CN109262384B - Two-stage self-aligning traceless floating supporting mechanism - Google Patents
Two-stage self-aligning traceless floating supporting mechanism Download PDFInfo
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- CN109262384B CN109262384B CN201811379722.7A CN201811379722A CN109262384B CN 109262384 B CN109262384 B CN 109262384B CN 201811379722 A CN201811379722 A CN 201811379722A CN 109262384 B CN109262384 B CN 109262384B
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- block
- floating
- stage
- floating support
- floating supporting
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- 229910003460 diamond Inorganic materials 0.000 claims description 9
- 239000010432 diamond Substances 0.000 claims description 9
- 238000005498 polishing Methods 0.000 claims description 5
- 238000000034 method Methods 0.000 abstract description 3
- 230000009286 beneficial effect Effects 0.000 description 4
- 238000004519 manufacturing process Methods 0.000 description 3
- 239000000463 material Substances 0.000 description 3
- 238000005299 abrasion Methods 0.000 description 2
- 230000003746 surface roughness Effects 0.000 description 2
- 238000009434 installation Methods 0.000 description 1
- 238000003754 machining Methods 0.000 description 1
Classifications
-
- 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
- B24B5/00—Machines or devices designed for grinding surfaces of revolution on work, including those which also grind adjacent plane surfaces; Accessories therefor
- B24B5/18—Machines or devices designed for grinding surfaces of revolution on work, including those which also grind adjacent plane surfaces; Accessories therefor involving centreless means for supporting, guiding, floating or rotating work
- B24B5/307—Means for supporting work
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Grinding Of Cylindrical And Plane Surfaces (AREA)
- Grinding And Polishing Of Tertiary Curved Surfaces And Surfaces With Complex Shapes (AREA)
Abstract
The invention belongs to the technical field of mechanical grinding, and provides a two-stage self-aligning traceless floating supporting mechanism. The proposed two-stage self-aligning traceless floating support mechanism has a one-stage floating support block; the bottom surface of the primary floating support block is a plane, and the top surface of the primary floating support block is a V-shaped top surface; the two ends of the top surface are respectively provided with an inclined plane I which is outwards and downwards inclined; the center of the primary floating supporting block is provided with a hinging through hole used for hinging with a grinding machine; grooves for installing the second-stage floating supporting blocks are respectively formed on two side wall surfaces of the V-shaped top surface of the first-stage floating supporting block; the two second-stage floating supporting blocks are respectively positioned in the corresponding grooves, and the upper end surfaces of the two second-stage floating supporting blocks are lower than the end surfaces of the grooves; the secondary floating supporting block is hinged with the corresponding groove into a whole through a hinge pin, so that a rotatable secondary floating support is formed. The invention can omit the working procedure of grinding the outer diameter commonly existing in the industry, and reduces the processing time and the cost.
Description
Technical Field
The invention belongs to the technical field of mechanical grinding, and particularly relates to a two-stage self-aligning traceless floating supporting mechanism.
Background
When an annular workpiece such as a bearing ring and the like is used for grinding the surface of an inner circle and an outer circle, an electromagnetic coreless clamp is generally used, and the electromagnetic coreless clamp generally needs two supports for supporting the outer circle surface of the workpiece.
After grinding by using an electromagnetic centerless fixture, the positioning surface of the workpiece can leave bearing marks caused by bearing friction, and it is common in the industry to additionally add a grinding outer diameter procedure after machining for eliminating the bearing marks.
The prior art in the industry can not meet the requirements of products with higher appearance or has the problems of shorter bearing life and the like even if the bearing trace can be reduced.
Disclosure of Invention
In order to solve the technical problems, the invention aims to provide a two-stage self-aligning traceless floating supporting mechanism.
The invention adopts the following technical scheme for accomplishing the purposes:
A two-stage self-aligning traceless floating support mechanism has a one-stage floating support block; the bottom surface of the primary floating support block is a plane, and the top surface of the primary floating support block is a V-shaped top surface formed by two inclined planes inclined towards the middle; the two ends of the top surface are respectively provided with an inclined surface I which is outwards and downwards inclined, and the lower end surface of the inclined surface I is higher than the bottom surface of the primary floating supporting block; the inclined plane I and the bottom surface are connected into a whole through an inclined plane II; the center of the primary floating supporting block is provided with a hinge through hole for being hinged with a grinding machine; grooves for installing the second-stage floating supporting blocks are respectively formed on two side wall surfaces of the V-shaped top surface of the first-stage floating supporting block; the two secondary floating support blocks are respectively positioned in the corresponding grooves, and the upper end surfaces of the secondary floating support blocks are lower than the end surfaces of the grooves; the secondary floating supporting block is hinged with the corresponding groove into a whole through a hinge pin to form a rotatable secondary floating support; the axes of the two hinge pins are positioned in the same plane, and the plane is perpendicular to the axis of the hinge through hole; a contact block for polishing a workpiece is arranged on each secondary floating supporting block; the upper end surface and the working surface of the contact block protrude out of the upper end surface of the primary floating support block; the contact block is a structure capable of freely rotating in two directions under the action of the primary floating support block and the secondary floating support block; the working surfaces of the contact blocks are plane, and the working surfaces of the two contact blocks jointly form a line contact surface for polishing a workpiece.
The working surface of the contact block adopts polycrystalline diamond PCD or polycrystalline pure diamond CVD.
The contact block is adhered with the secondary floating support block into a whole.
And a gap which is convenient for relative rotation between the two floating supporting blocks and the bottom surface of the corresponding groove is arranged between the two floating supporting blocks.
The working surfaces of the two contact blocks are n, the distance between the edges of the two working surfaces and the intersection point of the straight lines where the working surfaces are positioned is m, and the working surfaces are V-shaped and have an included angle alpha; let workable work piece excircle locating surface diameter be D, then:。
The invention provides a two-stage self-aligning traceless floating supporting block mechanism, which utilizes a self-aligning structure that a first-stage floating supporting block and a second-stage floating supporting block enable a contact block to depend on two-stage rotating shafts to be mutually vertical, and a diamond contact plane of the contact block has two rotational degrees of freedom, so that the contact position with a workpiece can be adaptively adjusted, manufacturing errors and installation errors are eliminated, and the contact with the excircle positioning surface of the workpiece can be automatically and effectively ensured to be in line contact; under the condition of unchanged supporting force, compared with the error line contact or point contact, the effective line contact has smaller contact pressure, which is more beneficial to eliminating supporting traces;
the working surface of the contact block is made of polycrystalline diamond PCD or polycrystalline pure diamond CVD material, so that the contact block is extremely high in hardness, resistant to abrasion, low in repair and replacement cost and beneficial to reduction of processing time and production cost; the material is easy to obtain better surface roughness and lower friction coefficient, and is beneficial to eliminating supporting traces;
the working surface of the contact block is a plane, unlike the cylinder surface adopted by some enterprises in the industry, the curvature of the two contact surfaces is increased according to the Hertz contact theory, so that the contact pressure can be reduced;
the working surface of the contact block is higher than the first-stage floating supporting block, so that the working surface of the contact block can still be effectively contacted with the outer circle positioning surface of the workpiece after the contact block rotates in a self-aligning manner;
when the outer circle positioning surface of the workpiece is not a cylindrical surface but a conical surface, the height of the working surface of the contact block higher than that of the primary floating support block should be increased so that the support can support the conical surface for processing in a self-aligning manner;
In summary, the invention can be used as an outer circle support of an electromagnetic coreless clamp, and can support the surface of a workpiece comprising a cylinder and a cone; after the workpiece is ground by using the bearing, the bearing surface of the workpiece has no bearing trace, so that the working procedure of grinding the outer diameter commonly existing in the industry can be omitted, and the processing time and the cost are reduced.
Drawings
Fig. 1 is a front view of the structure of the present invention.
Fig. 2 is an isometric view of the invention.
In the figure: 1. a primary floating support block; 1-1, inclined plane I; 1-2, inclined plane II; 2. a secondary floating support block; 3. a contact block; 4, hinging pins; 5. and a hinge through hole.
Detailed Description
The invention will now be described with reference to the accompanying drawings and specific embodiments:
As shown in fig. 1 and 2, a two-stage self-aligning traceless floating supporting mechanism is provided with a one-stage floating supporting block 1; the bottom surface of the primary floating support block 1 is a plane, and the top surface of the primary floating support block is a V-shaped top surface formed by two inclined planes inclined towards the middle; the two ends of the top surface are respectively provided with an inclined surface I1-1 which is outwards and downwards inclined, and the lower end surface of the inclined surface I1-1 is higher than the bottom surface of the primary floating supporting block; the inclined plane I1-1 and the bottom surface are connected into a whole through an inclined plane II 1-2; the center of the primary floating supporting block 1 is provided with a hinging through hole 5 used for hinging with a grinding machine; grooves for installing the second-stage floating supporting block 2 are respectively formed on two side wall surfaces of the V-shaped top surface of the first-stage floating supporting block; the two secondary floating support blocks 2 are respectively positioned in the corresponding grooves, and the upper end surfaces of the secondary floating support blocks 2 are lower than the end surfaces of the grooves; the secondary floating supporting block 2 is hinged with the corresponding groove into a whole through a hinge pin 4 to form a rotatable secondary floating support; the axes of the two hinge pins are positioned in the same plane, and the plane is perpendicular to the axis of the hinge through hole; a contact block 3 for polishing a workpiece is arranged on each secondary floating support block 2; the upper end surface and the working surface of the contact block 3 protrude from the upper end surface of the primary floating support block; the contact block 3 has a structure capable of freely rotating in two directions under the action of the primary floating support block and the secondary floating support block; the working surfaces of the contact blocks are planes, the working surfaces of the two contact blocks jointly form a line contact surface for grinding a workpiece, and according to the Hertz contact theory, the curvature increase of the two contact surfaces can reduce the contact pressure;
The working surface of the contact block 3 adopts polycrystalline diamond PCD or polycrystalline pure diamond CVD, so that the contact block is extremely high in hardness, abrasion resistant, repair and replacement cost-reducing, and processing time and production cost-reducing are facilitated; and the material is easy to obtain better surface roughness and lower friction coefficient, and is beneficial to eliminating the supporting trace.
The contact block 3 is adhered with the secondary floating support block 2 into a whole.
And a gap which is convenient for relative rotation between the two floating supporting blocks and the bottom surface of the groove corresponding to the second floating supporting block 3 is arranged between the two floating supporting blocks.
The working surfaces of the two contact blocks are n, the distance between the edges of the two working surfaces and the intersection point of the straight lines where the working surfaces are positioned is m, and the working surfaces are V-shaped and have an included angle alpha; let workable work piece excircle locating surface diameter be D, then:。
Claims (4)
1. A two-stage self-aligning traceless floating supporting mechanism is characterized in that: the two-stage self-aligning traceless floating supporting mechanism is provided with a one-stage floating supporting block; the bottom surface of the primary floating support block is a plane, and the top surface of the primary floating support block is a V-shaped top surface formed by two inclined planes inclined towards the middle; the two ends of the top surface are respectively provided with an inclined surface I which is outwards and downwards inclined, and the lower end surface of the inclined surface I is higher than the bottom surface of the primary floating supporting block; the inclined plane I and the bottom surface are connected into a whole through an inclined plane II; the center of the primary floating supporting block is provided with a hinge through hole for being hinged with a grinding machine; grooves for installing the second-stage floating supporting blocks are respectively formed on two side wall surfaces of the V-shaped top surface of the first-stage floating supporting block; the two secondary floating support blocks are respectively positioned in the corresponding grooves, and the upper end surfaces of the secondary floating support blocks are lower than the end surfaces of the grooves; the secondary floating supporting block is hinged with the corresponding groove into a whole through a hinge pin to form a rotatable secondary floating support; the axes of the two hinge pins are positioned in the same plane, and the plane is perpendicular to the axis of the hinge through hole; each secondary floating supporting block is provided with a contact block for polishing a workpiece; the upper end surface and the working surface of the contact block protrude out of the upper end surface of the primary floating support block; the contact block is a structure capable of freely rotating in two directions under the action of the primary floating support block and the secondary floating support block; the working surfaces of the contact blocks are plane, and the working surfaces of the two contact blocks jointly form a line contact surface for polishing a workpiece; the working surfaces of the two contact blocks are n, the distance between the edges of the two working surfaces and the intersection point of the straight lines where the working surfaces are positioned is m, and the two working surfaces are V-shaped and have an included angle alpha; let workable work piece excircle locating surface diameter be D, then:。
2. A two-stage self-aligning traceless floating support mechanism as set forth in claim 1, wherein: the working surface of the contact block adopts polycrystalline diamond PCD or polycrystalline pure diamond CVD.
3. A two-stage self-aligning traceless floating support mechanism as set forth in claim 1, wherein: the contact block is adhered with the secondary floating support block into a whole.
4. A two-stage self-aligning traceless floating support mechanism as set forth in claim 1, wherein: and a gap which is convenient for relative rotation between the two floating supporting blocks and the bottom surface of the corresponding groove is arranged between the two floating supporting blocks.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811379722.7A CN109262384B (en) | 2018-11-20 | 2018-11-20 | Two-stage self-aligning traceless floating supporting mechanism |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811379722.7A CN109262384B (en) | 2018-11-20 | 2018-11-20 | Two-stage self-aligning traceless floating supporting mechanism |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN109262384A CN109262384A (en) | 2019-01-25 |
| CN109262384B true CN109262384B (en) | 2024-05-03 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201811379722.7A Active CN109262384B (en) | 2018-11-20 | 2018-11-20 | Two-stage self-aligning traceless floating supporting mechanism |
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| CN (1) | CN109262384B (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110153883A (en) * | 2019-07-04 | 2019-08-23 | 上海特安一凯轴承有限公司 | A kind of relocatable electric magnetic no-core fixture bearing of multiconductor |
| CN111571435A (en) * | 2020-05-25 | 2020-08-25 | 洛阳Lyc轴承有限公司 | double-V-shaped floating self-aligning supporting structure and machining method of middle supporting block of double-V-shaped floating self-aligning supporting structure |
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| CN102172990A (en) * | 2011-01-11 | 2011-09-07 | 哈尔滨工业大学 | Method for predicting surface roughness in single-point diamond turning |
| CN202357036U (en) * | 2011-11-19 | 2012-08-01 | 襄樊一福坦铁路轴承有限公司 | Floating support combined device of electromagnetic centerless fixture of internal grinding machine |
| CN202668268U (en) * | 2012-06-04 | 2013-01-16 | 浙江五洲新春集团有限公司 | Floating support block |
| CN103317440A (en) * | 2013-06-27 | 2013-09-25 | 常州克劳诺斯特种轴承制造有限公司 | Bearing sleeve ring grinding process floating support device |
| CN204248656U (en) * | 2014-11-05 | 2015-04-08 | 云南圆正轴承有限公司 | A kind of bearing ring electric magnetic no-core clamp supporting |
| CN204819154U (en) * | 2015-08-21 | 2015-12-02 | 天信仪表集团有限公司 | Frock clamp of floating gripper |
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| CN2647491Y (en) * | 2003-10-20 | 2004-10-13 | 洛阳轴承集团有限公司 | Wedge hold-down type electromagnetic coreless clamp bearing |
| JP2008229827A (en) * | 2007-03-23 | 2008-10-02 | Toyota Motor Corp | Work supporting block |
| CN201120586Y (en) * | 2007-11-29 | 2008-09-24 | 洛阳Lyc轴承有限公司 | Ultra-accurate working procedure support clamper |
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| CN103317440A (en) * | 2013-06-27 | 2013-09-25 | 常州克劳诺斯特种轴承制造有限公司 | Bearing sleeve ring grinding process floating support device |
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| CN109262384A (en) | 2019-01-25 |
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| CB02 | Change of applicant information |
Country or region after: China Address after: 471039 No. 96, Jianxi, Luoyang District, Henan, Jianshe Road Applicant after: Luoyang Bearing Group Co.,Ltd. Address before: 471039 No. 96, Jianxi, Luoyang District, Henan, Jianshe Road Applicant before: LUOYANG LYC BEARING Co.,Ltd. Country or region before: China |
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