CN116511983B - Noise reduction device for numerical control machining center - Google Patents
Noise reduction device for numerical control machining center Download PDFInfo
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- CN116511983B CN116511983B CN202310812762.0A CN202310812762A CN116511983B CN 116511983 B CN116511983 B CN 116511983B CN 202310812762 A CN202310812762 A CN 202310812762A CN 116511983 B CN116511983 B CN 116511983B
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- 230000009467 reduction Effects 0.000 title claims abstract description 30
- 230000007246 mechanism Effects 0.000 claims abstract description 38
- 238000003801 milling Methods 0.000 claims abstract description 32
- 238000012545 processing Methods 0.000 claims abstract description 13
- 239000012790 adhesive layer Substances 0.000 claims description 25
- 230000003014 reinforcing effect Effects 0.000 claims description 25
- 238000001816 cooling Methods 0.000 claims description 12
- 239000010410 layer Substances 0.000 claims description 9
- 239000003292 glue Substances 0.000 claims description 7
- 238000009413 insulation Methods 0.000 claims description 5
- 239000012774 insulation material Substances 0.000 claims description 5
- 230000001681 protective effect Effects 0.000 claims description 5
- 239000011358 absorbing material Substances 0.000 claims description 3
- 238000010521 absorption reaction Methods 0.000 claims description 2
- 239000003638 chemical reducing agent Substances 0.000 claims 1
- 230000002401 inhibitory effect Effects 0.000 claims 1
- 238000003754 machining Methods 0.000 abstract description 20
- 230000000694 effects Effects 0.000 abstract description 2
- 230000033001 locomotion Effects 0.000 description 12
- 239000000853 adhesive Substances 0.000 description 5
- 230000001070 adhesive effect Effects 0.000 description 5
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 5
- 230000007547 defect Effects 0.000 description 3
- 230000009286 beneficial effect Effects 0.000 description 2
- 230000005540 biological transmission Effects 0.000 description 2
- 230000008859 change Effects 0.000 description 2
- 238000013461 design Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 239000011810 insulating material Substances 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 230000013011 mating Effects 0.000 description 1
- 230000009347 mechanical transmission Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000000452 restraining effect Effects 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
- 238000005507 spraying Methods 0.000 description 1
Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23Q—DETAILS, COMPONENTS, OR ACCESSORIES FOR MACHINE TOOLS, e.g. ARRANGEMENTS FOR COPYING OR CONTROLLING; MACHINE TOOLS IN GENERAL CHARACTERISED BY THE CONSTRUCTION OF PARTICULAR DETAILS OR COMPONENTS; COMBINATIONS OR ASSOCIATIONS OF METAL-WORKING MACHINES, NOT DIRECTED TO A PARTICULAR RESULT
- B23Q11/00—Accessories fitted to machine tools for keeping tools or parts of the machine in good working condition or for cooling work; Safety devices specially combined with or arranged in, or specially adapted for use in connection with, machine tools
- B23Q11/0078—Safety devices protecting the operator, e.g. against accident or noise
- B23Q11/0096—Safety devices protecting the operator, e.g. against accident or noise protecting against noise
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P70/00—Climate change mitigation technologies in the production process for final industrial or consumer products
- Y02P70/10—Greenhouse gas [GHG] capture, material saving, heat recovery or other energy efficient measures, e.g. motor control, characterised by manufacturing processes, e.g. for rolling metal or metal working
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Auxiliary Devices For Machine Tools (AREA)
Abstract
The invention discloses a noise reduction device for a numerical control machining center, and particularly relates to the technical field of numerical control machining equipment, comprising a cutting unit, a workpiece fixing unit and a supporting noise reduction unit, wherein the supporting noise reduction unit is used for attaching and supporting the side wall of a thin-wall cavity workpiece; the workpiece fixing unit comprises a bearing base for placing a thin-wall cavity workpiece; the cutting unit comprises a milling cutter for milling the outer wall of the thin-wall cavity workpiece and a machine tool spindle system for driving the milling cutter to rotate; the supporting noise reduction unit comprises a reinforced supporting structure and a movable connecting mechanism for connecting the reinforced supporting structure on the bearing base. According to the invention, the strength of the processing position at the position is enhanced by supporting the thin-wall structure by the reinforced supporting structure, the amplitude of elastic vibration of the structure at the position is reduced, noise is reduced, the side wall at the position is prevented from vibrating along with other side walls of the workpiece, the noise is further reduced, and the noise reduction effect is realized.
Description
Technical Field
The invention relates to the technical field of numerical control machining equipment, in particular to a noise reduction device for a numerical control machining center.
Background
The noise of the numerical control machining center can be divided into controllable noise and uncontrollable noise, wherein the controllable noise is mainly in close relation with factors such as a machine tool structure, arrangement of a mechanical transmission system, design of a transmission piece and the like, so that the controllable noise can reduce noise sound volume through reasonable design, installation and maintenance, reasonable selection of cutters, cutting parameters, cutting programs and the like, and the noise generated by the phenomenon is stable under the condition that machining is stably carried out.
In addition, uncontrollable noise is also encountered in the machining process, for example, when a plane of a thinner workpiece is milled, the milling cutter rotates to enable cutter teeth of each column body to generate impact milling force (namely, each cutter tooth generates impact when contacting with a workpiece part in turn), each cutter tooth continuously impacts the workpiece, so that the workpiece generates tiny high-frequency vibration along the direction perpendicular to the milling direction, and accordingly, the workpiece vibration generates air noise, and is combined with the machining noise to form short and strong noise, and in the feeding process, if the cutter is subjected to a defect part (such as a surface bump) on the surface of the workpiece, the restraining force of cutter feeding is suddenly changed, further, the cutter and the defect part of the workpiece are caused to generate larger impact, so that the amplitude of the thin-wall workpiece is increased, the vibration frequency is accelerated, the machining noise is further increased, and the prior noise reduction technology cannot eliminate the uncontrollable noise by reasonably selecting the cutter or setting reasonable machining parameters due to the randomness of defect positions.
For the noise treatment in the milling process, at present, a noise reduction cover is installed outside a processing area, and noise is reduced by reasonably selecting a cutter, cutting parameters, a cutting program and the like, and in the milling process, the noise is restrained from being transmitted outwards through the noise reduction cover, so that the noise outside a machine is in a range which can be accepted by preset staff, but due to the generation of uncontrollable noise, even if the setting of the noise reduction cover is adopted, the uncontrollable noise and the controllable noise are combined into intense noise, and the combined intense noise can intermittently break through the noise reduction limit of the noise reduction cover, so that the noise outside the machine exceeds the preset safe noise range, and further the body discomfort of the staff is caused.
Disclosure of Invention
The invention provides a noise reduction device for a numerical control machining center, which aims to solve the problems that: in the prior art, when a thin-wall workpiece is milled, the impact of cutter teeth of a cutter easily causes the vibration of the workpiece to generate noise.
In order to achieve the above purpose, the present invention provides the following technical solutions: the noise reduction device for the numerical control machining center comprises a cutting unit for milling the side wall of the thin-wall cavity workpiece, a workpiece fixing unit for fixing the thin-wall cavity workpiece, and a supporting noise reduction unit for bonding and supporting the side wall of the thin-wall cavity workpiece to increase the strength of the workpiece;
the workpiece fixing unit comprises a bearing base for placing a thin-wall cavity workpiece, and the thin-wall cavity workpiece is fixedly arranged on the bearing base;
the cutting unit comprises a milling cutter for milling the outer wall of the thin-wall cavity workpiece and a machine tool spindle system for driving the milling cutter to rotate;
the supporting type noise reduction unit comprises a reinforcing supporting structure and a movable connecting mechanism, wherein the movable connecting mechanism is used for connecting the reinforcing supporting structure to the bearing base, the reinforcing supporting structure is matched with the opposite face of the side wall machining face of the thin-wall cavity workpiece, the movable connecting mechanism adjusts the corresponding position of the reinforcing supporting structure when the workpiece machining plane is replaced, and when the side wall of the workpiece is milled, the movable connecting mechanism drives the reinforcing supporting structure to be attached to the opposite face of the side wall machining face of the thin-wall cavity workpiece and keep fixed, so that a supporting force for counteracting the impact force of a cutter tooth is provided for the side wall of the workpiece.
In a preferred embodiment, the machining center further comprises a feed drive assembly for driving the milling tool and the thin-walled cavity workpiece to feed in relative motion, the feed drive assembly comprising a Z-axis linear drive mechanism for driving the machine tool spindle system to move along the Z-axis, an X-axis linear drive mechanism and a Y-axis linear drive mechanism for driving the load-bearing base to move along the X-axis and the Y-axis, respectively.
In a preferred embodiment, the reinforcing support structure is a support plate structure adapted to the opposite side of the work piece processing plane, the movable connection mechanism comprises a surrounding rail structure mounted on the carrying base and arranged around the work piece, a slide seat structure slidably arranged on the surrounding rail structure, a vertical support structure fixedly arranged on the slide seat structure, a transverse support structure slidably arranged on the vertical support structure, and an extension support structure slidably arranged on the transverse support structure, and the support plate structure is mounted on the extension support structure.
In a preferred embodiment, the movable connection mechanism further comprises a rail drive structure for driving the carriage structure to move on the surrounding rail structure, a vertical linear drive for driving the lateral support structure to move vertically on the vertical support structure, and a lateral linear drive for driving the extension support structure to move laterally on the lateral support structure.
In a preferred embodiment, the track driving structure comprises a rack structure paved on a surrounding type guide rail structure and a motor gear structure installed on the slide seat structure, the motor driving gear rotates to be matched with the rack to realize the movable driving of the driving slide seat structure, the vertical linear driver and the horizontal linear driver are all screw rod driving structures, the screw rod driving structures comprise linear guide rails, sliding blocks and driving motors, the sliding blocks and the linear guide rails are slidably installed, screw rods matched with the sliding blocks are arranged in the linear guide rails, the driving motors drive the sliding blocks and the linear guide rails to move relatively through driving the screw rods, and the sliding blocks and the linear guide rails are respectively arranged on two structures needing to move mutually to realize the driving of the driving horizontal supporting structure and the extending supporting structure.
In a preferred embodiment, the support plate structure is an L-shaped plate structure, the support plate structure is rotatably mounted with the end part of the extension support structure through a rotating pin shaft, and support plates which are adapted to the inner wall and the outer wall of the thin-wall cavity workpiece are respectively mounted on two outer side surfaces perpendicular to each other of the support plate structure.
In a preferred embodiment, the interior of the support plate structure is filled with a layer of sound insulating material, which is a sound absorbing sponge structure.
In a preferred embodiment, the mating surface of the supporting plate structure and the workpiece is coated with an adhesive layer for suppressing the vibration frequency of the workpiece.
In a preferred embodiment, the adhesive layer is thermal adhesive, and the heater is installed inside the supporting plate structure.
In a preferred embodiment, a cooling system for cooling the surface of the supporting plate structure is arranged in the supporting plate structure, and the cooling system is a water cooling system, namely a water cooling pipe is arranged in the supporting plate structure, and circulating cold water is circulated in the pipe for cooling, so that the adhesive layer is cooled, and the adhesive layer is recovered to be used later.
In a preferred embodiment, the machining center further includes a sound-proof shield assembly disposed outside the cutting unit and the workpiece fixing unit, the side plate structures of the sound-proof shield assembly are hollow structures, and sound-absorbing materials are filled in the side plate structures of the sound-proof shield assembly.
The beneficial effects are that:
according to the invention, the strength of the processing position at the position is enhanced by supporting the thin-wall structure by the reinforced supporting structure, the amplitude of elastic vibration of the structure at the position is reduced, noise is reduced, the side wall at the position is prevented from vibrating along with other side walls of the workpiece, the noise is further reduced, and the noise reduction effect is realized;
according to the invention, the adhesive layer is coated on the surface of the supporting plate structure to absorb the side wall of the workpiece, so that the side wall of the workpiece is prevented from deforming to the side far away from the supporting plate structure, meanwhile, good protection can be provided between the side wall of the workpiece and the supporting plate structure, damage to the inner wall of the workpiece is avoided, the flexibility of the adhesive layer can buffer the amplitude, and the associated vibration of the side wall of the workpiece and the supporting plate structure is further reduced;
according to the invention, the thermal bonding glue is selected, after the processing is finished, the surface of the supporting plate structure is heated, so that the bonding glue layer loses viscosity and is separated from the side wall of a workpiece, the separation and position replacement of the supporting plate structure are facilitated, and meanwhile, a water cooling system can be arranged in the supporting plate structure and used for cooling the bonding glue layer to help the bonding glue layer recover viscosity for subsequent use.
Drawings
FIG. 1 is a schematic diagram of the overall structure of the present invention;
FIG. 2 is a schematic view of the sound-insulating protective cover assembly of the present invention removed;
FIG. 3 is a schematic diagram of the micro vibration deformation of the thin-walled workpiece of the present invention when impacted by the cutter teeth;
FIG. 4 is an analysis chart of milling state after supporting a thin wall by using a reinforced supporting structure;
FIG. 5 is a schematic view of the present invention for machining an inner wall of a workpiece;
FIG. 6 is a schematic view of the present invention for machining an outer wall of a workpiece;
FIG. 7 is a structural view of a support plate structure of the present invention;
FIG. 8 is a schematic view showing a processing state after an adhesive layer is added in the invention;
FIG. 9 is a schematic illustration of the invention for spraying an adhesive layer on a support plate structure.
The reference numerals are: 100. a cutting unit; 200. a workpiece fixing unit; 300. a supporting noise reduction unit; 400. a sound-insulating protective cover assembly; 500. a Z-axis linear driving mechanism; 600. an X-axis linear driving mechanism; 700. a Y-axis linear driving mechanism; 11. a machine tool spindle system; 12. milling tools; 21. a load-bearing base; 22. a clamp mechanism; 31. reinforcing the support structure; 311. a support plate structure; 312. a sound insulation material layer; 313. an adhesive layer; 314. a heater; 32. a movable connection mechanism; 321. a surrounding type guide rail structure; 322. a slide structure; 323. a vertical support structure; 324. a lateral support structure; 325. an extension support structure; a. thin wall cavity work piece.
Detailed Description
The following description of the embodiments of the present invention will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present invention, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
Referring to fig. 1 to 9 of the drawings, a noise reduction device for a numerical control machining center includes a cutting unit 100 for milling a sidewall of a thin-walled cavity workpiece, a workpiece fixing unit 200 for fixing the thin-walled cavity workpiece a, and a supporting noise reduction unit 300 for supporting the sidewall of the thin-walled cavity workpiece a to increase the strength of the workpiece;
the workpiece fixing unit 200 comprises a bearing base 21 for placing the thin-wall cavity workpiece a and a clamp mechanism 22 for positioning and fixing the thin-wall cavity workpiece a, wherein the thin-wall cavity workpiece a is fixedly arranged on the bearing base 21 through the clamp mechanism 22;
the cutting unit comprises a common end mill of a milling cutter 12 for milling the outer wall of the thin-wall cavity workpiece and a machine tool spindle system 11 for driving the milling cutter 12 to rotate;
it should be noted that, because the numerical control machining center can change the cutter through the tool changing system to realize more processing work, and thin wall cavity work piece need process other positions except milling the outer wall surface, when using the anchor clamps to fix the work piece, need make the most of area of work piece expose, consequently, can't strengthen the support to the lateral wall of work piece through setting up the anchor clamps that grip area is bigger, can only fix the bottom plane of work piece on bearing the base 21, so, this embodiment provides one kind can laminate the opposite face of work piece lateral wall machined surface when milling the work piece inner and outer wall, strengthen the support to the work piece lateral wall, and the bearing structure that the position can change along with it when the machined plane changes, specific scheme is as follows:
the supporting noise reduction unit 300 includes a reinforcing support structure 31 (which is attached to and supported by the opposite surface of the side wall of the workpiece) and a movable connection mechanism 32 for connecting the reinforcing support structure 31 to the carrying base 21, wherein the reinforcing support structure 31 is adapted to the opposite surface of the side wall of the workpiece a of the thin-walled cavity, the movable connection mechanism 32 adjusts the corresponding position of the reinforcing support structure 31 when the machining plane is changed, for example, when the machining plane is changed from one side of the outer wall of the workpiece to the other side, the movable connection mechanism 32 adjusts the reinforcing support structure 31 to move to the inner wall of the other side, when the machining plane is changed from the outer wall to the inner wall, the movable connection mechanism 32 adjusts the reinforcing support structure 31 to move to the outer wall corresponding to the workpiece, and when the side wall of the workpiece is milled, the movable connection mechanism 32 drives the reinforcing support structure 31 to attach to the opposite surface of the workpiece a of the thin-walled cavity (which is formed integrally with the workpiece a of the thin-walled cavity, so as to increase the wall thickness, strengthen the overall strength of the workpiece, reduce the vibration of the workpiece, and reduce the noise generation of the workpiece body) to provide a supporting force for counteracting the tooth impact force of the workpiece side wall.
The machining center further includes a feed drive assembly for driving the milling tool 12 in relative motion with the thin-walled cavity workpiece a, the feed drive assembly including a Z-axis linear drive mechanism 500 for driving the machine tool spindle system 11 in motion along the Z-axis, an X-axis linear drive mechanism 600 for driving the carrier base 21 in motion along the X-axis and the Y-axis, respectively, and a Y-axis linear drive mechanism 700 (the above-described drive mechanisms are stereoscopic motion drive systems commonly used in machining, and this embodiment is not described in detail).
The reinforcing support structure 31 is a support plate structure 311, the support plate structure 311 is adapted to the opposite surface of the workpiece processing plane, the movable connection mechanism 32 comprises a surrounding guide rail structure 321 mounted on the bearing base 21 and arranged around the workpiece, a slide seat structure 322 slidably arranged on the surrounding guide rail structure 321, a vertical support structure 323 fixedly mounted on the slide seat structure 322, a transverse support structure 324 slidably arranged on the vertical support structure 323, and an extension support structure 325 slidably arranged on the transverse support structure 324, and the support plate structure 311 is mounted on the extension support structure 325.
Further, to realize motion control of the reinforcing support structure 31, the movable connection mechanism 32 further includes a track driving structure (for example, a typical rack-and-pinion driving structure) for driving the slide structure 322 to move on the surrounding type guide rail structure 321, a vertical linear driver for driving the horizontal support structure 324 to move vertically on the vertical support structure 323, and a horizontal linear driver for driving the extension support structure 325 to move horizontally on the horizontal support structure 324, where the track driving structure is composed of a rack structure laid on the surrounding type guide rail structure 321 and a motor gear structure mounted on the slide structure 322, the motor driving gear is matched with the rack to realize motion driving of the driving slide structure 322, the vertical linear driver and the horizontal linear driver are all screw driving structures, the screw driving structures include a linear guide rail, a slider and a driving motor, the slider and the linear guide rail are slidably mounted, the screw driving motor is used for driving the screw to rotate, and realizing motion driving of the slider and the linear guide rail, and the slider and the linear guide rail are respectively on two structures requiring mutual motion to realize driving of the above-mentioned driving horizontal support structure 324 and extension support structure 325.
In this embodiment, the implementation scenario specifically includes: after the thin-wall cavity workpiece a is mounted on the bearing base 21, a machining path of the milling cutter 12 is defined by a machining center according to a machining program, meanwhile, a driving path of the reinforcing support structure 31 by the movable connecting mechanism 32 is defined, the vibration amplitude of elastic vibration of the reinforcing support structure 31 is reduced by adjusting the movement of the sliding seat structure 322 on the surrounding type guide rail structure 321, the movement of the transverse support structure 324 on the vertical support structure 323 and the movement of the extending support structure 325 on the transverse support structure 324, so that the position adjustment driving of the reinforcing support structure 31 is realized, when the milling cutter 12 mills the outer wall of the thin-wall cavity workpiece a, the reinforcing support structure 31 is adjusted to extend into the inner wall of the inner corresponding machining surface of the thin-wall cavity workpiece a to be tightly attached to the side wall of the workpiece, and then the machine tool spindle system 11 is started to drive the milling cutter 12 to carry out milling machining, and the supporting of the thin-wall structure is carried out by the reinforcing support structure 31, so that the strength of the machining position of the thin-wall structure is enhanced, the vibration amplitude of the structure is reduced, the noise is reduced, the side wall of the part is further prevented from being accompanied with the vibration of other side walls of the workpiece, the noise is further reduced, the noise is reduced, and the noise is simultaneously.
Based on the above technical scheme, the requirements of the inner and outer wall structures of part of the workpiece are different, and the supporting surfaces of the corresponding supporting plate structure 311 are also different, so this embodiment also provides a supporting plate structure 311 with high adaptability, the supporting plate structure 311 is an L-shaped plate structure, the supporting plate structure 311 is rotatably mounted with the end of the extending supporting structure 325 through a rotating pin, the supporting plate structure 311 can rotate along the rotating pin, the parts adapting to the side wall of the workpiece are replaced, for example, one surface of the supporting plate structure 311 is used when supporting the inner wall of the workpiece, the other surface is used when supporting the outer wall of the workpiece, the supporting plates adapting to the inner wall and the outer wall of the thin-wall cavity workpiece a are respectively mounted on two mutually perpendicular outer sides of the supporting plate structure 311, and the supporting plates are connected with the supporting plate structure 311 through bolts, so that the disassembly and the replacement are convenient; the device can be provided with more processing devices, quick-release mechanisms such as buckles can be used, and the supporting plate can be automatically replaced by referring to a cutter replacing system of a processing center.
The inside of the supporting plate structure 311 is filled with a sound insulation material layer 312, and the sound insulation material layer 312 is a sound absorption sponge structure for reducing the propagation of cutting noise on the movable connecting mechanism 32.
It should be noted that, in the above technical scheme, through the support of the reinforced support structure 31, the impact generated by the cutter tooth during the operation of the milling cutter 12 can be counteracted, the deformation of the side wall of the workpiece to the side far away from the cutter tooth is avoided, but due to the release of the inner energy of the cutter tooth away from the side wall of the workpiece, the side wall of the workpiece can also generate micro deformation in the direction far away from the side of the reinforced support structure 31, so as to further reduce the micro vibration deformation in the direction, and the embodiment further provides the following technical scheme:
further, the adhesive layer 313 is coated on the matching surface of the supporting plate structure 311 and the workpiece, when the supporting plate structure 311 is attached to the side wall of the workpiece, besides providing powerful support for the side wall, the adhesive layer 313 can be used for absorbing the side wall of the workpiece, so as to avoid deformation of the side wall of the workpiece to the side far away from the supporting plate structure 311, meanwhile, the adhesive layer 313 has flexibility, good protection can be provided between the side wall of the workpiece and the supporting plate structure 311, damage to the inner wall of the workpiece is avoided, on the basis of the embodiment, the amplitude of the workpiece is limited, uncontrollable noise generated by vibration of the workpiece is restrained, but the vibration frequency of the workpiece is accelerated due to the limitation of the amplitude space, therefore, when the workpiece vibrates, the outer wall of the workpiece is intermittently contacted with the adhesive layer 313, and after the workpiece contacts with the adhesive layer 313, since the workpiece continues to vibrate, the adhesive layer 313 can inhibit the workpiece from moving in the opposite direction, consume the vibration energy of the workpiece, slow down the vibration frequency of the workpiece, be beneficial to further reducing noise and further reduce the associated vibration of the side wall of the workpiece and the supporting plate structure 311, the adhesive layer 313 is selected from thermal adhesive glue, concretely, the recyclable thermal adhesive disclosed in a chinese patent with publication No. CN114605943B can be referred to, at a high temperature above 100 ℃, the glue can automatically fall off from the adhesive, the heater 314 is installed in the supporting plate structure 311, after finishing processing, the surface of the supporting plate structure 311 is heated to lose the adhesiveness of the adhesive layer 313, the bonding surface of the adhesive layer 313 and the supporting plate structure 311 is provided with non-thermal adhesive, so that the adhesive layer 313 is prevented from separating from the supporting plate structure 311 after heating, and therefore the adhesive layer 313 is only separated from the side wall of the workpiece, the support plate structure 311 is not separated, and a water cooling system can be arranged in the support plate structure 311 for cooling the adhesive layer 313 and helping the adhesive layer to recover the viscosity for subsequent use.
The machining center is still including setting up at the outside 400 of cutting unit 100 and work piece fixed unit 200, and the curb plate structure of sound insulation protection casing subassembly 400 is hollow structure, and fills sound absorbing material in the curb plate structure of sound insulation protection casing subassembly 400, adopts the mode that the cage cut off, reduces the outside transmission of other noise of machine.
Finally: the foregoing is only illustrative of the preferred embodiments of the present invention and is not to be construed as limiting the invention, but rather as various modifications, equivalent arrangements, improvements, etc., within the spirit and principles of the present invention.
Claims (7)
1. The utility model provides a numerical control machining center is with device of making an uproar falls, includes cutting unit (100) and work piece fixed unit (200) that are used for fixed thin wall cavity work piece (a) that are used for milling thin wall cavity work piece (a) lateral wall, its characterized in that: the supporting type noise reduction unit (300) is used for bonding and supporting the side wall of the thin-wall cavity workpiece (a) to increase the strength of the workpiece;
the workpiece fixing unit (200) comprises a bearing base (21), and the thin-wall cavity workpiece (a) is fixedly arranged on the bearing base (21);
the cutting unit comprises a milling cutter (12) for milling the outer wall of the thin-wall cavity workpiece and a machine tool spindle system (11) for driving the milling cutter (12) to rotate;
the supporting type noise reduction unit (300) comprises a reinforcing supporting structure (31) and a movable connecting mechanism (32) for connecting the reinforcing supporting structure (31) on the bearing base (21), wherein the reinforcing supporting structure (31) is matched with the opposite surface of the side wall processing surface of the thin-wall cavity workpiece (a), and when the side wall of the workpiece is milled, the movable connecting mechanism (32) drives the reinforcing supporting structure (31) to be adhered to and kept fixed with the opposite surface of the side wall processing surface of the thin-wall cavity workpiece (a); the machining center further comprises a feeding driving assembly for driving the milling cutter (12) and the thin-wall cavity workpiece (a) to move relatively, wherein the feeding driving assembly comprises a Z-axis linear driving mechanism (500) for driving the machine tool spindle system (11) to move along the Z axis, an X-axis linear driving mechanism (600) and a Y-axis linear driving mechanism (700) for driving the bearing base (21) to move along the X axis and the Y axis respectively;
the reinforced support structure (31) is a support plate structure (311), the support plate structure (311) is adapted to the opposite surface of a workpiece processing plane, the movable connecting mechanism (32) comprises a surrounding guide rail structure (321) which is arranged on the bearing base (21) and surrounds the workpiece, a sliding seat structure (322) which is arranged on the surrounding guide rail structure (321) in a sliding manner, a vertical support structure (323) which is fixedly arranged on the sliding seat structure (322), a transverse support structure (324) which is arranged on the vertical support structure (323) in a sliding manner and an extension support structure (325) which is arranged on the transverse support structure (324) in a sliding manner, and the support plate structure (311) is arranged on the extension support structure (325); the movable connection mechanism (32) further comprises a track driving structure for driving the sliding seat structure (322) to move on the surrounding type guide rail structure (321), a vertical linear driver for driving the transverse supporting structure (324) to vertically move on the vertical supporting structure (323) and a transverse linear driver for driving the extending supporting structure (325) to transversely move on the transverse supporting structure (324).
2. The noise reduction device for a numerical control machining center according to claim 1, wherein: the track driving structure comprises a rack structure paved on a surrounding type guide rail structure (321) and a motor gear structure arranged on a sliding seat structure (322), the vertical linear driver and the horizontal linear driver are screw rod driving structures, the screw rod driving structures comprise linear guide rails, sliding blocks and driving motors, the sliding blocks are slidably arranged on the linear guide rails, screw rods matched with the sliding blocks in a threaded mode are arranged inside the linear guide rails, and the driving motors drive the sliding blocks to move relative to the linear guide rails through driving the screw rods.
3. The noise reduction device for a numerical control machining center according to claim 2, wherein: the support plate structure (311) is an L-shaped plate structure, the support plate structure (311) is rotatably installed at the end part of the extension support structure (325) through a rotating pin shaft, and support plates which are suitable for the inner wall and the outer wall of the thin-wall cavity workpiece (a) are respectively installed on two outer side surfaces of the support plate structure (311) which are mutually perpendicular.
4. A noise reducer for a numerically controlled machining center according to claim 3, wherein: the interior of the supporting plate structure (311) is filled with a sound insulation material layer (312), and the sound insulation material layer (312) adopts a sound absorption sponge structure.
5. The noise reduction device for a numerical control machining center according to claim 4, wherein: the matching surface of the supporting plate structure (311) and the workpiece is coated with an adhesive layer (313), and the adhesive layer (313) is used for inhibiting the vibration frequency of the workpiece.
6. The noise reduction device for a numerical control machining center according to claim 5, wherein: the adhesive layer (313) is formed by thermal bonding glue, a heater (314) is arranged in the supporting plate structure (311), and a cooling system for cooling the surface of the supporting plate structure (311) is arranged in the supporting plate structure (311).
7. The noise reduction device for a numerical control machining center according to claim 6, wherein: the machining center further comprises a sound insulation protective cover assembly (400) arranged outside the cutting unit (100) and the workpiece fixing unit (200), the side plate structures of the sound insulation protective cover assembly (400) are hollow structures, and sound absorbing materials are filled in the side plate structures of the sound insulation protective cover assembly (400).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310812762.0A CN116511983B (en) | 2023-07-05 | 2023-07-05 | Noise reduction device for numerical control machining center |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310812762.0A CN116511983B (en) | 2023-07-05 | 2023-07-05 | Noise reduction device for numerical control machining center |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN116511983A CN116511983A (en) | 2023-08-01 |
| CN116511983B true CN116511983B (en) | 2023-08-22 |
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Family Applications (1)
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| JP7369216B2 (en) * | 2020-02-06 | 2023-10-25 | 株式会社日進製作所 | cutting equipment |
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| CN114453895A (en) * | 2021-09-07 | 2022-05-10 | 盐城工学院 | Milling and drilling composite numerical control machine tool for processing open type thin-wall workpiece |
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