Method for collaboratively constructing column envelope profile of two flanks of star wheel tooth
원문보기
IPC분류정보
국가/구분
United States(US) Patent
등록
국제특허분류(IPC7판)
F04C-018/08
F16H-055/08
F04C-018/52
출원번호
US-0783844
(2015-03-11)
등록번호
US-9927016
(2018-03-27)
우선권정보
CN-2014 1 0475844 (2014-09-17)
국제출원번호
PCT/CN2015/074032
(2015-03-11)
국제공개번호
WO2016/041327
(2016-03-24)
발명자
/ 주소
Liu, Feilong
Zhao, Cun
Lian, Kang
Feng, Quanke
출원인 / 주소
XI'AN JIAOTONG UNIVERSITY
인용정보
피인용 횟수 :
0인용 특허 :
6
초록▼
A method for collaboratively constructing a column envelope profile of two flanks of a star wheel tooth includes steps of: determining a tooth width B of a star wheel according to a diameter of the star wheel and a dimension of a root circle; thereafter, geometrically representing positions and shap
A method for collaboratively constructing a column envelope profile of two flanks of a star wheel tooth includes steps of: determining a tooth width B of a star wheel according to a diameter of the star wheel and a dimension of a root circle; thereafter, geometrically representing positions and shapes of the two flanks by two base columns having parallel axes and the same diameter; wherein: the axes of the base columns are parallel with a center line of the star wheel tooth; on a section of a tooth top of the star wheel tooth, a local projection of a first base column close to a front flank is projected on a lowermost part of a projection of the front flank; and a local projection of a second base column close to a back flank is projected on an uppermost part of a projection of the back flank.
대표청구항▼
1. A method for collaboratively constructing a column envelope profile of two flanks (109, 110) of a star wheel tooth, comprising steps of: determining a tooth width B of the star wheel tooth according to a diameter of a star wheel (102) and a dimension of a root circle; and thereafter, geometricall
1. A method for collaboratively constructing a column envelope profile of two flanks (109, 110) of a star wheel tooth, comprising steps of: determining a tooth width B of the star wheel tooth according to a diameter of a star wheel (102) and a dimension of a root circle; and thereafter, geometrically representing positions and shapes of a front flank (109) and a back flank (110) of the star wheel tooth of the star wheel by two base columns having parallel axes and a same diameter; wherein:the diameter of the two base columns is determined according to the diameter of the star wheel, and the base columns are embodied as a cylindrical milling cutter (111);the axes of the two base columns are parallel with a center line of the star wheel tooth;the tooth width B, a center distance L of the two base columns, the diameter d0 of the two base columns and an inclined angle λ of the flanks (109, 110) of the star wheel tooth at a pitch circle of the star wheel have relationships of: B=d0sinλ+Lcosγ;andγ=arcsin(d0Lcosλ),wherein γ is a horizontal inclined angle of the center distance L of the two base columns; andon a section of a tooth top of the star wheel tooth, a local projection of a first base column (O3) which is close to the front flank (109) of the star wheel tooth is on a lowermost part of a projection of the front flank (109) of the star wheel tooth; a local projection of a second base column (O4) which is close to the back flank (110) of the star wheel tooth is on an uppermost part of a projection of the back flank (110) of the star wheel tooth;selecting a screw rotor processing milling machine, and mounting a screw to be processed on a shaft;clamping a chosen cylindrical milling cutter (111), for envelop-processing tooth grooves of the screw, in a cutter cover (112) of the milling machine, wherein: a center of a planar circular oscillation of an axis of the cylindrical milling cutter (111) is a rotary center (O2) of an axis of the star wheel;adjusting the cylindrical milling cutter (111) to a position overlapping with a center of the first base column (O3) of the front flank (109), and finishing milling a surface of a front side of each tooth groove of the screw;adjusting the cylindrical milling cutter (111) to a position overlapping with a center of the second base column (O4) of the back flank (110), and finishing milling a surface of a back side of each tooth groove of the screw;finishing machining of a profile of the front and back sides of the tooth grooves of the screw;selecting a grinding machine for processing the flanks (109, 110) of the star wheel tooth, wherein the grinding machine comprises a grinding wheel which is a disk grinding wheel; the disk grinding wheel is able to rotate around a central axis thereof for cutting; and a disk surface of the disk grinding wheel is able to revolve around an axis X which is parallel with the disk surface;mounting the star wheel on a desk of the grinding machine, and enabling the star wheel to rotate;enabling the center line of the star wheel tooth to be processed to be collinear with the axis X, and then relatively moving the axis X to the center of the first base column (O3) of the front flank (109) of the star wheel tooth;feeding the star wheel relatively radially, meanwhile adjusting an oscillation angle of a disk milling cutter, and processing an envelope surface of the front flank (109) of the star wheel tooth into a portion of an envelope surface of the first base column (O3);feeding the star wheel relatively radially, meanwhile adjusting the oscillation angle of the disk milling cutter, and processing an envelope surface of the back flank (110) of the star wheel tooth into a portion of an envelope surface of the second base column (O4); andfinishing constructing the profile of the front and back flanks (109, 110) of the star wheel tooth. 2. The method for collaboratively constructing the column envelope profile of the two flanks (109,110) of the star wheel tooth, as recited in claim 1, further comprising a step of: providing a front sub-column having the same diameter with the base columns above the first base column which is close to the front flank (109) of the star wheel tooth, so as to further represent a construction feature of the front flank (109) of the star wheel tooth, wherein a local projection of the front sub-column is on an upper part of the projection of the front flank (109) of the star wheel tooth; and a horizontal inclined angle of a first connecting line between axis centers of the front sub-column and the first base column is 42°-47°. 3. The method for collaboratively constructing the column envelope profile of the two flanks (109, 110) of the star wheel tooth, as recited in claim 2, wherein: on a section of a tooth root of the star wheel tooth, the local projection of the front sub-column merely has a first point overlapping with an uppermost end of the projection of the front flank (109) of the star wheel tooth. 4. The method for collaboratively constructing the column envelope profile of the two flanks (109, 110) of the star wheel tooth, as recited in claim 1, further comprising a step of: providing a back sub-column having the same diameter with the base columns below the second base column which is close to the back flank (110) of the star wheel tooth, so as to further represent a construction feature of the back flank (110) of the star wheel tooth, wherein a local projection of the back sub-column is on a lower part of the projection of the back flank (110) of the star wheel tooth; and a horizontal inclined angle of a second connecting line between axis centers of the back sub-column and the second base column is 56°-61°. 5. The method for collaboratively constructing the column envelope profile of the two flanks (109, 110) of the star wheel tooth, as recited in claim 4, wherein: on a section of a tooth root, the local projection of the back sub-column merely has a second point overlapping with a lowermost end of the projection of the back flank (110) of the star wheel tooth.
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이 특허에 인용된 특허 (6)
Doherty, Michael A.; Seymour, Geoffrey F., Applicator, applicator cap and a container having an applicator cap.
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