US20200122300A1 - Grinding wheel tool for microgroove processing and fabrication method thereof - Google Patents

Grinding wheel tool for microgroove processing and fabrication method thereof Download PDF

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Publication number
US20200122300A1
US20200122300A1 US16/347,796 US201816347796A US2020122300A1 US 20200122300 A1 US20200122300 A1 US 20200122300A1 US 201816347796 A US201816347796 A US 201816347796A US 2020122300 A1 US2020122300 A1 US 2020122300A1
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United States
Prior art keywords
grinding wheel
sheets
sheet
face
microgroove
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Abandoned
Application number
US16/347,796
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English (en)
Inventor
Xiaoyu Wu
Yanjun LU
Jianguo LEI
Chaolan ZHOU
Wen Wu
Shuangchen Ruan
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Shenzhen University
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Shenzhen University
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Publication date
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Assigned to SHENZHEN UNIVERSITY reassignment SHENZHEN UNIVERSITY ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS). Assignors: LEI, Jianguo, LU, Yanjun, RUAN, Shuangchen, WU, WEN, WU, XIAOYU, ZHOU, Chaolan
Publication of US20200122300A1 publication Critical patent/US20200122300A1/en
Abandoned 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
    • B24D7/18—Wheels of special form
    • 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
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B24—GRINDING; POLISHING
    • B24D—TOOLS FOR GRINDING, BUFFING OR SHARPENING
    • B24D5/00—Bonded abrasive wheels, or wheels with inserted abrasive blocks, designed for acting only by their periphery; Bushings or mountings therefor
    • B24D5/06—Bonded abrasive wheels, or wheels with inserted abrasive blocks, designed for acting only by their periphery; Bushings or mountings therefor with inserted abrasive blocks, e.g. segmental
    • B24D5/066—Bonded abrasive wheels, or wheels with inserted abrasive blocks, designed for acting only by their periphery; Bushings or mountings therefor with inserted abrasive blocks, e.g. segmental with segments mounted axially one against the other

Definitions

  • the present application relates to the technical field of grinding processing tools, and more particularly to a grinding wheel tool for microgroove processing and a fabrication method thereof.
  • micro machining on the surface of the micro-nano structure mainly depends on micro machining techniques such as laser, electron beam, ion beam, chemical etching, and so on.
  • micro machining techniques such as laser, electron beam, ion beam, chemical etching, and so on.
  • these etching machining methods are expensive in production equipment, have a long production cycle, and are accompanied by corrosive liquids which are difficult to be treated and are liable to cause environmental pollution, thereby limiting the development of those methods.
  • Precision micro grinding processing is one of the effective machining methods for preparing surface microgroove structures.
  • the conventional grinding tool for micro grinding is liable to wear, the contour shape of the grinding wheel tool needs high-precision dressing and truing to ensure the form accuracy of the microgroove structure processing. Therefore, the grinding wheel tool needs to be frequently dressed and trued offline or online. It is very difficult to ensure long-term and continuous processing, and the production and processing efficiency is poor.
  • the present application provides a grinding wheel tool capable of always maintaining its outer edge contour shape, with no need to be repeatedly dressed and trued, which always ensures the form accuracy of microgroove grinding, greatly improves the processing efficiency of microstructure, and realizes the environmentally-friendly, efficient and precise micro machining of aluminum alloy, titanium alloy, die steel, tungsten carbide, and other materials.
  • the object of the present application is to provide a grinding wheel tool for microgroove processing and a method for fabricating a microgroove, so as to solve the technical problems existing in the prior art that the grinding wheel tool wears fast, is difficult to ensure long-term and continuous processing, and the processing efficiency is relatively low.
  • a grinding wheel tool for microgroove processing comprises a grinding wheel tool body.
  • the grinding wheel tool body is formed by sequentially stacking a plurality of grinding wheel sheets along a thickness direction of each of the plurality of grinding wheel sheets.
  • Each of the plurality of the grinding wheel sheets comprises an outside end face, and the outside end faces of all the grinding wheel sheets form a processing end face of the grinding wheel tool body.
  • the outside end face of each of the plurality of grinding wheel sheets defines therein notches, the notches on different grinding wheel sheets have different widths, and different grinding wheel sheets have different outer edge circumferences.
  • the number of the notches on each of the plurality of grinding wheel sheets is multiple, and a plurality of the notches on each of the plurality of grinding wheel sheets are evenly arranged along a circumferential direction of the grinding wheel sheet.
  • each notch includes a bottom face and two side faces integrally connected with two opposite side edges of the bottom face, and an angle formed between the two side faces is 0° to 60°.
  • a depth of the notch is 0.5 millimeter (mm) to 10 mm.
  • each of the plurality of grinding wheel sheets comprises a superabrasive and a binder.
  • the superabrasive has a particle size of 0.1 micrometer ( ⁇ m) to 50 ⁇ m.
  • the superabrasive comprises one or more of diamond, cubic boron nitride, and silicon carbide
  • the binder comprises one or more of a metal binder, a resin binder, and a ceramic binder.
  • each grinding wheel sheet is a circular ring
  • an outer diameter of the grinding wheel sheet is 50 mm to 200 mm
  • an inner diameter of the grinding wheel sheet is 15 mm to 45 mm
  • a thickness of the grinding wheel sheet is 10 ⁇ m to 200 ⁇ m.
  • the number of the grinding wheel sheets is at least three, and the width of the notch gradually increases from the grinding wheel sheet located at an intermediate position toward the grinding wheel sheets located at two sides.
  • contour shape of the processing end face is V-shaped, U-shaped, inverted U-shaped, inverted V-shaped, or obliquely shaped.
  • the present application further provides a method for fabricating a microgroove by using the grinding wheel tool for microgroove processing as described above.
  • the method comprises the following steps:
  • step B assembling the grinding wheel sheets obtained in step A in a predetermined stacking order to obtain a grinding wheel tool body
  • step C grinding a workpiece by using the grinding wheel tool body obtained in step B, wherein the notches on different grinding wheel sheets have different widths, different grinding wheel sheets have different outer edge circumferences; the smaller the widths of the notches are, the larger the outer edge circumference of the grinding wheel sheet is, and the more slowly the outside end face of the grinding wheel sheet wears; the larger the widths of the notches are, the smaller the outer edge circumference of the grinding wheel sheet is, and the faster the outside end face of the grinding wheel sheet wears, thereby truing the contour shape of the processing end face of the grinding wheel tool body into the predetermined shape, and processing the workpiece to form a microgroove with a longitudinal cross-sectional shape conforming to the contour shape of the processing end face.
  • the present application provides the grinding wheel tool for microgroove processing and the method for fabricating a microgroove, and the beneficial effects lie in that as compared with the prior art, the grinding wheel tool for microgroove processing and the fabrication method thereof in the present application have the following advantages:
  • the grinding wheel tool for microgroove processing has different wear speeds on different outside end faces due to different widths of the notches on different grinding wheel pieces.
  • a large notch width the outside end face of the grinding wheel piece is small, and the wear is fast.
  • a small notch width the outside end face of the grinding wheel piece is large, and the wear is slow, therefore enabling the contour shape of the processing end face of the grinding wheel tool body to gradually trim into a stable shape, and enabling the contour shape of the processing end face to keep constant, so that the grinding wheel tool has a self-dressing ability, with no need of frequent dressing and truing, thereby effectively improving the grinding efficiency and improving the form accuracy of the microgroove processing.
  • the microgroove processing technology of the grinding wheel tool ensures the form accuracy of the microgroove processing, thereby achieving efficient, environmentally-friendly, and highly-precise micro machining.
  • the grinding wheel tool provided by the present application enables the contour shape of the processing end face of the grinding wheel tool body to be trued into different shapes such as a V-shape, a U-shape, and so on, by changing the width of the notch and the stacking order of the respective grinding wheel sheets, therefore, microgrooves of various shapes can be processed.
  • FIG. 1 is a schematic view showing a structure of an assembled grinding wheel tool for microgroove processing according to an embodiment of the present application
  • FIG. 2 is a side view of FIG. 1 ;
  • FIG. 3 is a schematic view showing a state of a grinding wheel tool for microgroove processing according to an embodiment of the present application, where a contour shape of a processing end face of the grinding wheel tool body is V-shaped;
  • FIG. 4 is a side view of FIG. 3 ;
  • FIG. 5 is a schematic view showing a structure of a workpiece processed by the grinding wheel tool body of FIG. 3 ;
  • FIG. 6 is a front view of one of the grinding wheel sheets of FIG. 3 ;
  • FIG. 7 is a schematic view showing a state of a grinding wheel tool for microgroove processing according to an embodiment of the present application, where a contour shape of a processing end face of the grinding wheel tool body is U-shaped;
  • FIG. 8 is a side view of FIG. 7 ;
  • FIG. 9 is a schematic view showing a structure of a workpiece processed by the grinding wheel tool body of FIG. 7 ;
  • FIG. 10 is a schematic flow chart of a method for fabricating a microgroove according to an embodiment of the present application.
  • orientation or positional relationship indicated by terms “length”, “width”, “upper”, “lower”, “front”, “back”, “left”, “right”, “vertical”, “horizontal”, “top”, bottom”, “inside”, “outside”, or the like is based on the orientation or positional relationship shown in the drawings, and is merely for facilitating and simplifying the description of the present application, and do not indicate or imply that the device or component referred to must have a particular orientation or be constructed and operated in a particular orientation, and thus are not to be construed as limiting the present application.
  • first and second are used for descriptive purposes only and are not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features.
  • features defining “first” and “second” may include one or more of the features either explicitly or implicitly.
  • the meaning of “a plurality” or “multiple” is two or more unless otherwise specifically defined.
  • the grinding wheel tool for microgroove processing includes a grinding wheel tool body 10 , and the grinding wheel tool body 10 is formed by sequentially stacking a plurality of grinding wheel sheets 11 along a thickness direction of each of the plurality of grinding wheel sheets, and the grinding wheel sheets 11 has an outside end face, and the outside end faces of all the grinding wheel sheets form a processing end face 12 of the grinding wheel tool body 10 , and the processing end face 12 is used to process a microgroove 201 .
  • Notches 101 are defined in the outside end faces of each of the plurality of grinding wheel sheets 11 , the notches 101 on different grinding wheel sheets 11 have different widths W, and different grinding wheel sheets 11 have different outer edge circumferences.
  • Each of the plurality of grinding wheel sheets has the same initial diameter.
  • all the outside end faces of all the grinding wheel sheets are flush, i.e., the processing end face 12 of the grinding wheel tool is a plane.
  • the processing end face 12 of the grinding wheel tool is a plane.
  • different grinding wheel sheets 11 have different outer edge circumferences, thereby making the wear speeds of the outside end face of the different grinding wheel sheets different.
  • the contour shape of the processing end face of the grinding wheel tool body is gradually trued into a stable predetermined shape, so as to enable the grinding wheel tool to have the self-truing ability, the contour shape of the processing end face can remain constant at all times, with no need of frequent dressing and truing, thereby effectively improving the grinding efficiency and improving the form accuracy of the microgroove processing, and it has effectively solved the problem that the microgroove processing technology using the existing traditional grinding wheel tool has relatively fast wearing of the grinding wheel tool, difficulties in long-term and continuous processing, and relatively poor processing efficiency.
  • the contour shape of the processing end face 12 of the grinding wheel tool body 10 can be finally trued into different shapes, thereby, microgrooves of various shapes can be processed.
  • the number of notches 101 on each of the plurality of grinding wheel sheets 11 is multiple, and a plurality of notches 101 on each of the plurality of grinding wheel sheets 11 are evenly arranged along the circumferential direction of the grinding wheel sheet, so as to enable the shape of the outside end face of the same grinding wheel sheet to be consistent throughout the processing of the microgrooves.
  • the notch 101 extends from the outside end face of the grinding wheel sheet 11 toward the rotation center of the grinding wheel sheet along the radial direction of the grinding wheel sheet.
  • the notch 101 includes a bottom face 103 and two side faces 104 integrally connected with two opposite side edges of the bottom face 103 , and an extension line of an intersecting line between the two side faces 104 passes through the rotation center of the grinding wheel sheet 11 .
  • an angle ⁇ formed between the two side faces 104 is 0° ⁇ 60°, angle ⁇ can be 0°, 15°, 30°, 45°, 60°, etc., when the angle ⁇ formed between the two notch side faces 104 is 0°, the width of the notch 101 on the grinding wheel sheet 11 is zero, i.e., no notch exists on the grinding wheel sheet 11 .
  • a depth H of the notch 101 is 0.5 mm to 10 mm, and for example, H can be 0.5 mm, 3 mm, 5 mm, 8 mm, 10 mm, or the like.
  • the grinding wheel sheet 11 comprises a superabrasive and a binder, and the grinding wheel sheet comprising the superabrasive and the binder has a high degree of wear resistance.
  • the superabrasive has a particle size of 0.1 ⁇ m to 50 ⁇ m, and it can be, for example, 0.1 ⁇ m, 10 ⁇ m, 20 ⁇ m, 30 ⁇ m, 50 ⁇ m, or the like.
  • the superabrasive includes one or more of diamond, cubic boron nitride, and silicon carbide
  • the binder includes one or more of a metal binder, a resin binder, and a ceramic binder.
  • the shape of the grinding wheel sheet 11 is a circular ring, and the center of the grinding wheel sheet 11 defines a through hole
  • the outer diameter R 1 of the grinding wheel sheet is 50 mm to 200 mm, for example, R 1 can be 50 mm, 100 mm, 150 mm, 200 mm, etc.
  • the inner diameter R 2 of the grinding wheel sheet is 15 mm to 45 mm, for example, R 2 can be 15 mm, 25 mm, 35 mm, 45 mm, etc.
  • the thickness of the grinding wheel sheet 11 is 10 ⁇ m to 200 ⁇ m, for example, the thickness can be 10 ⁇ m, 50 ⁇ m, 100 ⁇ m, 200 ⁇ m, etc.
  • the number of the grinding wheel sheets 11 is at least three.
  • the width W of the notch 101 gradually increases from the grinding wheel sheet located at an intermediate position toward the grinding wheel sheet located at the two sides, so as to enable the degree of wear of the outside end face of the grinding wheel sheet to gradually increase from the middle to the both sides, such that the contour shape of the processing end face finally forms the desired shape.
  • the number of the grinding wheel sheets 11 is seven, and an inner side of a second grinding wheel sheet and an inner side of a third grinding wheel sheet are attached to two sides of a first grinding wheel sheet, an inner side of a four grinding wheel sheet is attached to an outer side of the second grinding wheel sheet, an inner side of a fifth grinding wheel sheet is attached to an outer side of the third grinding wheel sheet, and an inner side of a sixth grinding wheel sheet is attached to an outer side of the fourth grinding wheel sheet, and an inner side of a seventh grinding wheel sheet is attached to an outer side of the fifth grinding wheel sheet.
  • the width of the respective notch on the first grinding wheel sheet is less than the width of the respective notch on the second grinding wheel sheet is less than the width of the respective notch on the fourth grinding wheel sheet is less than the width of the respective notch on the six grinding wheel sheet
  • the width of the respective notch on the third grinding wheel sheet is equal to the width of the respective notch on the second grinding wheel sheet
  • the width of the respective notch on the fifth grinding wheel sheet is equal to the width of the respective notch on the fourth grinding wheel sheet
  • the width of the respective notch on the seventh grinding wheel sheet is equal to the width of the respective notch on the sixth grinding wheel sheet.
  • the contour shape of the processing end face of the grinding wheel tool body can finally be V-shaped or U-shaped.
  • the thickness of them are all 100 ⁇ m
  • the outer diameter R 1 are all 55 mm
  • the inner diameter R 2 are all 40 mm
  • the depth H of the notch 101 on the first grinding wheel sheet, the second grinding wheel sheet, the third grinding wheel sheet, the fourth grinding wheel sheet, the fifth grinding wheel sheet, the sixth grinding wheel sheet, and the seven grinding wheel sheets are all 5 mm.
  • the angle ⁇ formed between the two side faces 104 of the notch 101 on the first grinding wheel sheet is 0°
  • the angles ⁇ formed between the two side faces 104 of the notch 101 on the second grinding wheel sheet and the third grinding wheel sheet are all 5°
  • the angles ⁇ formed between the two side faces 104 of the notch 101 on the fourth grinding wheel sheet and the fifth grinding wheel sheet are all 10°
  • the angles ⁇ formed between the two side faces 104 of the notch 101 on the sixth grinding wheel sheet and the seventh grinding wheel sheet are all 15°.
  • the number of the grinding wheel sheets 11 can also be set according to actual conditions, for example, it can be eight, ten, or the like.
  • the width W of the notch 101 may also gradually reduce from the grinding wheel sheet located at an intermediate position toward the grinding wheel sheet located at the two sides, so as to enable the wear degree of the outside end face of the grinding wheel sheet to reduce from the middle to the both sides.
  • the width W of the notch 101 may gradually reduce or gradually increase from the grinding wheel sheet located at one side toward the grinding wheel sheet at the other side position, so as to enable the wear degree of the outside end face of the grinding wheel to gradually decrease or gradually increase from one side to the other side.
  • two adjacent grinding wheel sheets 11 are connected and fixed by adhering, and an adhesive is applied to adhesive faces of two adjacent grinding wheel sheets 11 so as to connect and fix the two adjacent grinding wheel sheets 11 .
  • the manner of connection and fixation between the two adjacent grinding wheel sheets 11 is not limited thereto and, for example, in other preferred embodiments of the present application, the two adjacent grinding wheel sheets may be connected and fixed by the manner of thread or engagement.
  • the contour shape of the processing end face 12 may be V-shaped, U-shaped, inverted U-shaped, inverted V-shaped, or obliquely shaped.
  • the present application also provides a method for fabricating a microgroove, by using the grinding wheel tool for microgroove processing as described above, including steps S 10 , S 20 , and S 30 .
  • the width and the number of the notch can be set according to actual needs, which is not limited hereto.
  • the outside end faces of all the grinding wheel sheets form the processing end face of the grinding wheel tool body, and the processing end face is used to process the microgroove.
  • “predetermined stacking order” refers to selecting the stacking order between the individual grinding wheel sheets according to actual needs, for example, when it is required to process a V-shaped or U-shaped microgroove, the grinding wheel sheets can be stacked in such a manner that the width of the notch gradually increases from the middle to the both sides, when it is required to process an inverted V-shaped or inverted U-shaped microgroove, the grinding wheel sheets can be stacked in such a manner that the width of the notch is gradually reduced from the middle to the both sides, and when it is required to process an asymmetric microgroove, it is also possible to stack the grinding wheel sheets with different widths in an asymmetric manner.
  • the trued contour shape of the processing end face is related to the width of the notch of the grinding wheel sheet and the arrangement of the grinding wheel sheet.
  • the contour shape of the processing end face can be selected according to the longitudinal cross-sectional shape of the microgroove required for the workpiece, for example, when the longitudinal cross-sectional shape of the microgroove needs to be V-shaped, U-shaped, inverted U-shaped, inverted V-shaped, or obliquely shaped, the contour shape of the processing end face needs to be correspondingly trued into a V-shape, a U-shape, an inverted U-shape, an inverted V-shape, or an obliquely shape.
  • the workpiece can be a hard, brittle material workpiece, such as aluminum alloy, die steel or titanium alloy.
US16/347,796 2018-05-03 2018-05-03 Grinding wheel tool for microgroove processing and fabrication method thereof Abandoned US20200122300A1 (en)

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CN109070315B (zh) * 2018-05-03 2020-11-03 深圳大学 一种微沟槽加工用的砂轮工具及其制造方法
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CN115194572B (zh) * 2022-07-05 2024-01-12 山东理工大学 一种对称磨削曲轴轴颈的方法

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