CN116512118B - Main shaft power control device for grinding of gantry machining center - Google Patents
Main shaft power control device for grinding of gantry machining center Download PDFInfo
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- CN116512118B CN116512118B CN202310811851.3A CN202310811851A CN116512118B CN 116512118 B CN116512118 B CN 116512118B CN 202310811851 A CN202310811851 A CN 202310811851A CN 116512118 B CN116512118 B CN 116512118B
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- main shaft
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- grinding wheel
- cooling cylinder
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- 238000001816 cooling Methods 0.000 claims abstract description 62
- 238000003754 machining Methods 0.000 claims abstract description 27
- 239000007788 liquid Substances 0.000 claims abstract description 24
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 17
- 230000000903 blocking effect Effects 0.000 claims abstract description 6
- 239000012530 fluid Substances 0.000 claims description 34
- 238000000034 method Methods 0.000 claims description 13
- 238000004891 communication Methods 0.000 claims description 4
- 238000002347 injection Methods 0.000 claims description 4
- 239000007924 injection Substances 0.000 claims description 4
- 230000000149 penetrating effect Effects 0.000 claims description 2
- 238000009434 installation Methods 0.000 claims 2
- 235000017166 Bambusa arundinacea Nutrition 0.000 claims 1
- 235000017491 Bambusa tulda Nutrition 0.000 claims 1
- 241001330002 Bambuseae Species 0.000 claims 1
- 235000015334 Phyllostachys viridis Nutrition 0.000 claims 1
- 239000011425 bamboo Substances 0.000 claims 1
- 238000005498 polishing Methods 0.000 description 8
- 230000000694 effects Effects 0.000 description 3
- 239000002245 particle Substances 0.000 description 3
- 238000005507 spraying Methods 0.000 description 3
- 235000006506 Brasenia schreberi Nutrition 0.000 description 2
- 244000267222 Brasenia schreberi Species 0.000 description 2
- 239000000428 dust Substances 0.000 description 2
- 230000005855 radiation Effects 0.000 description 2
- 239000007921 spray Substances 0.000 description 2
- 241001272720 Medialuna californiensis Species 0.000 description 1
- 230000001154 acute effect Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000011230 binding agent Substances 0.000 description 1
- 239000002131 composite material Substances 0.000 description 1
- 239000012141 concentrate Substances 0.000 description 1
- 238000001035 drying Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000002093 peripheral effect Effects 0.000 description 1
- 238000007517 polishing process Methods 0.000 description 1
- 238000004080 punching Methods 0.000 description 1
- 230000008093 supporting effect Effects 0.000 description 1
Classifications
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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
- B24B27/00—Other grinding machines or devices
- B24B27/02—Bench grinders
-
- 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
- B24B41/007—Weight compensation; Temperature compensation; Vibration damping
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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
- B24B45/00—Means for securing grinding wheels on rotary arbors
- B24B45/003—Accessories therefor
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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
- B24B47/10—Drives or gearings; Equipment therefor for rotating or reciprocating working-spindles carrying grinding wheels or workpieces
- B24B47/12—Drives or gearings; Equipment therefor for rotating or reciprocating working-spindles carrying grinding wheels or workpieces by mechanical gearing or electric power
-
- 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
- B24B55/00—Safety devices for grinding or polishing machines; Accessories fitted to grinding or polishing machines for keeping tools or parts of the machine in good working condition
- B24B55/02—Equipment for cooling the grinding surfaces, e.g. devices for feeding coolant
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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
- B24B55/00—Safety devices for grinding or polishing machines; Accessories fitted to grinding or polishing machines for keeping tools or parts of the machine in good working condition
- B24B55/06—Dust extraction equipment on grinding or polishing machines
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P70/00—Climate change mitigation technologies in the production process for final industrial or consumer products
- Y02P70/10—Greenhouse gas [GHG] capture, material saving, heat recovery or other energy efficient measures, e.g. motor control, characterised by manufacturing processes, e.g. for rolling metal or metal working
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Grinding-Machine Dressing And Accessory Apparatuses (AREA)
Abstract
The application relates to the technical field of grinding, in particular to a main shaft power control device for grinding a gantry machining center, which comprises a gantry machining center and a main shaft mechanism; the main shaft mechanism comprises a main shaft, a shell, an air floatation sleeve, an annular cover body and a grinding wheel mounting disc; the main shaft can be rotatably arranged in the shell, and the air floatation sleeve is arranged at the bottom of the shell and used for forming an air bearing to support the main shaft; the annular cover body is arranged at the bottom of the air floatation sleeve, the lower end of the main shaft is provided with a mounting seat, and an air flow channel is formed between the mounting seat and the annular cover body; the bottom of the mounting seat is provided with a cooling cylinder, a liquid channel is arranged in the main shaft, and the outer wall of the cooling cylinder is provided with a plurality of conical jet ports; the grinding wheel mounting plate is coaxially and slidably arranged in the cooling cylinder, and the bottom of the grinding wheel mounting plate is provided with a grinding wheel; the plurality of conical jet openings can form a water curtain for blocking machining scraps, and the water curtain is matched with the airflow channel, so that the blocking effect on the machining scraps is further improved.
Description
Technical Field
The application relates to the technical field of grinding, in particular to a main shaft power control device for grinding of a gantry machining center.
Background
The gantry machining center is a machining center with the axis of a Z shaft of a main shaft perpendicular to a workbench, and the whole structure is a large-scale machining center with a portal structure frame formed by double upright posts and top beams, wherein a cross beam is arranged between the double upright posts. Is especially suitable for processing large-sized workpieces and workpieces with complex shapes.
There are fixed beams (beam fixed, table moving/rotating), movable beams (beam moving up and down, table moving back and forth), movable columns (table fixed, gantry moving), crown blocks (table fixed, beam moving), and many kinds of gantry machining centers of the above composite form. The nature, ability, and intended product processing uses of the process are not exactly the same.
In the process of grinding a workpiece, the grinding wheel arranged on the main shaft is driven by the main shaft to grind the workpiece, grinding liquid needs to be continuously sprayed to the contact position of the grinding wheel workpiece in the grinding process, the grinding effect can be improved when the temperature is reduced, but the grinding liquid containing machining scraps possibly splashes on the main shaft in the grinding process, and after the grinding liquid is dried, the machining scraps can remain on the main shaft, so that the operation of the main shaft is influenced.
Chinese patent: CN115609391a; the application discloses a spindle unit, which avoids a machining liquid containing machining scraps from accumulating in a gap between a spindle and a cover. The spindle unit includes a housing that supports an air bearing around a spindle in an axial direction in a vertical direction, a mount is coupled to a front end of the spindle protruding downward from a lower end of the housing, a cover surrounds the spindle exposed between a lower surface of the housing and an upper surface of the mount with a gap provided between the cover and an outer side surface of the spindle, an air supply unit is formed inside the spindle, and supplies air to the gap by rotation of the spindle, the air supply unit includes: an inlet passage which opens at the upper part of the main shaft and extends in the axial direction; and a radiation path extending from the lower end of the inlet path along the radial direction of the main shaft, opening on the outer side surface of the main shaft and communicating with the gap, wherein air sucked from the opening on the upper part of the rotating main shaft is discharged to the gap through the inlet path and the radiation path, and the gap is cleaned.
In the application, the processing scraps existing between the cover body and the main shaft are blown through high-pressure gas, so that the residues of the processing scraps are avoided; however, if the machining chips with a large volume enter between the cover and the spindle with the splashed polishing liquid, the machining chips may be stuck between the spindle and the cover, and the machining chips cannot be blown out by high-pressure gas.
Disclosure of Invention
Aiming at the problems existing in the prior art, the main shaft power control device for grinding in the gantry machining center is provided, and through the cooperation of the main shaft, the air floatation sleeve, the cooling cylinder and the annular cover body, grinding fluid can form a water curtain through a conical jet orifice so as to intercept machining scraps, and through being provided with a buffer component, when a grinding wheel contacts with a workpiece flash, the main shaft is prevented from being damaged, the jet speed of the grinding fluid through the conical jet orifice can be improved, and therefore the interception effect of the machining scraps is enhanced.
In order to solve the problems in the prior art, the application adopts the following technical scheme:
the main shaft power control device for grinding the gantry machining center comprises a gantry machining center and a main shaft mechanism arranged on the gantry machining center and used for grinding a workpiece; the main shaft mechanism comprises a main shaft, a shell, a driving assembly, an air floatation sleeve, an annular cover body and a grinding wheel mounting disc; the main shaft is coaxially and rotatably arranged at the center of the inside of the shell, and the driving assembly is arranged in the shell and used for driving the main shaft to rotate; the outer wall of the main shaft is also provided with an annular limiting disc, the air floatation sleeve is coaxially arranged at the bottom of the shell, the inner wall of the air floatation sleeve is provided with an annular groove for accommodating the annular limiting disc, the annular limiting disc is in clearance fit with the annular groove, the inner wall of the annular groove is provided with a plurality of air floatation holes along the circumferential direction, the air floatation sleeve is internally provided with an air storage cavity, each air floatation hole is communicated with the air storage cavity, and the outer wall of the air floatation sleeve is also provided with an air inlet hole communicated with the air storage cavity; the annular cover body is coaxially arranged at one end of the air floatation sleeve, which is far away from the shell, the lower end of the main shaft is provided with a mounting seat, and an air flow channel for passing air is formed between the mounting seat and the annular cover body; the bottom of the mounting seat is provided with a cooling cylinder, a liquid channel is arranged in the main shaft, a communication hole for communicating the liquid channel is arranged in the center of the bottom of the cooling cylinder, the opening direction of the cooling cylinder faces one end far away from the mounting seat, and the outer wall of the bottom of the cooling cylinder is also provided with a plurality of conical injection ports along the circumferential direction; the grinding wheel mounting plate is coaxially arranged inside the cooling cylinder, a cooling channel for liquid circulation is formed between the cooling cylinder and the grinding wheel mounting plate, and the bottom of the grinding wheel mounting plate is provided with a grinding wheel.
Preferably, a buffer component capable of preventing the grinding wheel from rigidly contacting with the flash of the workpiece is further arranged between the grinding wheel mounting disc and the cooling cylinder.
Preferably, the buffer assembly comprises a guide rod and a buffer spring; the lower end of the cooling cylinder is provided with a plurality of threaded holes along the circumferential direction, the guide rods are provided with a plurality of, and one end of each guide rod is in threaded connection with the corresponding threaded hole;
the outer wall of the bottom of the grinding wheel mounting disc is also provided with an annular mounting block; an annular sliding cavity is formed in the annular mounting block, a plurality of guide holes for the guide rods to pass through are formed in the edge of the top of the annular mounting block, and each guide hole is communicated with the annular sliding cavity; one end of each guide rod, which is far away from the corresponding threaded hole, extends into the annular sliding cavity through the corresponding guide hole and is provided with a fixed disc, and the diameter of the fixed disc is larger than that of the guide hole; the buffer springs are arranged in a plurality, sleeved on the corresponding guide rods and positioned between the annular mounting block and the cooling cylinder.
Preferably, the edge of the bottom of the annular cover body is also provided with a scattering cover, and a plurality of scattering holes are formed in the scattering cover.
Preferably, the drive assembly comprises a rotor and a stator; the rotor is fixedly sleeved on the main shaft, and the stator is arranged on the inner wall of the shell and used for driving the rotor to rotate.
Preferably, the outer wall of the top of the housing is provided with a plurality of V-shaped exhaust ports in the circumferential direction.
Preferably, a certain gap is reserved between the grinding wheel and the wheel mounting plate.
Preferably, the top of the annular mounting block is further provided with a plurality of flow holes penetrating the annular mounting block.
Preferably, the outer wall of the annular cover body is also provided with a water retaining cover.
Compared with the prior art, the application has the beneficial effects that:
1. according to the application, through the cooperation of the main shaft, the air floatation sleeve, the cooling cylinder and the annular cover body, high-pressure air can form an air bearing in the annular groove of the air floatation sleeve, so that the friction loss of the main shaft is reduced, the high-pressure air can blow machining scraps along the air channel, grinding fluid can be discharged from the cooling channel formed between the cooling cylinder and the mounting seat along the conical jet orifice, and a first water curtain is formed, so that the machining scraps are further intercepted.
2. According to the application, through the matching of the guide rod, the buffer spring and the grinding wheel mounting disc, when the grinding wheel contacts with the flash of the workpiece, the grinding wheel can be self-adaptively attached to the flash, the grinding wheel is prevented from being rigidly contacted with the flash to damage a main shaft, and when the grinding wheel mounting disc moves, the inner diameter of the cooling channel can be reduced, so that the spraying speed of grinding fluid from the conical spraying port is improved, and the blocking effect on machining scraps is improved.
3. According to the application, the scattering cover is arranged, so that processing scraps of larger particles in the grinding process can be blocked, and the larger particles are prevented from entering between the annular cover body and the main shaft; the grinding fluid sprayed from the conical spray orifice can be scattered, high-pressure gas can flow along a gas channel formed between the annular cover body and the mounting seat and is contacted with the grinding fluid blocked by the scattering cover, so that the scattering grinding fluid is disturbed, the grinding fluid can be fully and secondarily contacted with machining scraps, and the machining scraps are further prevented from remaining between the main shaft and the annular cover body.
Drawings
FIG. 1 is a perspective view of a spindle power control device for grinding a gantry machining center;
FIG. 2 is a perspective view of a spindle mechanism in a spindle power control device for grinding a gantry machining center;
FIG. 3 is a front view of a spindle mechanism in a spindle power control device for grinding a gantry machining center;
FIG. 4 is a plan cross-sectional view taken along the direction A-A of FIG. 3;
FIG. 5 is an enlarged view of a portion of FIG. 4 at B;
FIG. 6 is an enlarged view of a portion of FIG. 4 at C;
FIG. 7 is a perspective cross-sectional view of a spindle mechanism in a spindle power control device for grinding a gantry machining center;
FIG. 8 is a partial enlarged view at D in FIG. 7;
fig. 9 is a perspective view of another water shield used for a spindle mechanism in a spindle power control device for grinding a gantry machining center. The reference numerals in the figures are:
1-a gantry machining center;
2-a spindle mechanism; 21-a main shaft; 211-an annular limiting disc; 212-a mounting base; 2121-a cooling cylinder; 2122-communicating holes; 2123-conical ejection ports; 2124-threaded holes; 213-liquid channel; 214-a swivel;
22-a housing; 221-V-shaped exhaust port;
23-a drive assembly; 231-rotor; 232-a stator;
24-air floatation sleeve; 241-an annular groove; 242-air floatation holes; 243-an air storage cavity; 244-air inlet holes; 25-an annular cover; 251-scattering cover; 252-punching the hole; 253-a water shield;
26-a grinding wheel mounting plate; 261-grinding wheel; 262-annular mounting blocks; 2621-annular sliding chamber; 2622-guide holes; 2623-flow holes;
3-air flow channels;
4-a cooling channel;
a 5-buffer assembly; 51-a guide bar; 511-a fixed disk; 52-buffer spring.
Description of the embodiments
The application will be further described in detail with reference to the drawings and the detailed description below, in order to further understand the features and technical means of the application and the specific objects and functions achieved.
Referring to fig. 1 to 9, a spindle power control device for grinding a gantry machining center includes a gantry machining center 1 and a spindle mechanism 2 provided on the gantry machining center 1 for grinding a workpiece; the spindle mechanism 2 comprises a spindle 21, a shell 22, a driving assembly 23, an air floatation sleeve 24, an annular cover body 25 and a grinding wheel mounting disc 26; the main shaft 21 is coaxially and rotatably arranged at the center of the inside of the shell 22, and the driving assembly 23 is arranged inside the shell 22 and used for driving the main shaft 21 to rotate; the outer wall of the main shaft 21 is also provided with an annular limiting disc 211, the air floatation sleeve 24 is coaxially arranged at the bottom of the shell 22, the inner wall of the air floatation sleeve 24 is provided with an annular groove 241 for accommodating the annular limiting disc 211, the annular limiting disc 211 is in clearance fit with the annular groove 241, the inner wall of the annular groove 241 is provided with a plurality of air floatation holes 242 along the circumferential direction, the air floatation sleeve 24 is internally provided with an air storage cavity 243, each air floatation hole 242 is communicated with the air storage cavity 243, and the outer wall of the air floatation sleeve 24 is also provided with an air inlet hole 244 communicated with the air storage cavity 243; the annular cover body 25 is coaxially arranged at one end of the air floatation sleeve 24 far away from the shell 22, the lower end of the main shaft 21 is provided with a mounting seat 212, and an air flow channel 3 for passing air is formed between the mounting seat 212 and the annular cover body 25; the bottom of the mounting seat 212 is provided with a cooling cylinder 2121, a liquid channel 213 is arranged in the main shaft 21, a communication hole 2122 for communicating the liquid channel 213 is arranged in the center of the bottom of the cooling cylinder 2121, the opening direction of the cooling cylinder 2121 faces towards one end far away from the mounting seat 212, and a plurality of conical injection ports 2123 are also arranged on the outer wall of the bottom of the cooling cylinder 2121 along the circumferential direction; the grinding wheel mounting plate 26 is coaxially arranged inside the cooling cylinder 2121, a cooling channel 4 for liquid circulation is formed between the cooling cylinder 2121 and the grinding wheel mounting plate 26, and a grinding wheel 261 is arranged at the bottom of the grinding wheel mounting plate 26.
When a workpiece is required to be ground, a worker places the workpiece on the gantry machining center 1, then continuously introduces high-pressure gas into the gas inlet holes 244 of the gas floatation sleeve 24 through an external gas source, at least two gas inlet holes 244 are arranged at equal intervals relative to the axis of the gas floatation sleeve 24, so that the high-pressure gas can timely enter the annular groove 241 through the plurality of gas floatation holes 242 (the gas flow direction is shown by arrows in fig. 4 and 5), an air bearing is formed to support the main shaft 21, friction loss of the main shaft 21 is reduced, the main shaft 21 is driven to rotate through the driving assembly 23, grinding fluid (the liquid flow direction is shown by the arrows in fig. 4 and 6) is conveyed to the liquid channel 213 in the main shaft 21 through an external water source, the grinding fluid enters the cooling cylinder 2121 along the liquid channel 213 and the communication hole 2122, and at the moment, the grinding fluid can flow downwards through the cooling channel 4 formed between the cooling cylinder 2121 and the grinding wheel mounting disc 26, so that the grinding fluid can contact with the grinding wheel 261, the grinding fluid can not only reduce the temperature of the grinding wheel 261, but also avoid the grinding dust from being splashed, and the grinding dust can be further processed; in the process of rotating the main shaft 21, high-pressure gas needs to be continuously introduced, and after the high-pressure gas has a supporting effect on the main shaft 21, the high-pressure gas downwards flows along the air flow channel 3 formed by the mounting seat 212 and the annular cover body 25 and is sprayed out from a notch formed among the annular cover body 25, the cooling cylinder 2121 and the mounting seat 212, so that grinding fluid is prevented from being mixed with machining scraps to adhere to the main shaft 21 in the grinding process, and the stable operation of the main shaft 21 is influenced; each of the tapered ejection ports 2123 is disposed at an acute angle to the axis of the main shaft 21 and the side of the tapered ejection port 2123 having the larger inner diameter faces the outside of the cooling cylinder 2121 and the side having the smaller inner diameter faces the inside of the cooling cylinder 2121; when the grinding fluid flows into the cooling cylinder 2121, the grinding fluid is sprayed towards the outer wall of the annular cover body 25 through the conical spraying port 2123, so that an annular first water curtain is formed, and machining scraps in the grinding process are further blocked, so that the machining scraps are prevented from being adhered to the main shaft 21.
Referring to fig. 4, 6, 7 and 8, a buffer assembly 5 capable of preventing the grinding wheel 261 from rigidly contacting the flash of the workpiece is further arranged between the wheel mounting plate 26 and the cooling cylinder 2121; the buffer assembly 5 includes a guide rod 51 and a buffer spring 52; the lower end of the cooling cylinder 2121 is provided with a plurality of threaded holes 2124 along the circumferential direction, the guide rods 51 are provided in a plurality, and one end of each guide rod 51 is in threaded connection with the corresponding threaded hole 2124; the outer wall of the bottom of the grinding wheel mounting plate 26 is also provided with an annular mounting block 262; an annular sliding cavity 2621 is formed in the annular mounting block 262, a plurality of guide holes 2622 for the guide rods 51 to pass through are formed in the top edge of the annular mounting block 262, and each guide hole 2622 is communicated with the annular sliding cavity 2621; one end of each guide rod 51 far away from the corresponding threaded hole 2124 extends into the annular sliding cavity 2621 through the corresponding guide hole 2622 and is provided with a fixed disc 511, and the diameter of the fixed disc 511 is larger than that of the guide hole 2622; the buffer springs 52 are multiple, and the buffer springs 52 are sleeved on the corresponding guide rods 51 and are positioned between the annular mounting blocks 262 and the cooling cylinders 2121.
The grinding wheel mounting plate 26 and the cooling cylinder 2121 are coaxially arranged, and the connection stability between the grinding wheel mounting plate 26 and the cooling cylinder 2121 can be ensured through the arrangement of the plurality of guide rods 51, and the cooling channel 4 can be reserved between the grinding wheel mounting plate 26 and the inner wall of the bottom of the cooling cylinder 2121 while the position of the grinding wheel mounting plate 26 is limited through the arrangement of the plurality of buffer springs 52 and the fixed plate 511; along with the adjustment of the gantry machining center 1 to the position of the main shaft 21, the grinding wheel 261 can slowly move on the surface of a workpiece, when the grinding wheel 261 contacts with flash or protrusions on the workpiece, the grinding wheel 261 moves along the axis of the main shaft 21 towards the direction close to the cooling cylinder 2121, in the process, the guide rods 51 can synchronously move along the axis of the corresponding guide holes 2622, the buffer springs 52 are extruded to generate elastic force, the grinding wheel 261 can adaptively attach to the flash, the flash is polished, rigid contact of the grinding wheel 261 with the flash of the workpiece is avoided, the main shaft 21 is damaged, the inner diameter of a cooling channel 4 between the top of the grinding wheel mounting disc 26 and the inner wall of the bottom of the cooling cylinder 2121 is reduced, so that grinding fluid in the cooling channel 4 can be sprayed out of the conical spray port 2123 more quickly, a more dense first water curtain is formed, and a large amount of machining scraps generated in the process of polishing the flash of the workpiece are blocked.
Referring to fig. 4 and 6, a scattering cover 251 is further provided at the bottom edge of the annular cover 25, and a plurality of scattering holes 252 are provided on the scattering cover 251.
By arranging the scattering cover 251, the scattering cover 251 can block processing scraps of larger particles in the grinding process, so that the processing scraps are prevented from entering between the annular cover body 25 and the main shaft 21; the scattering cover 251 is further provided with a plurality of scattering holes 252, and the grinding fluid ejected from the conical ejection opening 2123 can collide with the scattering cover 251 and contact with the scattering holes 252, so that the grinding fluid can be more dispersed, a certain buffer area can be provided for the machining chips, the machining chips can contact with the blocked grinding fluid, the machining chips are prevented from being blocked between the annular cover 25 and the mounting seat 212 of the main shaft 21, high-pressure gas can flow along a gas channel formed between the annular cover 25 and the mounting seat 212 and contact with the grinding fluid blocked by the scattering cover 251, the grinding fluid can be disturbed, the grinding fluid can be fully contacted with the machining chips for a second time, and the machining chips are further prevented from remaining between the main shaft 21 and the annular cover 25.
Referring to fig. 4 and 7, the driving assembly 23 includes a rotor 231 and a stator 232; the rotor 231 is fixedly sleeved on the main shaft 21, and the stator 232 is arranged on the inner wall of the shell 22 and is used for driving the rotor 231 to rotate.
The top of the main shaft 21 is also provided with a rotary joint 214, so that the electric energy can be provided for the stator 232, meanwhile, grinding fluid can be conveyed into the liquid channel 213 of the main shaft 21, and along with the electrifying of the stator 232, the rotor 231 can drive the main shaft 21 to rotate, so that the grinding wheel 261 can grind a workpiece.
Referring to fig. 2, 4 and 7, the top outer wall of the housing 22 is provided with a plurality of V-shaped exhaust ports 221 in the circumferential direction.
Along with the introduction of high-pressure gas, the gas enters into the shell 22 along the -shaped air passage formed by the annular groove 241 and the annular limiting disc 211, so that the stator 232 and the rotor 231 are blown and cooled, the gas with high temperature can be discharged out of the shell 22 through the V-shaped exhaust port 221, so that the overhigh temperature in the shell 22 is avoided, and the V-shaped exhaust port 221 is arranged to form a bent exhaust passage, so that the splashing grinding fluid can be prevented from entering into the shell 22, and the stable operation of the stator 232 and the rotor 231 is influenced.
Referring to fig. 4, a certain gap is left between the grinding wheel 261 and the wheel mounting plate 26.
The grinding wheel 261 is fixedly connected with the wheel mounting plate 26 through the nut and the annular limiting piece, so that a certain gap can be reserved between the grinding wheel 261 and the wheel mounting seat 212, grinding fluid flowing down from the cooling channel 4 can be contacted with the grinding wheel 261, and the mobility of the grinding fluid on the grinding wheel 261 is ensured.
Referring to fig. 4, 5 and 8, the top of the annular mounting block 262 is further provided with a plurality of flow holes 2623 extending through the annular mounting block 262.
Grinding wheel 261 is a porous body produced by adding a binder to an abrasive, compacting, drying, and baking; each circulation hole 2623 is located between the inner wall of the cooling cylinder 2121 and the outer wall of the mounting seat 212, when the grinding fluid enters the upper portion of the annular mounting block 262 along the fluid channel 213 and the cooling channel 4, at this time, part of the grinding fluid can enter the upper end of the grinding wheel 261 along the circulation holes 2623, and the contact surface between the workpiece and the grinding wheel 261 can be lubricated while the grinding wheel 261 is cooled, so that the grinding quality is ensured; since some of the polishing liquid does not enter the flow hole 2623, the polishing liquid impacts the top of the annular mounting block 262 and flows out from the gap between the cooling cylinder 2121 and the annular mounting block 262 to form a second "water curtain", so that the processing scraps generated in the polishing process are adsorbed again, and the blocking effect of the first "water curtain" is supplemented.
Referring to fig. 2, 4 and 9, the outer wall of the annular cover 25 is further provided with a water blocking cover 253.
When grinding through grinding wheel 261 bottom, manger plate cover 253 is cylindrical shape (along with the figure 2 shows), can thereby intercept first "water curtain" and second "water curtain", avoid it to produce at the grinding in-process, splash to manger plate cover 253 can make the grinding fluid can concentrate strike grinding wheel 261 and the contact surface of work piece, improves the grinding effect.
When polishing is performed using the outer peripheral surface of the polishing wheel 261, the water guard 253 has a half-moon shape (as shown in fig. 9), and the opening end of the water guard 253 faces the contact surface of the polishing wheel 261 and the workpiece, so that it is possible to ensure that the polishing liquid can be sprayed onto the workpiece through the opening of the water guard 253.
The foregoing examples merely illustrate one or more embodiments of the application, which are described in greater detail and are not to be construed as limiting the scope of the application. It should be noted that it will be apparent to those skilled in the art that several variations and modifications can be made without departing from the spirit of the application, which are all within the scope of the application. Accordingly, the scope of protection of the present application is to be determined by the appended claims.
Claims (5)
1. The main shaft power control device for grinding the gantry machining center comprises a gantry machining center and a main shaft mechanism arranged on the gantry machining center and used for grinding a workpiece; the device is characterized in that the main shaft mechanism comprises a main shaft, a shell, a driving assembly, an air floatation sleeve, an annular cover body and a grinding wheel mounting disc;
the main shaft is coaxially and rotatably arranged at the center of the inside of the shell, and the driving assembly is arranged in the shell and used for driving the main shaft to rotate;
the outer wall of the main shaft is also provided with an annular limiting disc, the air floatation sleeve is coaxially arranged at the bottom of the shell, the inner wall of the air floatation sleeve is provided with an annular groove for accommodating the annular limiting disc, the annular limiting disc is in clearance fit with the annular groove, the inner wall of the annular groove is provided with a plurality of air floatation holes along the circumferential direction, the air floatation sleeve is internally provided with an air storage cavity, each air floatation hole is communicated with the air storage cavity, and the outer wall of the air floatation sleeve is also provided with an air inlet hole communicated with the air storage cavity;
the annular cover body is coaxially arranged at one end of the air floatation sleeve, which is far away from the shell, the lower end of the main shaft is provided with a mounting seat, an air flow channel for air to pass through is formed between the mounting seat and the annular cover body, and the air is sprayed out through the air flow channel to intercept the processing scraps so as to prevent the processing scraps from entering the air flow channel;
the bottom of the mounting seat is provided with a cooling cylinder, a liquid channel is arranged in the main shaft, a communication hole for communicating the liquid channel is arranged in the center of the bottom of the cooling cylinder, the opening direction of the cooling cylinder faces towards one end far away from the mounting seat, the outer wall of the bottom of the cooling cylinder is also provided with a plurality of conical injection ports along the circumferential direction, and the conical injection ports can inject grinding fluid and intercept machining scraps in cooperation with gas sprayed by the airflow channel;
the grinding wheel mounting plate is coaxially arranged in the cooling cylinder, a cooling channel for liquid circulation is formed between the cooling cylinder and the grinding wheel mounting plate, and the bottom of the grinding wheel mounting plate is provided with a grinding wheel;
a buffer assembly capable of preventing the grinding wheel from rigidly contacting with the flash of the workpiece is further arranged between the grinding wheel mounting disc and the cooling cylinder, and comprises a guide rod and a buffer spring;
the lower end of the cooling cylinder is provided with a plurality of threaded holes along the circumferential direction, the guide rods are provided with a plurality of, and one end of each guide rod is in threaded connection with the corresponding threaded hole;
the outer wall of the bottom of the grinding wheel mounting disc is also provided with an annular mounting block; an annular sliding cavity is formed in the annular mounting block, a plurality of guide holes for the guide rods to pass through are formed in the edge of the top of the annular mounting block, and each guide hole is communicated with the annular sliding cavity;
one end of each guide rod, which is far away from the corresponding threaded hole, extends into the annular sliding cavity through the corresponding guide hole and is provided with a fixed disc, and the diameter of the fixed disc is larger than that of the guide hole;
the plurality of buffer springs are sleeved on the corresponding guide rods and positioned between the annular mounting blocks and the cooling cylinder;
a certain gap is reserved between the grinding wheel and the wheel mounting plate, and a plurality of circulation holes penetrating through the annular mounting block are further formed in the top of the annular mounting block;
every circulation hole all is located between cooling section of thick bamboo inner wall and the mount pad outer wall, and when the grinding fluid enters into annular installation piece top along liquid passage, cooling passageway, the grinding fluid will flow to two following departments:
firstly, entering the upper end of the grinding wheel along the flow hole to cool the grinding wheel and lubricate the grinding surfaces of the grinding wheel and the workpiece;
secondly, flow out from the clearance between cooling cylinder and the annular installation piece, supplementary processing bits that interception grinding in-process produced.
2. The spindle power control device for grinding a gantry machining center according to claim 1, wherein a scattering cover is further arranged at the bottom edge of the annular cover body, and a plurality of scattering holes are formed in the scattering cover.
3. The spindle power control device for grinding a gantry machining center of claim 1, wherein the drive assembly includes a rotor and a stator;
the rotor is fixedly sleeved on the main shaft, and the stator is arranged on the inner wall of the shell and used for driving the rotor to rotate.
4. A spindle power control device for grinding a gantry machining center as claimed in claim 3, wherein the outer wall of the top of the housing is provided with a plurality of V-shaped exhaust ports in the circumferential direction.
5. The spindle power control device for grinding a gantry machining center according to claim 1, wherein the outer wall of the annular cover body is further provided with a water blocking cover.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310811851.3A CN116512118B (en) | 2023-07-04 | 2023-07-04 | Main shaft power control device for grinding of gantry machining center |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310811851.3A CN116512118B (en) | 2023-07-04 | 2023-07-04 | Main shaft power control device for grinding of gantry machining center |
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| CN116512118A CN116512118A (en) | 2023-08-01 |
| CN116512118B true CN116512118B (en) | 2023-09-15 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202310811851.3A Active CN116512118B (en) | 2023-07-04 | 2023-07-04 | Main shaft power control device for grinding of gantry machining center |
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Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2018083253A (en) * | 2016-11-24 | 2018-05-31 | 株式会社ディスコ | Spindle unit and grinding device |
| KR20190004667A (en) * | 2017-07-04 | 2019-01-14 | 가부시기가이샤 디스코 | Grinding machine |
| CN211867358U (en) * | 2020-04-08 | 2020-11-06 | 厦门市佳嘉达机械有限公司 | Automatic burnishing and polishing equipment |
| CN112571164A (en) * | 2020-12-07 | 2021-03-30 | 蒲元军 | Mechanical device for grinding |
| CN113635217A (en) * | 2021-08-30 | 2021-11-12 | 丹阳市镖准思自动化科技有限公司 | Grinding wheel internal cooling structure and assembling method thereof |
| WO2022100620A1 (en) * | 2020-11-16 | 2022-05-19 | 湖南大学 | Self-adaptive grinding wheel device of grinding machine |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN206732729U (en) * | 2017-03-17 | 2017-12-12 | 桂林创源金刚石有限公司 | A kind of diamond abnormity emery wheel and vertical processing cooling system |
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2023
- 2023-07-04 CN CN202310811851.3A patent/CN116512118B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2018083253A (en) * | 2016-11-24 | 2018-05-31 | 株式会社ディスコ | Spindle unit and grinding device |
| KR20190004667A (en) * | 2017-07-04 | 2019-01-14 | 가부시기가이샤 디스코 | Grinding machine |
| CN211867358U (en) * | 2020-04-08 | 2020-11-06 | 厦门市佳嘉达机械有限公司 | Automatic burnishing and polishing equipment |
| WO2022100620A1 (en) * | 2020-11-16 | 2022-05-19 | 湖南大学 | Self-adaptive grinding wheel device of grinding machine |
| CN112571164A (en) * | 2020-12-07 | 2021-03-30 | 蒲元军 | Mechanical device for grinding |
| CN113635217A (en) * | 2021-08-30 | 2021-11-12 | 丹阳市镖准思自动化科技有限公司 | Grinding wheel internal cooling structure and assembling method thereof |
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| CN116512118A (en) | 2023-08-01 |
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