CN107825305A - Consolidated metal binding agent sand wheel, device and preparation technology with inner flow passage structure - Google Patents

Consolidated metal binding agent sand wheel, device and preparation technology with inner flow passage structure Download PDF

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Publication number
CN107825305A
CN107825305A CN201711296743.8A CN201711296743A CN107825305A CN 107825305 A CN107825305 A CN 107825305A CN 201711296743 A CN201711296743 A CN 201711296743A CN 107825305 A CN107825305 A CN 107825305A
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CN
China
Prior art keywords
flow passage
wheel
passage structure
inner flow
laser
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Pending
Application number
CN201711296743.8A
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Chinese (zh)
Inventor
李学崑
张树波
郭国强
田晨晨
王立平
刘辛军
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Tsinghua University
Shanghai Space Precision Machinery Research Institute
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Tsinghua University
Shanghai Space Precision Machinery Research Institute
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Application filed by Tsinghua University, Shanghai Space Precision Machinery Research Institute filed Critical Tsinghua University
Priority to CN201711296743.8A priority Critical patent/CN107825305A/en
Publication of CN107825305A publication Critical patent/CN107825305A/en
Pending legal-status Critical Current

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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B24—GRINDING; POLISHING
    • B24D—TOOLS FOR GRINDING, BUFFING OR SHARPENING
    • B24D7/00—Bonded abrasive wheels, or wheels with inserted abrasive blocks, designed for acting otherwise than only by their periphery, e.g. by the front face; Bushings or mountings therefor
    • B24D7/10—Bonded abrasive wheels, or wheels with inserted abrasive blocks, designed for acting otherwise than only by their periphery, e.g. by the front face; Bushings or mountings therefor with cooling provisions
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B22—CASTING; POWDER METALLURGY
    • B22F—WORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER; APPARATUS OR DEVICES SPECIALLY ADAPTED FOR METALLIC POWDER
    • B22F10/00—Additive manufacturing of workpieces or articles from metallic powder
    • B22F10/20—Direct sintering or melting
    • B22F10/28—Powder bed fusion, e.g. selective laser melting [SLM] or electron beam melting [EBM]
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B22—CASTING; POWDER METALLURGY
    • B22F—WORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER; APPARATUS OR DEVICES SPECIALLY ADAPTED FOR METALLIC POWDER
    • B22F10/00—Additive manufacturing of workpieces or articles from metallic powder
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B22—CASTING; POWDER METALLURGY
    • B22F—WORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER; APPARATUS OR DEVICES SPECIALLY ADAPTED FOR METALLIC POWDER
    • B22F10/00—Additive manufacturing of workpieces or articles from metallic powder
    • B22F10/30—Process control
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B22—CASTING; POWDER METALLURGY
    • B22F—WORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER; APPARATUS OR DEVICES SPECIALLY ADAPTED FOR METALLIC POWDER
    • B22F10/00—Additive manufacturing of workpieces or articles from metallic powder
    • B22F10/30—Process control
    • B22F10/32—Process control of the atmosphere, e.g. composition or pressure in a building chamber
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B22—CASTING; POWDER METALLURGY
    • B22F—WORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER; APPARATUS OR DEVICES SPECIALLY ADAPTED FOR METALLIC POWDER
    • B22F10/00—Additive manufacturing of workpieces or articles from metallic powder
    • B22F10/30—Process control
    • B22F10/36—Process control of energy beam parameters
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B22—CASTING; POWDER METALLURGY
    • B22F—WORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER; APPARATUS OR DEVICES SPECIALLY ADAPTED FOR METALLIC POWDER
    • B22F10/00—Additive manufacturing of workpieces or articles from metallic powder
    • B22F10/70—Recycling
    • B22F10/73—Recycling of powder
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B22—CASTING; POWDER METALLURGY
    • B22F—WORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER; APPARATUS OR DEVICES SPECIALLY ADAPTED FOR METALLIC POWDER
    • B22F12/00—Apparatus or devices specially adapted for additive manufacturing; Auxiliary means for additive manufacturing; Combinations of additive manufacturing apparatus or devices with other processing apparatus or devices
    • B22F12/40—Radiation means
    • B22F12/49—Scanners
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B22—CASTING; POWDER METALLURGY
    • B22F—WORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER; APPARATUS OR DEVICES SPECIALLY ADAPTED FOR METALLIC POWDER
    • B22F5/00—Manufacture of workpieces or articles from metallic powder characterised by the special shape of the product
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B24—GRINDING; POLISHING
    • B24D—TOOLS FOR GRINDING, BUFFING OR SHARPENING
    • B24D18/00—Manufacture of grinding tools or other grinding devices, e.g. wheels, not otherwise provided for
    • B24D18/009—Tools not otherwise provided for
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B24—GRINDING; POLISHING
    • B24D—TOOLS FOR GRINDING, BUFFING OR SHARPENING
    • B24D3/00—Physical features of abrasive bodies, or sheets, e.g. abrasive surfaces of special nature; Abrasive bodies or sheets characterised by their constituents
    • B24D3/02—Physical features of abrasive bodies, or sheets, e.g. abrasive surfaces of special nature; Abrasive bodies or sheets characterised by their constituents the constituent being used as bonding agent
    • B24D3/04—Physical features of abrasive bodies, or sheets, e.g. abrasive surfaces of special nature; Abrasive bodies or sheets characterised by their constituents the constituent being used as bonding agent and being essentially inorganic
    • B24D3/06—Physical features of abrasive bodies, or sheets, e.g. abrasive surfaces of special nature; Abrasive bodies or sheets characterised by their constituents the constituent being used as bonding agent and being essentially inorganic metallic or mixture of metals with ceramic materials, e.g. hard metals, "cermets", cements
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B33—ADDITIVE MANUFACTURING TECHNOLOGY
    • B33Y—ADDITIVE MANUFACTURING, i.e. MANUFACTURING OF THREE-DIMENSIONAL [3-D] OBJECTS BY ADDITIVE DEPOSITION, ADDITIVE AGGLOMERATION OR ADDITIVE LAYERING, e.g. BY 3-D PRINTING, STEREOLITHOGRAPHY OR SELECTIVE LASER SINTERING
    • B33Y10/00—Processes of additive manufacturing
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B33—ADDITIVE MANUFACTURING TECHNOLOGY
    • B33Y—ADDITIVE MANUFACTURING, i.e. MANUFACTURING OF THREE-DIMENSIONAL [3-D] OBJECTS BY ADDITIVE DEPOSITION, ADDITIVE AGGLOMERATION OR ADDITIVE LAYERING, e.g. BY 3-D PRINTING, STEREOLITHOGRAPHY OR SELECTIVE LASER SINTERING
    • B33Y30/00—Apparatus for additive manufacturing; Details thereof or accessories therefor
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B22—CASTING; POWDER METALLURGY
    • B22F—WORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER; APPARATUS OR DEVICES SPECIALLY ADAPTED FOR METALLIC POWDER
    • B22F5/00—Manufacture of workpieces or articles from metallic powder characterised by the special shape of the product
    • B22F2005/001—Cutting tools, earth boring or grinding tool other than table ware
    • 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
    • Y02P10/00—Technologies related to metal processing
    • Y02P10/25—Process efficiency

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  • Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Chemical & Material Sciences (AREA)
  • Materials Engineering (AREA)
  • Automation & Control Theory (AREA)
  • Mechanical Engineering (AREA)
  • Toxicology (AREA)
  • General Health & Medical Sciences (AREA)
  • Physics & Mathematics (AREA)
  • Plasma & Fusion (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Sustainable Development (AREA)
  • Health & Medical Sciences (AREA)
  • Ceramic Engineering (AREA)
  • Inorganic Chemistry (AREA)
  • Polishing Bodies And Polishing Tools (AREA)

Abstract

The invention discloses a kind of consolidated metal binding agent sand wheel, device and preparation technology with inner flow passage structure, the consolidated metal binding agent sand wheel with inner flow passage structure includes：Grinding wheel base body；Wheel grinding main body, the wheel grinding main body is located at the outside of the grinding wheel base body, and the wheel grinding main body is formed with inner flow passage structure.According to the consolidated metal binding agent sand wheel with inner flow passage structure of the present invention, by setting inner flow passage structure in wheel grinding main body, thereby, it is possible to improve the cooling capacity of emery wheel, heat exchange efficiency is improved, prevents from being ground workpiece burn.

Description

Consolidated metal binding agent sand wheel, device and preparation technology with inner flow passage structure
Technical field
The present invention relates to grinding and increases material manufacturing technology field, more particularly to a kind of consolidating with inner flow passage structure Tie metal bonded wheel, manufacture the device of the consolidated metal binding agent sand wheel with inner flow passage structure and with inner flow passage structure Consolidated metal binding agent sand wheel preparation technology.
Background technology
In correlation technique, traditional consolidated metal binding agent sand wheel manufacturing process is mainly hot pressing formation process.It is first in pressure sintering First metallic bond abrasive particle is well mixed according to a certain percentage with bonding agent, applied on the basis of natural packing batch mixing certain Pressure and temperature, final molding.
However, the metal bonded wheel stomata occlusion of conventional thermocompression technique manufacture, and do not have between stomata and stomata Form effective flow passage structure, the grinding fluid that this inaccessible stomata have impact on during wheel grinding enters grinding arc area, drops Low heat exchange efficiency.And emery wheel produces substantial amounts of heat in grinding process, the emery wheel of no flow passage structure can cause 90% with On heat be passed to workpiece, easily cause be ground workpiece burn.
The content of the invention
It is contemplated that at least solves one of technical problem present in prior art.Therefore, the present invention proposes a kind of tool There are the consolidated metal binding agent sand wheel of inner flow passage structure, the cooling of the consolidated metal binding agent sand wheel with inner flow passage structure Ability is improved and good effect of heat exchange, is advantageous to avoid grinding burn.
The present invention also proposes a kind of device for manufacturing the consolidated metal binding agent sand wheel with inner flow passage structure.
The present invention proposes a kind of preparation technology of the consolidated metal binding agent sand wheel with inner flow passage structure again.
The consolidated metal binding agent sand wheel with inner flow passage structure of embodiment according to a first aspect of the present invention, including：Sand Take turns matrix；Wheel grinding main body, the wheel grinding main body are located at the outside of the grinding wheel base body, and the wheel grinding main body Formed with inner flow passage structure.
Consolidated metal binding agent sand wheel with inner flow passage structure according to embodiments of the present invention, by wheel grinding master Inner flow passage structure is set on body, thereby, it is possible to improve the cooling capacity of emery wheel, improves heat exchange efficiency, prevents from being ground workpiece burn.
In addition, the consolidated metal binding agent sand wheel according to the above embodiment of the present invention with inner flow passage structure is also with such as Additional technical characteristic down：
According to some embodiments of the present invention, the inner flow passage structure is configured to the cylinder of arranged crosswise, and described A diameter of 2 millimeters to 4 millimeters of inner flow passage structure.
According to some embodiments of the present invention, the inner flow passage structure is configured to the polygon of arranged crosswise.
According to some embodiments of the present invention, in the end face and outer surface of the wheel grinding main body at least one at be provided with Flow passage openings, the flow passage openings and the inner flow passage fabric connectivity.
The dress of consolidated metal binding agent sand wheel of the manufacture with inner flow passage structure of embodiment according to a second aspect of the present invention Put, described device includes：Gas cleaning plant, the gas cleaning plant include gas cleaning plant main body and circulation line； Manufacturing equipment main body, the manufacturing equipment main body are connected with the circulation line, and the manufacturing equipment main body includes：Working chamber Body, the working cavity are connected with the circulation line, and powdering scraper plate is provided with the working cavity；Laser scanning system, institute Laser scanning system is stated with the working cavity to be connected；Control system, the control system scrape partitioned signal transmission with the powdering To drive the powdering scraper plate to move left and right；Powder conveying device, the powder conveying device are included described in powder feeding case and driving The powder feeding piston of powder feeding case；Powder recovering device, the powder recovering device include Powder Recovery case；And man-machine interaction circle Face.
Further, laser sintered platform is provided with the working cavity, formed with first on the laser sintered platform Notch and the second notch, the laser sintered platform are provided with the powder feeding piston and shaping piston, and the powder feeding piston is located at In first notch and removable up and down, it is interior and removable up and down that the shaping piston is located at second notch；Wherein, institute State and the powder feeding case is limited between the upper surface of powder feeding piston and first notch, the powdering scraper plate is located at the laser The upper surface of sintering platform；The movable forming is provided with formed substrates beyond the Great Wall, and the consolidated metal binding agent sand wheel is formed described On formed substrates.
Further, the laser scanning system includes：Laser, the laser are used to launch LASER Light Source；Shake Mirror system, one end of the galvanometer system is connected with the laser and the other end is relative with the formed substrates.
The preparation work of the consolidated metal binding agent sand wheel with inner flow passage structure of embodiment according to a third aspect of the present invention Skill, comprise the following steps：S1：Abrasive particle, metal dust, filler are mixed to form batch mixing；S2：There is interior stream by what design was completed The consolidated metal binding agent sand wheel parameter of road structure is imported in manufacture device, the batch mixing is added into powder feeding case, and set and swash Light sintering process parameter；S3：The isolating door of working cavity is closed, opens gas cleaning plant, is filled to working cavity circulation Enter at least one of nitrogen or argon gas；S4：Start the laser；S5：Control system control powder feeding piston rises one section Distance, powdering scraper plate are moved to Powder Recovery case by high order end and are moved to high order end by Powder Recovery case again, and laser is via galvanometer System is sintered to current powdering layer-selective, and shaping piston declines a segment distance, and unnecessary powder is sent into powder collection box；S6： Repeat step S5, completed until prepared by wheel grinding main body；S7：Processing grinding wheel matrix, and assemble wheel grinding main body with it is described Grinding wheel base body；S8：Metal bonded wheel finishing is put the first edge on a knife or a pair of scissors.
Further, the batch mixing includes abrasive particle, metal dust, filler；The abrasive particle includes diamond abrasive grain and stood At least one of square boron nitride abrasive grain, wear particle concentration are 10%~200%；The metal dust include bronze, cobalt, nickel, iron, At least one of aluminium；The filler is at least one of tungsten carbide, carborundum, graphite.Wherein, the abrasive particle is provided with plating Layer, and grit size is 23 μm~200 μm.
Specifically, laser sintered parameter includes：Power 10W~500W of laser is set；Powder layer thickness is set 0.02 Between~0.5mm；Linear scanning velocity is set between 100mm/s~7000mm/s；Linear forming speed is set in 10mm/s Between~3000mm/s；The oxygen concentration of working cavity is set to be less than 100ppm；Atmosphere is molded under conditions of circularly purifying, dust removal efficiency More than 98%.
The additional aspect and advantage of the present invention will be set forth in part in the description, and will partly become from the following description Obtain substantially, or recognized by the practice of the present invention.
Brief description of the drawings
The above-mentioned and/or additional aspect and advantage of the present invention will become in the description from combination accompanying drawings below to embodiment Substantially and it is readily appreciated that, wherein：
Fig. 1 is a signal of the consolidated metal binding agent sand wheel with inner flow passage structure according to embodiments of the present invention Figure；
Fig. 2 is that the microstructure of the consolidated metal binding agent sand wheel with inner flow passage structure according to embodiments of the present invention is shown It is intended to；
Fig. 3 is showing for consolidated metal binding agent sand wheel device of the manufacture with inner flow passage structure according to embodiments of the present invention It is intended to；
Fig. 4 is the work of consolidated metal binding agent sand wheel device of the manufacture with inner flow passage structure according to embodiments of the present invention Make the schematic diagram of cavity.
Reference：
Consolidated metal binding agent sand wheel 100 with inner flow passage structure,
Grinding wheel base body 1,
Wheel grinding main body 2, inner flow passage structure 21, flow passage openings 22,
Device 200,
Gas cleaning plant 210, gas cleaning plant main body 211, circulation line 212,
Manufacturing equipment main body 220, working cavity 221, powdering scraper plate 2211, laser sintered platform 2212, laser scanning system System 222, laser 2221, galvanometer system 2222, control system 223, powder conveying device 224, powder feeding case 2241, powder feeding piston 2242, powder recovering device 225, human-computer interaction interface 226, it is molded piston 2213, formed substrates 2214.
Embodiment
Embodiments of the invention are described below in detail, the example of the embodiment is shown in the drawings, wherein from beginning to end Same or similar label represents same or similar element or the element with same or like function.Below with reference to attached The embodiment of figure description is exemplary, it is intended to for explaining the present invention, and is not considered as limiting the invention.
In the description of the invention, it is to be understood that term " " center ", " on ", " under ", "left", "right", " level ", The orientation or position relationship of the instructions such as " top ", " bottom " are based on orientation shown in the drawings or position relationship, are for only for ease of and retouch State the present invention and simplify description, rather than indicate or imply that signified device or element there must be specific orientation, with specific Azimuth configuration and operation, therefore be not considered as limiting the invention.In addition, define " first ", the feature of " second " It can express or implicitly include one or more this feature.In the description of the invention, unless otherwise indicated, it is " more It is individual " it is meant that two or more.
In the description of the invention, it is necessary to illustrate, unless otherwise clearly defined and limited, term " installation ", " phase Even ", " connection " should be interpreted broadly, for example, it may be being fixedly connected or being detachably connected, or be integrally connected；Can To be mechanical connection or electrical connection；Can be joined directly together, can also be indirectly connected by intermediary, Ke Yishi The connection of two element internals.For the ordinary skill in the art, with concrete condition above-mentioned term can be understood at this Concrete meaning in invention.
Increases material manufacturing technology is a kind of processing method for starting the 1980s to rise, wherein selective laser sintering skill Art is the technique of conventional manufacturing complex shapes part.Selective Laser Sintering be according to Computer Aided Design Model, Using powder thin layer of the superlaser sintering in loose condition (of surface), successively powdering, successively accumulate by way of, formed any multiple The density three-dimensional part of miscellaneous shape.Laser sintering process uses powder sintered shaping mechanism, can manufacture nonmetallic, metal Even composite material parts, have good formed precision and comprehensive mechanical performance.Selective Laser Sintering has material Utilization rate is high, and the manufacturing cycle is short, and cost is low, is particularly suitable for part complexity, the field of specific customization.
Grinding is used as a kind of cutting way, is widely used in the precise and ultraprecise machinings of key components and parts, such as roll, Level Four rod base, wafer, camshaft, gear etc..Grinding is higher to obtain generally as part cutting technology final step Surface accuracy and the accuracy of form and position.Emery wheel is to apply most grinding tools, and grinding wheel performance and its matching technique are to ensure mill Cut the key factor of processing quality.
The description consolidated metal binding agent sand wheel with inner flow passage structure according to embodiments of the present invention below in conjunction with the accompanying drawings 100.Consolidated metal binding agent sand wheel 100 utilizes powdering formula selectivity mainly with metal dust, abrasive particle, filler etc. for raw material Laser sintering technology is fabricated.
Consolidated metal binding agent sand wheel 100 with inner flow passage structure involved in the present invention is burnt by selective laser What the wheel grinding main body 2 of knot technology manufacture and the body portion of machining manufacture were assembled.
As Figure 1-Figure 4, the consolidated metal with inner flow passage structure of embodiment combines according to a first aspect of the present invention Agent emery wheel 100, including：Grinding wheel base body 1 and wheel grinding main body 2.
Specifically, wheel grinding main body 2 is located at the outside of grinding wheel base body 1, for example, in the example of fig. 1, grinding wheel base body 1 can be in hollow cylindrical shape, and wheel grinding main body 2 is located at the one of the center line of the remote grinding wheel base body 1 of grinding wheel base body 1 Side.
And wheel grinding main body 2 is formed with inner flow passage structure 21.Inner flow passage structure 21 can be by CAD Model file determines that wheel grinding main body 2 is generally formed into annular shape, and inner flow passage structure 21 can be in wheel grinding main body 2 Intersection or interlaced arrangement etc., pass through and inner flow passage structure 21 is set in wheel grinding main body 2, the favourable cooling energy for improving emery wheel Power, heat exchange efficiency is improved, prevent from being ground workpiece burn.
Consolidated metal binding agent sand wheel 100 with inner flow passage structure according to embodiments of the present invention, by being ground in emery wheel Cut and inner flow passage structure 21 is set in main body 2, thereby, it is possible to improve the cooling capacity of emery wheel, improve heat exchange efficiency, prevent from being ground work Part is burnt.
Reference picture 2 simultaneously combines Fig. 1, and according to some embodiments of the present invention, inner flow passage structure 21 can be configured to intersect The cylinder of arrangement, and a diameter of 2 millimeters to 4 millimeters of inner flow passage structure 21.Preferably, inner flow passage structure 21 is a diameter of 3 millimeters.Thus, be advantageous to the quality for mitigating wheel grinding main body 2, the structural strength for ensureing wheel grinding main body 2, improve emery wheel It is ground the heat-sinking capability of main body 2.
According to some embodiments of the present invention, inner flow passage structure 21 can also be configured to the polygon of arranged crosswise.By This, is advantageous to mitigate the quality of wheel grinding main body 2, ensures the structural strength of wheel grinding main body 2, improve wheel grinding main body 2 heat-sinking capability.
The profile of wheel grinding main body 2 can be a revolving body, and wheel grinding main body 2 can be overall manufacture It can be manufactured with burst and spliced again, inner flow passage structure 21, which is intersected, spreads all over the inside of wheel grinding main body 2, and inner flow passage structure 21 can be by It is configured to such as square, hexagon.
Reference picture 2 simultaneously combines Fig. 1, according to some embodiments of the present invention, in the end face and outer surface of wheel grinding main body 2 At least one at be provided with flow passage openings 22, flow passage openings 22 connect with inner flow passage structure 21.So that produced during wheel grinding workpiece Heat can be shed by inner flow passage structure 21 via flow passage openings 22, so, it is possible further improve emery wheel cooling capacity, Heat exchange efficiency is improved, prevents from being ground workpiece burn.
Wherein it is possible to it is to be provided with flow passage openings 22 in the end face of wheel grinding main body 2；Can also be in wheel grinding main body 2 outer surface is provided with flow passage openings 22, can also be and is equipped with flow passage openings in the end face of wheel grinding main body 2 and outer surface 22.The set location and setting form of flow passage openings 22 can be set according to adaptability is actually needed.
Reference picture 3 and Fig. 4, according to a second aspect of the present invention embodiment consolidated metal knot of the manufacture with inner flow passage structure The device 200 of mixture emery wheel, device 200 include：Gas cleaning plant 210 and manufacturing equipment main body 220.
Specifically, gas cleaning plant 210 includes gas cleaning plant main body 211 and circulation line 212；Manufacturing equipment master Body 220 is connected with circulation line 212, and protective gas can be passed through into manufacturing equipment main body 220 by circulation line 212, by This, the mixed material that can prevent from making emery wheel is oxidized, and ensures the quality of manufacture emery wheel.
Reference picture 3 and Fig. 4, manufacturing equipment main body 220 include：Working cavity 221, laser scanning system 222, control system 223rd, powder conveying device 224, powder recovering device 225 and human-computer interaction interface 226.
Working cavity 221 is connected with circulation line 212, and powdering scraper plate 2211 is provided with working cavity 221；Laser scanning system System 222 is connected with working cavity 221；Control system 223 is transmitted with the signal of powdering scraper plate 2211 to drive powdering scraper plate 2211 left Move right；Powder conveying device 224 includes powder feeding case 2241 and drives the powder feeding piston of powder feeding case 2241 (such as moving up and down) 2242；Powder recovering device 225 includes Powder Recovery case.Thus, it is easy to lead into working cavity 221 by circulation line 212 Enter purification gas (such as nitrogen, argon gas etc.), mixed material can be prevented to be oxidized, can be driven and sent by powder feeding piston 2242 Material in powder case 2241 moves up the supply for realizing material, and control system 223 controls powdering scraper plate 2211 to move left and right, then Selective sintering is carried out by laser scanning system 222 and prepares wheel grinding main body 2, unnecessary material by powdering scraper plate 2211 scrape to Recycled in Powder Recovery case.
Further, reference picture 4, are provided with laser sintered platform 2212 in working cavity 221, on laser sintered platform 2212 Formed with the first notch and the second notch, laser sintered platform 2212 is provided with powder feeding piston 2242 and shaping piston 2213, send Powder piston 2242 is located in the first notch, and powder feeding piston 2242 is removable up and down in first notch, is molded piston 2213 are located in the second notch, and it is removable up and down in second notch to be molded piston 2213.Powdering scraper plate 2211 can With the left and right translational motion in the presence of control system 223, powder feeding piston 2242 can be in control system with shaping piston 2213 Moved up and down in the presence of 223.Material can be supplied by moving up and down for powder feeding piston 2242, by being molded piston 2213 Move up and down and be easy to recycle in unnecessary material scraper to Powder Recovery case.
Wherein, powder feeding case 2241, powdering scraper plate are limited between the upper surface of powder feeding piston 2242 and first notch 2211 are located at the upper surface of laser sintered platform 2212；Shaping piston 2213 is provided with formed substrates 2214, and consolidated metal combines Agent emery wheel 100 is formed on formed substrates 2214.Control powdering scraper plate 2211 by material scraper to being molded base by control system 223 Selective sintering is carried out on body 2214 and by laser scanning system 222, completes the preparation of emery wheel.
Further, reference picture 4 and Fig. 3 is combined, laser scanning system 222 includes：Laser 2221 and galvanometer system 2222.Laser 2221 can be used for launching LASER Light Source, and one end of galvanometer system 2222 is connected with laser 2221, and shakes The other end of mirror system 2222 is relative with formed substrates 2214.Galvanometer system 2222 can receive the laser of the transmitting of laser 2221 Light source, so as to realize the sintering of emery wheel.
Wherein, galvanometer system 2222 is a kind of high accuracy, high speed being made up of driving plate and high speed swinging motor Servo-control system, it is mainly used in laser marking, body laser inner carving, light of stage control, laser boring etc..
The preparation work of the consolidated metal binding agent sand wheel with inner flow passage structure of embodiment according to a third aspect of the present invention Skill, comprise the following steps：S1：Abrasive particle, metal dust, filler are mixed to form batch mixing, the batch mixing is to prepare emery wheel mill Cut the material of main body；S2：The importing manufacture dress of the consolidated metal binding agent sand wheel parameter with inner flow passage structure completed will be designed Put in (i.e. the device of consolidated metal binding agent sand wheel of the manufacture with inner flow passage structure), batch mixing is added into powder feeding case, and set Put laser sintering process parameter；S3：The isolating door of working cavity is closed, opens gas cleaning plant, is filled to working cavity circulation Enter at least one of nitrogen or argon gas, prevent batch mixing from aoxidizing；S4：Start laser；S5：Control system controls powder feeding piston Rise a segment distance (distance of rising can be set on demand), powdering scraper plate is moved to Powder Recovery case (for example, powder by high order end The left end of collection box) high order end is moved to by Powder Recovery case again, laser burns via galvanometer system to current powdering layer-selective Knot, shaping piston decline a segment distance, and unnecessary powder is sent into powder collection box；S6：Repeat step S5, until wheel grinding master Prepared by body completes；S7：Processing grinding wheel matrix, and wheel grinding main body and grinding wheel base body are assembled, wheel grinding main body and emery wheel base Body can be connected by cohesive mode；S8：Metal bonded wheel finishing is put the first edge on a knife or a pair of scissors.It can be completed with interior by above-mentioned steps The preparation of the consolidated metal binding agent sand wheel of flow passage structure.
It is understood that above-mentioned steps are exemplary, limitation of the present invention can not be interpreted as, for example, step Rapid S1 and S2 can be with exchange sequence etc..
Further, the preparation technology of the consolidated metal binding agent sand wheel with inner flow passage structure, including in a computer It is overall as shown in figure 1, emery wheel using 3 d modeling software design emery wheel appearance profile, size and inner flow passage shape, size, emery wheel Flow passage structure as shown in Fig. 2 after the completion of export the recognizable file format of precinct laser sintering equipment；Abrasive particle, metal dust, fill out Fill agent proportionally to weigh mixing, uniform stirring is batch mixing；To have described in the importing of inner flow passage structure emery wheel three dimensional file model In the binding agent sand wheel manufacturing process equipment of inner flow passage structural metal, and the batch mixing is added into the powder feeding case, then passed through Human-computer interaction interface sets suitable laser sintering process parameter；The working cavity isolating door is closed, opens gas purification dress Put, nitrogen or argon gas are filled with to working cavity circulation.Start laser；Under control system effect, on the powder feeding piston A segment distance is risen, the powdering scraper plate is moved to low order end and moves again to high order end, and laser is via the galvanometer system to current Powdering layer-selective sinters, and shaping piston declines a segment distance, during unnecessary powder be sent into powder collection box；Until emery wheel It is ground main body and prepares completion；The grinding wheel base body is processed, and assembles the wheel grinding main body and the grinding wheel base body；Metal knot Mixture crushing is put the first edge on a knife or a pair of scissors.
Further, the batch mixing includes abrasive particle, metal dust, filler；The abrasive particle includes diamond abrasive grain and stood At least one of square boron nitride abrasive grain, wear particle concentration are 10%~200%；Metal dust is included in bronze, cobalt, nickel, iron, aluminium At least one；Metal dust also includes at least one of elements such as silver, neodymium, lead, lanthanum, cerium, molybdenum, silicon, chromium；Filler is carbon Change at least one of tungsten, carborundum, graphite.
Wherein, abrasive particle is provided with coating, and abrasive particle, which is provided with coating, can improve the adhesion strength of abrasive particle and bonding agent, and abrasive particle Size is 23 μm~200 μm.
Specifically, the laser sintered parameter includes：Power 10W~500W of laser is set；Powder layer thickness is set to exist Between 0.02~0.5mm；Linear scanning velocity is set between 100mm/s~7000mm/s；Linear forming speed is set to exist Between 10mm/s~3000mm/s；The oxygen concentration of working cavity is set to be less than 100ppm；Atmosphere is molded under conditions of circularly purifying, Dust removal efficiency is more than 98%.It is passed through protective gas and is kept for a period of time, prevent sintering oxidation, and meets wanting for dust removal efficiency Ask.Thus, by rationally setting the laser sintered parameter, the consolidated metal bonding agent with inner flow passage structure is advantageously ensured that The quality of emery wheel.Metal bonded wheel of the laser sintering process manufacture with inner flow passage shape can realize emery wheel inner flow passage Structure active wound into.
Wherein, ppm is solute concentration unit, and ppm is English parts per million abbreviation, and it is every million to translate meaning A part in point, that is, million/(several), or PPM are represented, if 1ppm is to contain 1 in 1,000,000 kilograms of solution Kilogram solute, for ppm as the content represented by percentage (%), simply its proportional numbers is bigger than percentage, uses solute The concentration that quality accounts for the part per million of complete soln quality to represent, also referred to as ppm.
The metal bonded wheel with inner flow passage structure processed using above-mentioned preparation technology, in grinding process, Good cooling results, workpiece of burning is not easy, grinding force is small, and the workpiece surface form accuracy ground is better than conventional with surface roughness The emery wheel that technique manufactures；Emery wheel quality mitigates, and cost-effective, emery wheel is not susceptible to block, and improves emery wheel durability.This Convenient manufacturing process operates, and is particularly suitable for small lot and customizes production, good with a collection of emery wheel quality conformance.
Other of consolidated metal binding agent sand wheel with inner flow passage structure according to embodiments of the present invention are formed and grasped Work is all for those of ordinary skills known, is not detailed herein.
In the description of this specification, reference term " one embodiment ", " some embodiments ", " example ", " specifically show The description of example " or " some examples " etc. means specific features, structure, material or the feature for combining the embodiment or example description It is contained at least one embodiment or example of the present invention.In this manual, need not to the schematic representation of above-mentioned term Identical embodiment or example must be directed to.Moreover, specific features, structure, material or the feature of description can be any Combined in an appropriate manner in individual or multiple embodiments or example.In addition, in the case of not conflicting, the technology of this area Different embodiments or example and the feature of different embodiments or example described in this specification can be combined by personnel And combination.
Although embodiments of the invention have been shown and described above, it is to be understood that above-described embodiment is example Property, it is impossible to limitation of the present invention is interpreted as, one of ordinary skill in the art within the scope of the invention can be to above-mentioned Embodiment is changed, changed, replacing and modification.

Claims (10)

  1. A kind of 1. consolidated metal binding agent sand wheel with inner flow passage structure, it is characterised in that including：
    Grinding wheel base body；
    Wheel grinding main body, the wheel grinding main body are located at the outside of the grinding wheel base body, and the wheel grinding main body shape Into there is inner flow passage structure.
  2. 2. the consolidated metal binding agent sand wheel according to claim 1 with inner flow passage structure, it is characterised in that in described Flow passage structure is configured to the cylinder of arranged crosswise, and a diameter of 2 millimeters to 4 millimeters of the inner flow passage structure.
  3. 3. the consolidated metal binding agent sand wheel according to claim 1 with inner flow passage structure, it is characterised in that in described Flow passage structure is configured to the polygon of arranged crosswise.
  4. 4. the consolidated metal binding agent sand wheel according to claim 1 with inner flow passage structure, it is characterised in that the sand Take turns and flow passage openings are provided with least one in the end face and outer surface of grinding main body, the flow passage openings and the inner flow passage structure Connection.
  5. A kind of 5. consolidated metal binding agent sand wheel with inner flow passage structure manufactured according to any one of claim 1-4 Device, it is characterised in that described device includes：
    Gas cleaning plant, the gas cleaning plant include gas cleaning plant main body and circulation line；
    Manufacturing equipment main body, the manufacturing equipment main body are connected with the circulation line, and the manufacturing equipment main body includes：
    Working cavity, the working cavity are connected with the circulation line, and powdering scraper plate is provided with the working cavity；
    Laser scanning system, the laser scanning system are connected with the working cavity；
    Control system, the control system scrape partitioned signal transmission to drive the powdering scraper plate to move left and right with the powdering；
    Powder conveying device, the powder conveying device include powder feeding case and drive the powder feeding piston of the powder feeding case；
    Powder recovering device, the powder recovering device include Powder Recovery case；And
    Human-computer interaction interface.
  6. 6. device according to claim 5, it is characterised in that laser sintered platform is provided with the working cavity, it is described Formed with the first notch and the second notch on laser sintered platform, the laser sintered platform be provided with the powder feeding piston and into Type piston, the powder feeding piston are located in first notch and may move up and down, and the shaping piston is located at second groove It is intraoral and removable up and down；
    Wherein, the powder feeding case, the powdering scraper plate are limited between the upper surface of the powder feeding piston and first notch It is located at the upper surface of the laser sintered platform；
    The movable forming is provided with formed substrates beyond the Great Wall, and the consolidated metal binding agent sand wheel is formed on the formed substrates.
  7. 7. device according to claim 6, it is characterised in that the laser scanning system includes：
    Laser, the laser are used to launch LASER Light Source；
    Galvanometer system, one end of the galvanometer system is connected with the laser and the other end is relative with the formed substrates.
  8. A kind of 8. system of consolidated metal binding agent sand wheel with inner flow passage structure according to any one of claim 1-4 Standby technique, it is characterised in that comprise the following steps：
    S1：Abrasive particle, metal dust, filler are mixed to form batch mixing；
    S2：It will design in the importing manufacture device of the consolidated metal binding agent sand wheel parameter with inner flow passage structure completed, to sending The addition batch mixing in powder case, and laser sintering process parameter is set；
    S3：The isolating door of working cavity is closed, opens gas cleaning plant, nitrogen or argon are filled with to working cavity circulation At least one of gas；
    S4：Start the laser；
    S5：Control system control powder feeding piston rises a segment distance, powdering scraper plate by high order end be moved to Powder Recovery case again by Powder Recovery case is moved to high order end, and laser sinters via galvanometer system to current powdering layer-selective, and shaping piston declines one Segment distance, unnecessary powder are sent into powder collection box；
    S6：Repeat step S5, completed until prepared by wheel grinding main body；
    S7：Processing grinding wheel matrix, and assemble wheel grinding main body and the grinding wheel base body；
    S8：Metal bonded wheel finishing is put the first edge on a knife or a pair of scissors.
  9. 9. the preparation technology of the consolidated metal binding agent sand wheel according to claim 8 with inner flow passage structure, its feature It is,
    The batch mixing includes abrasive particle, metal dust, filler；
    The abrasive particle includes at least one of diamond abrasive grain and cubic boron nitride abrasive grain, and wear particle concentration is 10%~200%；
    The metal dust includes at least one of bronze, cobalt, nickel, iron, aluminium；
    The filler is at least one of tungsten carbide, carborundum, graphite.
    Wherein, the abrasive particle is provided with coating, and grit size is 23 μm~200 μm.
  10. 10. the preparation technology of the consolidated metal binding agent sand wheel according to claim 8 with inner flow passage structure, its feature It is, laser sintered parameter includes：
    Power 10W~500W of laser is set；
    Powder layer thickness is set between 0.02~0.5mm；
    Linear scanning velocity is set between 100mm/s~7000mm/s；
    Linear forming speed is set between 10mm/s~3000mm/s；
    The oxygen concentration of working cavity is set to be less than 100ppm；
    Atmosphere is molded under conditions of circularly purifying, dust removal efficiency is more than 98%.
CN201711296743.8A 2017-12-08 2017-12-08 Consolidated metal binding agent sand wheel, device and preparation technology with inner flow passage structure Pending CN107825305A (en)

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN108284400A (en) * 2018-04-04 2018-07-17 陈恩格 A kind of grinding wheel production scraper
US12064850B2 (en) 2021-12-30 2024-08-20 Saint-Gobain Abrasives, Inc. Abrasive articles and methods for forming same

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Publication number Priority date Publication date Assignee Title
DE3515401A1 (en) * 1984-05-21 1985-11-21 VEB Werkzeugmaschinenkombinat "7. Oktober" Berlin, DDR 1120 Berlin Grinding wheel, preferably double-cone grinding wheel
CN201300207Y (en) * 2008-10-30 2009-09-02 华中科技大学 Selective laser melting rapid molding device for metal parts
CN105415216A (en) * 2015-12-01 2016-03-23 湖南大学 Manufacturing method for 3D printing diamond grinding wheel with abrasive particles arranged regularly
CN106041767A (en) * 2016-07-12 2016-10-26 广东工业大学 Resin binder superhard grinding tool with internal cooling microstructure and manufacturing method and application of resin binder superhard grinding tool
CN208132744U (en) * 2017-12-08 2018-11-23 清华大学 Consolidated metal binding agent sand wheel and its manufacturing device with inner flow passage structure

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Publication number Priority date Publication date Assignee Title
DE3515401A1 (en) * 1984-05-21 1985-11-21 VEB Werkzeugmaschinenkombinat "7. Oktober" Berlin, DDR 1120 Berlin Grinding wheel, preferably double-cone grinding wheel
CN201300207Y (en) * 2008-10-30 2009-09-02 华中科技大学 Selective laser melting rapid molding device for metal parts
CN105415216A (en) * 2015-12-01 2016-03-23 湖南大学 Manufacturing method for 3D printing diamond grinding wheel with abrasive particles arranged regularly
CN106041767A (en) * 2016-07-12 2016-10-26 广东工业大学 Resin binder superhard grinding tool with internal cooling microstructure and manufacturing method and application of resin binder superhard grinding tool
CN208132744U (en) * 2017-12-08 2018-11-23 清华大学 Consolidated metal binding agent sand wheel and its manufacturing device with inner flow passage structure

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN108284400A (en) * 2018-04-04 2018-07-17 陈恩格 A kind of grinding wheel production scraper
US12064850B2 (en) 2021-12-30 2024-08-20 Saint-Gobain Abrasives, Inc. Abrasive articles and methods for forming same

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