CN111906688A - Taper grouping mandrel with axial positioning device - Google Patents

Taper grouping mandrel with axial positioning device Download PDF

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Publication number
CN111906688A
CN111906688A CN201911323534.7A CN201911323534A CN111906688A CN 111906688 A CN111906688 A CN 111906688A CN 201911323534 A CN201911323534 A CN 201911323534A CN 111906688 A CN111906688 A CN 111906688A
Authority
CN
China
Prior art keywords
mandrel
workpiece
positioning
cylindrical
taper
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
CN201911323534.7A
Other languages
Chinese (zh)
Inventor
肖飞
邢天羿
孟庆新
孙振贵
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Aecc Changchun Control Technology Co ltd
Original Assignee
Aecc Changchun Control Technology Co ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Aecc Changchun Control Technology Co ltd filed Critical Aecc Changchun Control Technology Co ltd
Priority to CN201911323534.7A priority Critical patent/CN111906688A/en
Publication of CN111906688A publication Critical patent/CN111906688A/en
Pending legal-status Critical Current

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Classifications

    • BPERFORMING OPERATIONS; TRANSPORTING
    • B24GRINDING; POLISHING
    • B24BMACHINES, DEVICES, OR PROCESSES FOR GRINDING OR POLISHING; DRESSING OR CONDITIONING OF ABRADING SURFACES; FEEDING OF GRINDING, POLISHING, OR LAPPING AGENTS
    • B24B41/00Component parts such as frames, beds, carriages, headstocks
    • B24B41/06Work supports, e.g. adjustable steadies
    • B24B41/067Work supports, e.g. adjustable steadies radially supporting workpieces
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B24GRINDING; POLISHING
    • B24BMACHINES, DEVICES, OR PROCESSES FOR GRINDING OR POLISHING; DRESSING OR CONDITIONING OF ABRADING SURFACES; FEEDING OF GRINDING, POLISHING, OR LAPPING AGENTS
    • B24B41/00Component parts such as frames, beds, carriages, headstocks
    • B24B41/06Work supports, e.g. adjustable steadies
    • B24B41/061Work supports, e.g. adjustable steadies axially supporting turning workpieces, e.g. magnetically, pneumatically

Abstract

The invention discloses a taper grouping mandrel with an axial positioning device, which is used for grinding a workpiece on an external circular grinder and comprises: the mandrel body is sleeved with the workpiece to realize radial positioning and clamping of the workpiece; the positioning sleeve is fixedly sleeved on the cylindrical section of the mandrel body so as to realize axial positioning of a workpiece; the cylindrical section includes: the cylindrical section is used for mounting a clamping hoop; the positioning sleeve is fixedly sleeved on the cylindrical section; the diameter of the intersecting surface of the three cylindrical sections and the cone section is the diameter D of the large end of the cone section; the cone sections and the cylinder sections are integrally formed, and the large-end diameters D of the cone sections are divided into groups at intervals of 0.001 mm; the invention has simple structure and convenient manufacture; the positioning sleeve is added, so that the axial positioning of the workpiece on the taper mandrel is realized, and the axial non-positioning of the traditional taper mandrel is broken through; the method is convenient to operate, easy to ensure the precise axial dimension of the workpiece and suitable for batch production.

Description

Taper grouping mandrel with axial positioning device
Technical Field
The invention relates to the technical field of aviation process equipment, in particular to a taper grouping mandrel with an axial positioning device, which is used for realizing the axial and radial grinding processing of precision shaft sleeve parts and ensuring the axial precision position size.
Background
The structure has high requirements on the diameter size precision and also has strict requirements on the width size and the axial position size, and the structure can ensure the size precision and meet the technical conditions only by adopting a taper mandrel for positioning and clamping on a precise cylindrical grinding machine for grinding;
however, in the existing batch production, the sizes of the inner holes of the workpieces are different due to the tolerance value of the positioning holes of the workpieces; when the taper mandrel is used for positioning and clamping, the positions of all workpieces clamped on the mandrel are uncertain, so that trial cutting is carried out on the axial position of each grinding wheel when the side face of the annular groove is ground.
Therefore, the device which has the functions of conventional radial positioning and workpiece clamping and can realize axial positioning of the workpiece is designed by combining the defects of the prior art that the annular groove (or shoulder) structure adopts the taper mandrel for positioning and clamping to carry out grinding processing, so that the problems are solved.
Disclosure of Invention
The invention aims to provide a taper grouping mandrel with an axial positioning device, which not only has the functions of conventional radial positioning and workpiece clamping, but also can realize axial positioning of workpieces so as to grind and machine shaft sleeve type parts with strict axial position requirements in batch on an external circular grinder.
In order to achieve the above purpose, the invention provides the following technical scheme:
the invention relates to a taper grouping mandrel with an axial positioning device, which is used for grinding a workpiece on an external circular grinder, and comprises:
the mandrel body is sleeved with the workpiece to realize radial positioning and clamping of the workpiece;
and the positioning sleeve is fixedly sleeved on the cylindrical section of the mandrel body and is in contact with the workpiece so as to realize axial positioning of the workpiece.
The cylindrical section comprises a first cylindrical section, a second cylindrical section and a third cylindrical section;
the positioning sleeve is fixedly sleeved on the cylindrical section;
the diameter of the intersecting surface of the three cylindrical sections and the cone section is the diameter D of the large end of the cone section;
wherein the large-end diameters D of the taper segments are grouped at 0.001mm intervals.
In the technical scheme, the taper grouping mandrel with the axial positioning device provided by the invention has the following beneficial effects:
1. the taper grouping mandrel is simple in structure and convenient to manufacture;
2. the taper grouping mandrel is additionally provided with the positioning sleeve, so that the axial positioning of a workpiece on the taper mandrel is realized, and the axial non-positioning of the traditional taper mandrel is broken through;
3. the taper grouping mandrel is convenient to operate, easy to ensure the precise axial dimension of a workpiece and suitable for batch production.
Drawings
In order to more clearly illustrate the embodiments of the present application or technical solutions in the prior art, the drawings needed to be used in the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments described in the present invention, and other drawings can be obtained by those skilled in the art according to the drawings.
FIG. 1 is a schematic structural view of a taper grouping mandrel with an axial positioning device according to the present invention;
FIG. 2 is a schematic structural view of a central shaft body of a taper grouping mandrel with an axial positioning device according to the present invention;
FIG. 3 is a schematic structural diagram of a positioning sleeve in a taper grouping mandrel with an axial positioning device according to the present invention;
FIG. 4 is a schematic structural diagram of a workpiece in a taper grouping mandrel with an axial positioning device according to the present invention.
Description of reference numerals:
1. a mandrel body; 2. a positioning sleeve; 3. a workpiece;
11. a cylindrical section; 12. a vertebral body segment;
111. a section of cylinder; 112. a second section of a cylinder; 113. and (4) three sections of cylinders.
Detailed Description
In order to make the technical solutions of the present invention better understood, those skilled in the art will now describe the present invention in further detail with reference to the accompanying drawings.
As shown in fig. 1 to 4;
the invention relates to a taper grouping mandrel with an axial positioning device, which is used for grinding a workpiece 3 on an external circular grinder, and comprises:
the mandrel comprises a mandrel body 1, wherein a workpiece 3 is sleeved on a conical section 12 of the mandrel body 1 to realize radial positioning and clamping of the workpiece 3;
and the positioning sleeve 2 is fixedly sleeved on the cylindrical section 11 of the mandrel body 1 and is in contact with the workpiece 3 so as to realize axial positioning of the workpiece 3.
The cylindrical section 11 includes:
a cylindrical section 111, wherein the cylindrical section 111 is used for installing a clamping hoop;
the positioning sleeve 2 is fixedly sleeved on the cylindrical second section 112;
the diameter of the intersection surface of the three cylindrical sections 113 and the cone section 12 is the diameter D of the large end of the cone section 12;
wherein, the cone section 12 and the cylinder section 11 are integrally formed;
the large-end diameters D of the cone segments 12 are grouped at 0.001mm intervals.
Furthermore, two ends of the cylindrical section 111 and the conical section 12 are provided with central holes;
specifically, the diameter of the side cutting surface of the three cylindrical sections 113 is the diameter D of the large end of the cone section 12, the three cylindrical sections 113 are ground first during machining, and then the cone section 12 is ground, when the positioning sleeve 2 is sleeved on the two cylindrical sections 112, the end surface of one side of the positioning sleeve 2 abuts against the one cylindrical section 111, then the workpiece 3 is sleeved on the cone section 12, and finally the effect that the workpiece 3 abuts against the end surface of the other side of the positioning sleeve 2 and is clamped by the cone section 12 is achieved;
the dimension of the large-end diameter D of the taper section 12 is grouped according to the tolerance of the positioning hole of the workpiece 3, the interval of each group is 0.001mm, the dimension of the first group and the last group needs to increase the interference magnitude required by the workpiece 3, and the interference magnitude is generally 0.002 mm-0.003 mm;
the parallelism of the two end surfaces of the locating sleeve 2 can be set according to the axial dimension precision of the workpiece 3, and is generally 0.002 mm-0.005 mm;
preferably, the positioning sleeve 2 and the cylindrical section 11 are partially provided with chamfers, and the chamfers are arranged to facilitate the insertion and installation of the positioning sleeve 2.
The first embodiment is as follows:
the method comprises the following steps: diameter of inner hole of workpieceBatch grinding processing outer ring grooveRequired width of the grooveAnd the position size of the groove
To ensure the dimensions L1, L2, a tapered sub-mandrel with axial positioning means was designed as follows:
a taper grouping mandrel with an axial positioning device comprises a mandrel body 1 and a positioning sleeve 2. The mandrel body 1 is composed of a cylindrical section 11, a cylindrical section 111, a cylindrical section 112, a cylindrical section 113 and a conical section 12, wherein the two ends of the cylindrical section 111 and the conical section 12 are provided with central holes;
a cylindrical section 111 for mounting a clamp (a general purpose tool for grinders);
the cylindrical section 112 is provided with a positioning sleeve 2;
the cylinder three segments 113 control the large end diameter D of the cone segment 12;
the cone segments 12 are used for clamping and radial positioning of the workpiece 3;
diameter D of the large end of the cone section 12 according to the diameter of the positioning hole of the workpiece 3The tolerance of the central shaft is divided into groups, every 0.001mm group, the interference required by clamping is 0.002mm in the first group and the last group, the dimension D is from 2.402 to 2.414, and 13 central shaft bodies 1 are counted;
the positioning sleeve 2 is used for axially positioning the workpiece 3, and the parallelism of two end faces of the positioning sleeve 2 is required to be 0.003 mm;
because the diameter D of the large end of the cone section 12 is 13 mandrels grouped according to 0.001mm intervals, 1 suitable mandrel can be selected from the mandrels during use, the requirement that the workpiece 3 is close to the end face of the positioning sleeve 2 (namely, axial positioning) can be met, and meanwhile, the inner hole of the workpiece 3 can be ensured to be radially positioned and clamped by the cone section 12.
While certain exemplary embodiments of the present invention have been described above by way of illustration only, it will be apparent to those of ordinary skill in the art that the described embodiments may be modified in various different ways without departing from the spirit and scope of the invention. Accordingly, the drawings and description are illustrative in nature and should not be construed as limiting the scope of the invention.

Claims (2)

1. A taper grouping spindle with an axial positioning device for grinding a workpiece (3) on an external circular grinding machine, comprising:
the mandrel comprises a mandrel body (1), wherein the workpiece (3) is sleeved on a conical section (12) of the mandrel body (1) to realize radial positioning and clamping of the workpiece (3);
the positioning sleeve (2) is fixedly sleeved on the cylindrical section (11) of the mandrel body (1) and is in contact with the workpiece (3) to realize axial positioning of the workpiece (3).
2. The taper grouping mandrel with the axial positioning device according to claim 1, wherein:
the cylindrical section (11) comprises a cylindrical first section (111), a cylindrical second section (112) and a cylindrical third section (113);
the positioning sleeve (2) is fixedly sleeved on the cylindrical two sections (112);
the diameter of the intersecting surface of the three cylindrical sections (113) and the cone section (12) is the diameter D of the large end of the cone section (12);
wherein the large-end diameters D of the cone segments (12) are grouped at 0.001mm intervals.
CN201911323534.7A 2019-12-20 2019-12-20 Taper grouping mandrel with axial positioning device Pending CN111906688A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201911323534.7A CN111906688A (en) 2019-12-20 2019-12-20 Taper grouping mandrel with axial positioning device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201911323534.7A CN111906688A (en) 2019-12-20 2019-12-20 Taper grouping mandrel with axial positioning device

Publications (1)

Publication Number Publication Date
CN111906688A true CN111906688A (en) 2020-11-10

Family

ID=73241840

Family Applications (1)

Application Number Title Priority Date Filing Date
CN201911323534.7A Pending CN111906688A (en) 2019-12-20 2019-12-20 Taper grouping mandrel with axial positioning device

Country Status (1)

Country Link
CN (1) CN111906688A (en)

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2001300804A (en) * 2000-03-13 2001-10-30 Sandvik Tobler Sa Highly accurate extensible mandrel
CN104400629A (en) * 2014-09-30 2015-03-11 江苏太平洋精锻科技股份有限公司 Bevel gear cylindrical grinding clamp
CN204935312U (en) * 2015-07-15 2016-01-06 浙江天马轴承有限公司 The outer expanding collet arrangement for grinding of a kind of bearing ring
CN105563180A (en) * 2016-02-05 2016-05-11 株洲市九洲传动机械设备有限公司 Self-centering clamp used for taper hole product
CN205915199U (en) * 2016-06-16 2017-02-01 宝鸡石油机械有限责任公司 Thin wall spacer grinds uses device
CN209698070U (en) * 2019-03-19 2019-11-29 洛阳福瑞可汽车零部件有限公司 A kind of internal spline part key side positioning spline tensioning device

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2001300804A (en) * 2000-03-13 2001-10-30 Sandvik Tobler Sa Highly accurate extensible mandrel
CN104400629A (en) * 2014-09-30 2015-03-11 江苏太平洋精锻科技股份有限公司 Bevel gear cylindrical grinding clamp
CN204935312U (en) * 2015-07-15 2016-01-06 浙江天马轴承有限公司 The outer expanding collet arrangement for grinding of a kind of bearing ring
CN105563180A (en) * 2016-02-05 2016-05-11 株洲市九洲传动机械设备有限公司 Self-centering clamp used for taper hole product
CN205915199U (en) * 2016-06-16 2017-02-01 宝鸡石油机械有限责任公司 Thin wall spacer grinds uses device
CN209698070U (en) * 2019-03-19 2019-11-29 洛阳福瑞可汽车零部件有限公司 A kind of internal spline part key side positioning spline tensioning device

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