CN110774160A - Superfine superhard abrasive grinding wheel ultra-precision grinding method assisted by abrasive particle jet flow - Google Patents
Superfine superhard abrasive grinding wheel ultra-precision grinding method assisted by abrasive particle jet flow Download PDFInfo
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- CN110774160A CN110774160A CN201911113057.1A CN201911113057A CN110774160A CN 110774160 A CN110774160 A CN 110774160A CN 201911113057 A CN201911113057 A CN 201911113057A CN 110774160 A CN110774160 A CN 110774160A
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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
- B24B31/00—Machines or devices designed for polishing or abrading surfaces on work by means of tumbling apparatus or other apparatus in which the work and/or the abrasive material is loose; Accessories therefor
- B24B31/10—Machines or devices designed for polishing or abrading surfaces on work by means of tumbling apparatus or other apparatus in which the work and/or the abrasive material is loose; Accessories therefor involving other means for tumbling of work
- B24B31/116—Machines or devices designed for polishing or abrading surfaces on work by means of tumbling apparatus or other apparatus in which the work and/or the abrasive material is loose; Accessories therefor involving other means for tumbling of work using plastically deformable grinding compound, moved relatively to the workpiece under the influence of pressure
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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
- B24B41/06—Work supports, e.g. adjustable steadies
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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
- B24B57/00—Devices for feeding, applying, grading or recovering grinding, polishing or lapping agents
- B24B57/02—Devices for feeding, applying, grading or recovering grinding, polishing or lapping agents for feeding of fluid, sprayed, pulverised, or liquefied grinding, polishing or lapping agents
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Abstract
The invention belongs to the technical field of grinding, and discloses an ultra-precise grinding method of a superfine superhard abrasive grinding wheel assisted by abrasive particle jet flow. The invention realizes the sharpening and the equal-height finishing of the grinding edge of the superfine superhard grinding material grinding wheel, effectively solves the technical problems of the online sharpening of the grinding edge of the surface of the superfine grinding material grinding wheel and the equal-height finishing of the grinding micro-edge, and has positive effect on improving the quality of the ground surface. The invention has obvious advancement and obvious academic and practical application values for promoting the development of the grinding processing technology.
Description
Technical Field
The invention belongs to the technical field of grinding, and particularly relates to an ultra-precise grinding method of a superfine superhard abrasive grinding wheel assisted by abrasive particle jet.
Background
Currently, the current state of the art commonly used in the industry is such that:
grinding is a processing method with high processing precision and is always an effective means for precise and ultra-precise processing. With the progress of science and technology, people have higher and higher requirements on the machining precision and the surface quality of parts, and the grinding method is adopted for precise and ultra-precise machining of materials. At present, a development direction is to use a superfine superhard abrasive grinding wheel in superfine grinding, but because a grinding process is complex and has a plurality of influence factors, the precision superfine grinding processing is often influenced and restricted by a plurality of factors, such as grinding wheel blockage, unequal height of grinding edges, grinding force, grinding heat, materials, environment, grinding wheel abrasion and the like, and the core problem is how to form sharp and high-height grinding micro edges on the surface of the superfine superhard abrasive grinding wheel. Therefore, the key to realize the ultra-precision grinding of the superfine superabrasive grinding wheel is to solve the technical problem of how to realize the sharpness and the contour of the superfine grinding edge on the surface of the wheel by the sand. At present, few effective ultra-precision grinding methods are available, the requirements on the realization conditions are strict, and the equipment is complex, so the current situation restricts the development of the precision ultra-precision grinding technology. Therefore, the search for a new, simpler and more effective precise and ultra-precise grinding method is not only of great significance in promoting the development of grinding technology to a higher level, but also is a target constantly pursued in the field of grinding.
In summary, the problems of the prior art are as follows:
one of the main technical cores for realizing precise and ultra-precise grinding is that a grinding wheel must have equal-height grinding micro blades, and the conventional method for realizing ultra-precise grinding mainly comprises ELID (ultra-precise abrasive grain) ultra-precise grinding and ordinary abrasive grinding wheel fine finishing ultra-precise grinding. The ELID superfine superhard abrasive grinding wheel ultra-precision grinding principle is that the superfine abrasive on the surface of the grinding wheel is sharpened by on-line electrolytic sharpening, so that the grinding wheel has sharp grinding edges and high contour, but the grinding condition of the ELID superfine superhard abrasive grinding wheel is high in requirement, and the ELID superfine abrasive grinding wheel is required to be provided with a grinding wheel which is conductive and suitable for electrolysis, a special electrolytic power supply, special electrolytic grinding liquid, a dressing electrode and the like, so that complex process equipment is required for implementation. The common grinding wheel is low in hardness and weak in grinding capacity, so that the application field is greatly limited.
The significance of solving the technical problems is as follows:
the method of the invention utilizes the strength difference among the superhard abrasive, the common abrasive and the binding agent in the grinding process, adopts the auxiliary action of the ultra-fine abrasive liquid jet, can effectively realize the sharpening and the equal-height finishing of the surface grinding edge of the superfine superhard abrasive grinding wheel, does not need the grinding wheel to have conductivity or special binding agent, only needs to add the jet auxiliary device on the prior grinding device, and has the advantages of simple process equipment and convenient application compared with other superfine superhard abrasive ultra-precision grinding methods. Provides a new method for ultra-precise grinding of superfine superhard abrasives, and has obvious innovativeness, good application potential and commercial value.
Disclosure of Invention
Aiming at the problems in the prior art, the invention provides an ultra-precise grinding method of a superfine superhard abrasive grinding wheel assisted by abrasive particle jet flow.
The invention is realized in such a way that an abrasive particle jet flow assisted ultra-precise grinding method for a superfine superhard abrasive grinding wheel comprises the following steps:
the method for ultra-precision grinding of the superfine super-hard abrasive grinding wheel assisted by abrasive particle jet flow utilizes the abrasive particle liquid jet flow with superfine granularity, and in the grinding process of the superfine super-hard abrasive grinding wheel, the grinding wheel rotates at high speed to drive the superfine-granularity abrasive particle liquid jet flow to carry out on-line sharpening and high-performance dressing on a working surface of the superfine abrasive grinding wheel, so that a high-sharpness micro grinding edge is formed on the surface of the superfine super-hard abrasive grinding wheel, and ultra-precision grinding is realized.
The method for ultra-precisely grinding the superfine superhard abrasive grinding wheel assisted by abrasive particle jet flow specifically comprises the following steps:
firstly, clamping and fixing a workpiece to be processed on a grinding machine, grinding the workpiece to be processed by using a superhard abrasive grinding wheel with fine granularity in a reciprocating grinding mode, and simultaneously feeding common free abrasive grain liquid mixed with superfine granularity into a grinding arc area along the rotation direction of the grinding wheel;
secondly, the superfine free abrasive particles in the grinding arc area obtain grinding capacity under the action of high-speed rotation, dragging and extrusion of the grinding wheel;
thirdly, the superfine common free abrasive particles with the grinding capacity continuously act on the bonding agent and the abrasive on the surface of the superfine superhard abrasive grinding wheel, the strength difference among the superhard abrasive, the common abrasive and the bonding agent is utilized to remove the bonding agent to expose the abrasive particles on the surface of the grinding wheel for a certain height, so that the online sharpening of the surface of the grinding wheel is realized, the unequal-height abrasive is removed to realize the contour finishing of a superfine grinding edge, the superfine grinding edge is formed on the surface of the superfine abrasive grinding wheel, and the superfine superhard abrasive grinding wheel utilizes the contour superfine grinding edges to grind the workpiece ultra-precisely;
in the first step, the superabrasive grinding wheel with fine particle size comprises:
the super-hard abrasive grinding wheel is a ceramic or resin or metal bond super-hard abrasive grinding wheel, and the super-hard abrasive particle size range of the superfine super-hard abrasive grinding wheel is w15-w 0.5.
In the first step, the processing workpiece includes, but is not limited to, metal and ceramic materials.
In the first step, the common ultra-fine grain size free abrasive liquid specifically comprises:
common abrasive particles in the free abrasive particle liquid are corundum or silicon carbide abrasive, and the particle size of the common abrasive particles is 1/5-1/3 times of the particle size of the superfine superabrasive grinding wheel;
the component of the superfine free abrasive grain liquid is a solid-liquid mixture of superfine common abrasive with certain concentration added into water-based liquid added with dispersant;
the volume percentage of the concentration of the superfine common abrasive grain component in the solid-liquid mixture of the superfine free abrasive grain liquid is 2-20%.
The invention also aims to provide an abrasive particle jet assisted superfine superhard abrasive grinding wheel ultraprecise grinding device for implementing the abrasive particle jet assisted superfine superhard abrasive grinding wheel ultraprecise grinding method.
In summary, the advantages and positive effects of the invention are:
the invention effectively solves the high-performance dressing problems of on-line sharpening, fine sharpening and the like in the ultra-precision grinding of the superfine superhard abrasive grinding wheel, and has outstanding substantial innovation and remarkable progress compared with the prior art.
The superfine free abrasive liquid jet stream sharpens the superfine grinding wheel on line in the grinding process, effectively realizes sharpening and equal-height finishing of the grinding edge of the superfine superhard grinding material grinding wheel, can effectively solve the technical problems of online sharpening and equal-height finishing of the grinding edge of the surface of the superfine grinding material grinding wheel, and has a positive effect on improving the quality of the ground surface. Compared with the prior superfine superhard abrasive grinding wheel precision grinding method, the method has the advantages of simple grinding equipment and process, low cost and strong grinding capacity. The invention is an ultra-precise grinding method with strong processing capability, high quality and simple equipment process, has obvious advancement and has obvious academic and practical application values for promoting the development of grinding processing technology.
Drawings
Fig. 1 is a flow chart of a method for ultra-precision grinding by an ultra-fine abrasive jet assisted by a fine superabrasive grinding wheel according to an embodiment of the present invention.
Fig. 2 is a schematic diagram of an ultra-precision grinding method of an ultra-fine abrasive jet flow assisted fine superabrasive grinding wheel provided by an embodiment of the invention.
In the figure: 1. a superfine superhard abrasive grinding wheel; 2. a workpiece to be processed; 3. common free abrasive grain fluid with ultra-fine grain size.
Fig. 3 is a schematic diagram of the on-line dressing, contour dressing and grinding processes of the grinding edge of the micro-fine superhard grinding wheel in the grinding process provided by the embodiment of the invention.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is further described in detail with reference to the following embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.
At present, two methods for realizing ultra-precision grinding mainly comprise ELID ultra-hard abrasive particle grinding wheel ultra-precision grinding and common abrasive grinding wheel fine finishing ultra-precision grinding. The ELID superfine superhard abrasive grinding wheel ultra-precision grinding principle is that the superfine abrasive on the surface of the grinding wheel is sharpened through online electrolytic sharpening, has sharp grinding edges and high contour, but has high requirement on grinding conditions, and requires the grinding wheel with conductivity suitable for electrolysis, a special electrolytic power supply, special electrolytic grinding fluid, a dressing electrode and the like; the common grinding wheel is low in hardness and weak in grinding capacity, so that the application field is greatly limited. Therefore, in order to meet the development demand of ultra-precision machining, development of a new ultra-precision grinding method is urgently required.
To solve the above technical problems, the present invention will be described in detail with reference to the accompanying drawings.
The ultra-precise grinding method of the superfine super-hard abrasive grinding wheel assisted by abrasive particle jet flow provided by the embodiment of the invention comprises the following steps:
the abrasive particle jet flow assisted superfine superhard abrasive grinding wheel ultra-precision grinding method utilizes abrasive particle liquid jet flow with superfine particle size to perform online sharpening and high-grade finishing of a superfine grinding edge on the working surface of the superfine superhard abrasive grinding wheel, a superfine grinding edge is formed on the surface of the superfine superhard abrasive grinding wheel, and the superfine superhard abrasive grinding wheel utilizes the high-grade superfine grinding edge to realize ultra-precision grinding of a workpiece.
As shown in fig. 1, the method for ultra-precision grinding by using an abrasive jet assisted microfine superabrasive grinding wheel according to an embodiment of the present invention specifically includes the following steps:
s101, clamping and fixing a workpiece to be processed on a grinding machine, grinding the workpiece to be processed by using a super-hard abrasive grinding wheel with fine granularity in a reciprocating grinding mode, and simultaneously injecting common free abrasive grain liquid mixed with the superfine granularity into a grinding arc area along the rotation direction of the grinding wheel.
And S102, obtaining the grinding capacity of the superfine free abrasive particles in the grinding arc area under the action of high-speed rotation, dragging and extrusion of the grinding wheel.
S103, the superfine common free abrasive particles with the grinding capacity act on a grinding area, the surface binding agent of the grinding wheel is removed in a micro-scale mode, the working surface of the superfine super-hard abrasive grinding wheel is subjected to online sharpening and high-performance trimming of a superfine grinding edge, and the superfine grinding of the workpiece material is achieved under the grinding effect of the high-performance grinding edge of the sharp superfine super-hard abrasive grinding wheel.
In step S101, a superabrasive grinding wheel having a fine particle size provided in an embodiment of the present invention includes:
the super-hard abrasive grinding wheel is a ceramic or resin or metal bond super-hard abrasive grinding wheel, and the super-hard abrasive granularity of the superfine super-hard abrasive grinding wheel is w15-w 0.5.
In step S101, the workpiece to be processed provided by the embodiment of the present invention includes, but is not limited to, metal and ceramic materials.
In step S101, the free abrasive fluid provided in the embodiment of the present invention specifically includes:
the superfine common abrasive particles in the free abrasive particle liquid are corundum or silicon carbide abrasive, and the particle size of the superfine common abrasive particles is 1/5-1/3 times of the particle size of the super-hard abrasive of the superfine super-hard abrasive grinding wheel.
The component of the superfine free abrasive grain liquid is a solid-liquid mixture of superfine common abrasive with certain concentration added into water-based liquid added with dispersant.
The volume percentage of the concentration of the superfine common abrasive grain component in the solid-liquid mixture of the superfine free abrasive grain liquid is 2-20%.
Step S103 specifically includes: the superfine common free abrasive particles with grinding capacity continuously act on a binding agent and abrasive on the surface of the superfine superhard abrasive grinding wheel, the binding agent is removed to expose the abrasive particles for a certain height, so that the surface of the grinding wheel is sharpened on line, the unequal-height abrasive is removed to finish the superfine grinding edge at the same height, the superfine grinding edge is formed on the surface of the superfine abrasive grinding wheel, and the superfine superhard abrasive grinding wheel utilizes the equal-height superfine grinding edge to grind a workpiece in an ultra-precise manner.
The invention is further described with reference to specific examples.
Example (b):
the ultra-precise grinding method and the principle of the ultra-fine abrasive jet flow assisted superfine superhard abrasive grinding wheel are shown in figure 2, the superfine superhard abrasive grinding wheel 1 is a ceramic, resin or metal bond superhard abrasive grinding wheel, is a consolidation type grinding tool made of superfine superhard abrasive and a bonding agent, and has the granularity range of w15-w 0.5. The workpiece 2, i.e. the workpiece to be machined, may be made of metal or ceramic. The superfine common free abrasive grain liquid 3 is water-based grinding cooling liquid containing superfine silicon carbide or corundum abrasive and added with a dispersing agent, the grain size range of the superfine common free abrasive grains is 1/5-1/3 times of the grain size of the super-hard abrasive of the superfine super-hard abrasive grinding wheel, the concentration range of the abrasive grains in the abrasive grain liquid is 2-20% of the volume ratio, and the grinding condition is determined according to the requirement.
Clamping and fixing the workpiece 2 to be processed on a grinding machine, grinding the superfine superhard abrasive particle grinding wheel 1 and the workpiece 2 to be processed in a slight contact mode, wherein the direction of rotation Vs of the superfine superhard abrasive particle grinding wheel 1 is fixed and unchanged, and the workpiece 2 to be processed moves in a feeding mode V
wThe direction is reciprocating motion. Common free abrasive grain liquid 3 containing ultrafine grains is injected into a contact grinding arc area of a superfine superhard abrasive grinding wheel 1 and a workpiece 2 to be processed along the rotation direction of the grinding wheel, the superfine common free abrasive grains in the grinding arc area obtain grinding capacity under the high-speed rotation, dragging and extruding action of the grinding wheel, the superfine common free abrasive grains with the grinding capacity act on a bonding agent and an abrasive material on the surface of the superfine superhard abrasive grinding wheel, online sharpening of the surface of the grinding wheel is realized by removing the redundant bonding agent on the surface of the grinding wheel 1 to expose the abrasive grains on the surface of the grinding wheel at a proper height, unequal high abrasive materials are removed to enable the abrasive material on the surface of the grinding wheel to form an equal-height grinding micro blade, and the superfine abrasive grinding wheel 1 with the equal-height grinding micro blade;
in the embodiment of the invention, the processes of online sharpening, contour dressing and grinding of the grinding edge of the superfine superhard grinding wheel in grinding are shown in fig. 3, and the superfine abrasive jet flow assisted superfine grinding process of the superfine abrasive grinding wheel is divided into four stages.
The first stage is the original superfine super-hard abrasive grinding wheel.
In the second stage, the superfine superhard abrasive grinding wheel is slightly contacted with the workpiece for grinding under the assistance of the superfine common free abrasive particle jet flow.
And in the third stage, the superfine common free abrasive grain liquid fed into the grinding arc region obtains energy under the dragging and extruding action generated by the high-speed rotation of the superfine superhard abrasive grinding wheel. The superfine common free abrasive grains act on the bonding agent on the surface of the superfine super-hard abrasive grinding wheel to trim redundant bonding agent around the abrasive on the surface of the grinding wheel, so that the abrasive is exposed to a certain height, and the superfine super-hard abrasive grinding wheel is sharpened on line. Meanwhile, the superfine grinding materials with different heights, which are individually protruded on the surface of the grinding wheel, are trimmed in a falling mode under the action of the superfine free abrasive flow, so that the grinding edge on the surface of the grinding wheel is trimmed with equal height, and the surface of the grinding wheel has the grinding edge of the superfine grinding materials with equal height. The process is carried out in a circulating manner all the time in the grinding process, the equal height of the online sharpening and the micro grinding edge of the surface of the super-hard grinding material grinding wheel is maintained, and the ultra-precision grinding capacity of the superfine super-hard grinding material grinding wheel is ensured.
In the embodiment of the invention, the superfine abrasive particle jet flow-assisted superfine superhard abrasive grinding wheel ultra-precision grinding method adopts superfine free abrasive particle liquid jet flow to carry out online sharpening and equal-height finishing of grinding micro blades on the surface of the superfine superhard abrasive grinding wheel in grinding, so that the surface appearance of the superfine superhard abrasive grinding wheel forms sharp grinding micro blades with equal height in the grinding process and can be maintained all the time, the superfine superhard abrasive grinding wheel can carry out ultra-precision superfine grinding on materials, and the problems of surface blockage of the grinding wheel and unequal heights of the grinding micro blades in the grinding process of the existing superfine superhard abrasive grinding wheel are effectively solved. Compared with the prior superfine superhard abrasive grinding wheel grinding, the grinding device has the advantages of simple grinding equipment and process, low cost and strong grinding capability. Therefore, the ultra-precise grinding method of the abrasive particle jet flow assisted superfine superhard abrasive grinding wheel is an ultra-precise grinding method with strong processing capability, high quality and simple equipment process, has obvious advancement, and has obvious academic and practical application values for promoting the development of grinding processing technology.
The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the invention, and any modifications, equivalents and improvements made within the spirit and principle of the present invention are intended to be included within the scope of the present invention.
Claims (7)
1. The method for ultra-precisely grinding the superfine super-hard abrasive grinding wheel assisted by abrasive particle jet is characterized by comprising the following steps of:
the method comprises the steps of injecting superfine free abrasive particles into a grinding area by using liquid jet of common abrasive particles with superfine granularity, dragging and extruding a superfine superhard abrasive grinding wheel rotating at high speed, removing redundant bonding agents on the surface of the grinding wheel by using the strength difference among the superhard abrasive, the common abrasive and the bonding agents, carrying out on-line sharpening and high-altitude trimming of a superfine grinding edge on the working surface of the superfine superhard abrasive grinding wheel, and carrying out ultra-precision grinding on a workpiece by using the sharpened high-altitude superfine grinding edge of the superfine superhard abrasive grinding wheel.
2. The method for ultra-precisely grinding the abrasive particle jet assisted superfine superabrasive grinding wheel according to claim 1, wherein the method for ultra-precisely grinding the abrasive particle jet assisted superfine superabrasive grinding wheel specifically comprises the following steps:
firstly, clamping and fixing a workpiece to be processed on a grinding machine, grinding the workpiece to be processed by using a superhard abrasive grinding wheel with fine granularity in a reciprocating grinding mode, and simultaneously injecting common free abrasive grain liquid mixed with superfine granularity into a grinding arc area along the rotation direction of the grinding wheel;
secondly, the superfine free abrasive particles in the grinding arc area obtain grinding capacity under the action of high-speed rotation, dragging and extrusion of the grinding wheel;
and step three, the superfine common free abrasive particles with the grinding capacity continuously act on the bonding agent and the abrasive on the surface of the superfine superhard abrasive grinding wheel, the abrasive on the surface of the grinding wheel is exposed to a certain height by removing the bonding agent by utilizing the strength difference among the superhard abrasive, the common abrasive and the bonding agent, the online sharpening of the surface of the grinding wheel is realized, the abrasive with unequal heights is removed, the contour dressing of a superfine grinding edge is realized, the formation of the superfine grinding edge on the surface of the superfine abrasive grinding wheel is realized, and the superfine superhard abrasive grinding wheel utilizes the contour superfine grinding edge to grind the workpiece ultra-precisely.
3. The method for ultra-precisely grinding the superfine superabrasive grinding wheel assisted by abrasive particle jet flow according to claim 2, wherein in the first step, the superabrasive grinding wheel with the superfine granularity comprises:
the super-hard abrasive grinding wheel is a ceramic or resin or metal bond super-hard abrasive grinding wheel, and the super-hard abrasive particle size range of the superfine super-hard abrasive grinding wheel is w15-w 0.5.
4. The method for ultra-precisely grinding by using the abrasive particle jet assisted superfine super-hard abrasive grinding wheel according to claim 2, wherein in the first step, the processed workpiece comprises metal and ceramic materials.
5. The ultra-precise grinding method of the superfine super-hard abrasive grinding wheel assisted by the abrasive particle jet flow according to claim 2, wherein in the first step, the superfine free abrasive particle liquid specifically comprises:
the common abrasive particles in the free abrasive particle liquid are corundum or silicon carbide abrasive, and the particle size of the common abrasive particles is 1/5-1/3 times of the particle size of the super-hard abrasive of the superfine super-hard abrasive grinding wheel.
6. The method for ultraprecise grinding of the superfine super-hard abrasive grinding wheel assisted by the abrasive particle jet flow according to claim 2, wherein in the first step, the superfine free abrasive particle liquid component is a solid-liquid mixture of superfine common abrasive with a certain concentration added into a water-based liquid added with a dispersing agent;
the volume percentage of the concentration of the superfine common abrasive grain component in the solid-liquid mixture of the superfine free abrasive grain liquid is 2-20%.
7. An abrasive particle jet assisted ultra-precise grinding device for a superfine superabrasive grinding wheel, which implements the abrasive particle jet assisted superfine superabrasive grinding method of any one of claims 1 to 6.
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| CN112792669A (en) * | 2020-12-30 | 2021-05-14 | 浙江工业大学 | Online dressing method for titanium oxide photocatalyst auxiliary metal bond superhard grinding wheel |
| CN112720263A (en) * | 2021-01-04 | 2021-04-30 | 浙江工业大学 | Online dressing method for spraying strong-oxidizing grinding fluid to surface of super-hard abrasive particle metal bond grinding wheel |
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Application publication date: 20200211 |