degrees, and smooth transition of a polishing area is ensured.
In the embodiment of the present invention, the seal head inner wall grinding mechanism 6 further includes an industrial camera 67 and an observer, the industrial camera 67 is installed at the front end of the grinding wheel 66, and is connected to the observer through a line arranged in the hollow seal head inner wall grinding spindle 65, so as to observe and determine a scratch area, and verify the grinding effect.
According to the invention, the observation mechanism is positioned outside the hollow main shaft of the machine tool and comprises an industrial camera 67, a fixed rod and an observer, wherein the fixed rod is a hollow handheld movable part and can enter the gas cylinder through the hollow main shaft of the machine tool and the opening of the non-polished end of the gas cylinder; the industrial camera 67 is installed at the front end of the fixing rod, is connected with the observer through a line arranged inside the fixing rod, and is used for observing and determining a scratch area and verifying the polishing effect.
Preferably, the industrial camera 67 is self-illuminating.
In the invention, the abrasive cloth flap wheel is preferably selected for polishing the aluminum alloy inner container; for polishing the aluminum alloy inner container, a wire drawing wheel is preferred; of course, in other embodiments, the grinding wheel 66 may be a conventional grinding wheel.
According to the invention, the end socket inner wall grinding mechanism 6 comprises a tailstock 62, an axial movement mechanism, an axial driving motor, an end socket inner wall grinding support rod and an end socket inner wall grinding unit;
the axial movement mechanism is arranged on the machine tool body;
the axial motion mechanism is connected with the tailstock 62, the axial driving motor is connected with the axial motion mechanism, and the axial motion mechanism drives the whole seal head inner wall grinding mechanism 6 to move axially along the machine tool according to the speed and the position set by the numerical control system under the drive of the axial driving motor;
the end socket inner wall grinding support rod is of a hollow structure, one end of the end socket inner wall grinding support rod is connected with the tailstock 62, the end of the end socket inner wall grinding support rod is provided with an end socket inner wall grinding unit, the end socket inner wall grinding unit is designed to be superposed with the central line of a machine tool spindle, the position precision of the end socket inner wall grinding support rod is mainly guaranteed by processing, and meanwhile, the end socket inner wall grinding support rod;
the head inner wall grinding unit consists of a head inner wall grinding unit feeding mechanism, a head inner wall grinding unit feeding mechanism driving motor, a small support rod, a flexible shaft, a connecting rod, a grinding head support rod, a damping device and a grinding head, wherein the small support rod, the head inner wall grinding unit feeding mechanism and the head inner wall grinding unit feeding mechanism driving motor are all arranged in a hollow inner cavity of the head inner wall grinding support rod, one end of the small support rod is fixed on the tail base 62, and the other end of the small support rod is connected with the grinding head support rod through a hinge joint; one end of the flexible shaft sequentially penetrates through the hollow inner cavity of the small support rod, is attached to the grinding head support rod, penetrates through the damping device and is connected with the grinding head, and the other end of the flexible shaft is connected with a driving motor arranged on the tailstock 62, so that the motor can drive the grinding head to rotate at a high speed under the drive of a program instruction; the connecting rod is respectively connected with a sliding body of the feeding mechanism of the end enclosure inner wall coping unit and a sliding body on the grinding head supporting rod; the damping device is positioned at the front end of the grinding head support rod, and the other end of the damping device is connected with the grinding head.
The feeding mechanism of the seal head inner wall grinding unit consists of a sliding body and a gear rack mechanism, wherein the sliding body is of a hollow structure, is sleeved outside the small support rod and is positioned in front of the seal head inner wall grinding support rod, and moves axially along the small support rod under the driving of a drive motor of the seal head inner wall grinding unit feeding mechanism which is also fixed on the inner wall of the seal head inner wall grinding support rod through a size rack mechanism connected with the sliding body, the grinding head support rod is driven by a connecting rod to turn towards a tailstock 62 in a fan shape, the turning angle of the grinding head support rod is in a linear relation with the axial feeding position of the sliding body, and the turning angle is preset in a numerical control system through calculation, so that the numerical control system only.
According to the invention, when the aluminum alloy inner container of the high-pressure gas cylinder is arranged on the main shaft of the machine tool, the opening of the end socket at one end faces to the tailstock 62. At the moment, when the sliding body returns to the limit position far away from the machine tool spindle, the connecting rod is attached to the grinding head supporting rod and the small supporting rod, so that the grinding head, the damping device, the grinding head supporting rod, the connecting rod and the small supporting rod are in a straight line, the axial driving motor drives the tailstock 62, the end socket inner wall polishing supporting rod and the end socket inner wall polishing unit mounted on the tailstock to axially feed integrally, the grinding head, the damping device, the grinding head supporting rod, the connecting rod and the small supporting rod enter the gas cylinder through the gas cylinder mouth, and the continuous or local polishing of the inner surface of the end socket is realized through the interpolation of the axial movement and the overturning movement of the tailstock 62 and the continuous rotation or swing of the.
In the embodiment of the present invention, the clamping mechanism 2 includes a front jaw fixing body 23, a front jaw 22, a contact block 21; the front clamping jaw fixing body 23 is arranged at the front end of the main shaft body 7; a plurality of front clamping jaws 22 are arranged on the front clamping jaw fixing body 23, and the contact block 21 is connected with the front clamping jaws 22; the contact block 21 is used for clamping the inner container.
In the specific embodiment of the invention, the main shaft mechanism is used for fixing the inner container and rotating the inner container under the driving of the main shaft motor 1, the rotation can be continuous rotation in the positive and negative directions, and the purpose of the rotation is used for continuously grinding the inner surface and the outer surface; the rotation can also swing within the range of minus 5 degrees to plus 5 degrees, the requirement of inner surface grinding is met, and the swing speed is adjustable.
In the specific embodiment of the present invention, the centering support mechanism comprises a first centering support mechanism 3 and a second centering support mechanism 5; the first centering support mechanism 3 comprises a first base, a second gear rack mechanism, a first support mechanism and a first centering linkage mechanism; the first base is arranged on the frame 8; the second gear rack mechanism is arranged below the rack 8 and on the side surface of the device for grinding the inner wall and the outer wall of the seal head.
The first base realizes the movement of the first supporting mechanism along the axial direction of the end socket inner and outer wall grinding device through the second gear rack mechanism so as to be suitable for workpieces with different lengths.
The first support mechanism comprises a first support module and a second support module, and is oppositely arranged on the first base; the first supporting module and the second supporting module respectively comprise a supporting body 53, a moving block 51 and a supporting roller 52, the supporting roller 52 is arranged on the moving block 51, and the moving block 51 is arranged on the supporting body 53; the support body 53 is arranged on the first base and connected with the first centering linkage mechanism; the first centering linkage mechanism drives the first support module and the second support module to move relatively, namely, the first support module and the second support module move towards the center or away from the center at the same time.
In the embodiment of the present invention, the second centering support mechanism 5 includes a second base 55, a second support mechanism, and a second centering linkage 54; the second base 55 is fixedly mounted on the frame 8 and cannot move along the axial direction of the end socket inner and outer wall grinding device.
The second support mechanism also comprises a first support module and a second support module, and is oppositely arranged on the second base 55; the first supporting module and the second supporting module respectively comprise a supporting body 53, a moving block 51 and a supporting roller 52, the supporting roller 52 is arranged on the moving block 51, and the moving block 51 is arranged on the supporting body 53; the supporting body 53 is arranged on the second base 55 and connected with the second centering linkage 54; the second centering linkage 54 drives the first support module and the second support module to move relatively, that is, the first support module and the second support module move toward the center or away from the center at the same time.
In the embodiment of the present invention, a straight ruler with a precision of 1mm is provided on the supporting body 53 for determining the lateral position of the moving block 51 and fixed by a rack or a screw. The moving block 51 is mounted on the support body 53 by means of a rack or screw. The moving block 51 is provided with a plurality of supporting grooves for directly mounting the support rollers 52 so as to be suitable for supporting the liners within different diameter ranges. The support rollers 52 are mounted on the support grooves of the support body 53 through bearings and rotation shafts.
In the embodiment of the present invention, the first supporting module and the second supporting module which are oppositely disposed are respectively connected to the first centering linkage mechanism or the second centering linkage mechanism 54, which can realize simultaneous movement toward the center or away from the center, and the synchronization of the two supporting modules simplifies the difficulty of centering adjustment. Through a conversion equation of the relative positions of the product diameter and the two support modules, the positions of the support modules corresponding to products with different diameters can be automatically converted, so that quick installation and quick centering are realized.
In summary, the head inner wall grinding device for the high-pressure gas cylinder aluminum alloy liner combines the aluminum alloy liner head inner wall grinding and the outer circle grinding on one device, and can respectively grind the inner surface and the outer surface of the liner under one-time clamping. The outer circle grinding part can grind the pipe fittings with rusty or scratched surfaces, so that the manufacturing efficiency and the appearance quality of finished products are not influenced in the process of manufacturing the pipe fittings into finished products; the polished part of the inner wall of the end socket can find scratches or defects of inner surfaces at different positions at any time through an industrial camera; through the connecting mechanism and the circuit arranged in the seal head inner wall grinding main shaft, the grinding wheel can rotate at a high speed under the driving of a high-speed motor, the high-speed grinding of the surface is realized, and the grinding quality is ensured; the circumferential small-sector grinding is realized, the problems of deep groove grinding, local over grinding and the like caused by point grinding are effectively avoided, and the grinding surface is smooth and continuous.
The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (4)
1. The utility model provides a head inner wall grinding device for high pressure gas cylinder aluminum alloy inner bag which characterized in that, head inner wall grinding device includes: the device comprises a tailstock, an axial movement mechanism, an axial driving motor, an up-down feeding mechanism, an up-down feeding driving motor, a seal head inner wall grinding main shaft, a seal head inner wall grinding motor, a transmission mechanism and a grinding wheel;
the axial movement mechanism is arranged on the frame; the axial motion mechanism is connected with the tailstock, the axial driving motor is connected with the axial motion mechanism, and the axial motion mechanism drives the whole seal head inner wall grinding mechanism to move axially along a machine tool according to the speed and the position set by a numerical control system under the drive of the axial driving motor;
the up-down feeding mechanism is arranged on the tailstock, and the up-down feeding driving motor is connected with the up-down feeding mechanism;
the grinding main shaft for the inner wall of the end socket is of a hollow structure and is provided with a hollow inner cavity;
the first end of the seal head inner wall grinding main shaft is connected with the grinding wheel, the second end of the seal head inner wall grinding main shaft is connected with the up-and-down feeding mechanism, the up-and-down feeding mechanism is driven by the up-and-down feeding motor, the seal head inner wall grinding main shaft and the grinding wheel at the first end of the seal head inner wall grinding main shaft are driven to move up and down according to the speed and the position set by a numerical control system, and the position control precision is lower than 0.02 mm;
the transmission mechanism is installed in a hollow inner cavity of the seal head inner wall grinding main shaft, one end of the transmission mechanism is connected with the grinding wheel, the other end of the transmission mechanism is connected with the seal head inner wall grinding motor, the seal head inner wall grinding motor can be stably transmitted to the grinding wheel in a high-speed rotating mode, the grinding wheel can rotate at a high speed, under the driving of the up-and-down feeding mechanism, scratches on the inner surface of the inner container are ground according to the set feeding speed and the set position, and the grinding depth is adjustable.
2. The device for grinding the inner wall of the end socket according to claim 1, wherein the main shaft for grinding the inner wall of the end socket swings at a set speed within a range of-5 degrees to +5 degrees during grinding of the inner wall of the end socket, so that smooth transition of a grinding area is ensured.
3. The head inner wall grinding device according to claim 1, wherein the head inner wall grinding mechanism comprises an industrial camera and an observer, the industrial camera is mounted at the front end of the grinding wheel and connected with the observer through a line arranged in the hollow head inner wall grinding spindle, and the industrial camera is used for observing and determining a scratch area and verifying grinding effect.
4. The head inner wall grinding device according to claim 3, wherein the industrial camera is provided with an automatic lighting device.
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| CN201911415592 | 2019-12-31 | ||
| CN2019114155922 | 2019-12-31 |
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| CN202011522641.5A Active CN112720204B (en) | 2019-12-31 | 2020-12-21 | Head inner wall grinding device for aluminum alloy liner of high-pressure gas cylinder |
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| CN112720204B (en) | 2022-09-23 |
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