CN110587260A - Self-adaptive elastic compression ring - Google Patents
Self-adaptive elastic compression ring Download PDFInfo
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- CN110587260A CN110587260A CN201910947096.5A CN201910947096A CN110587260A CN 110587260 A CN110587260 A CN 110587260A CN 201910947096 A CN201910947096 A CN 201910947096A CN 110587260 A CN110587260 A CN 110587260A
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- elastic
- area
- ring
- rigid
- pressure ring
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23P—METAL-WORKING NOT OTHERWISE PROVIDED FOR; COMBINED OPERATIONS; UNIVERSAL MACHINE TOOLS
- B23P19/00—Machines for simply fitting together or separating metal parts or objects, or metal and non-metal parts, whether or not involving some deformation; Tools or devices therefor so far as not provided for in other classes
Abstract
The invention belongs to the technical field of precision assembly, and relates to a self-adaptive elastic pressure ring, which comprises: a connecting region, a rigid region a, an elastic region, a rigid region B, and a contact region. The contact area of this self-adaptation elasticity clamping ring installation positioning in-process elasticity clamping ring can adapt to the working face of being pressed the part, allows the contact surface of being pressed the part and has small angular deviation with the outer anchor ring of elasticity clamping ring contact area, and does not have the too concentrated condition of clamping stress among the installation positioning, the installation and the location of specially adapted precision part. In addition, the elastic pressure ring provided by the invention is simple in structure, convenient to manufacture, strong in adaptability and good in market application prospect and popularization value.
Description
Technical Field
The invention belongs to the technical field of precision assembly, and relates to a self-adaptive elastic compression ring for mounting and positioning precision parts.
Background
The mounting and positioning precision of the part has great influence on the precision machining and the measurement precision of the part. Especially, in the ultra-precision machining process, the installation and positioning errors of the parts account for more than 50% of the total machining or measurement errors of the parts. The precision assembly process of the part is a coupling process of geometric errors of the part and assembly stress. In the practical process, a locking nut is usually matched with a rigid compression ring to realize the installation and the positioning of the part, and the end surface of the positioning locking nut is not parallel to the positioning surface of the part, so that the locking nut is not directly adopted to realize the precise positioning of the part in the precise assembly process; even if the rigid compression ring is added, the abrasion of the positioning surface of the part is reduced, but the problem of unbalanced assembly stress in the positioning process of the part still cannot be solved. The positioning combination mode of the locking nut, the cross washer and the flat washer can improve the positioning unbalance load caused by the unparallel of the end face of the locking nut and the positioning face of the part, but the cross washer and the flat washer are in symmetrical local contact, so that the part still bears larger local stress, and the processing and measuring precision of the part is influenced.
Disclosure of Invention
The invention provides a self-adaptive elastic pressure ring, which aims to solve the problem of concentrated mounting stress in the existing part precision assembly and comprises a connecting region, a rigid region A, an elastic region, a rigid region B and a contact region which are sequentially arranged.
The connecting area, the rigid area A, the elastic area and the rigid area B of the elastic compression ring are of an integral steel or steel alloy structure, the contact area is made of copper or copper alloy materials, and the contact area is fixedly connected with the rigid area B.
The outer ring surface of the contact area of the elastic compression ring is a contact surface for compressing a plane part, the flatness error of the contact area is not more than 1 mu m, and the copper or copper alloy material with softer material is selected as the contact surface for compressing the plane workpiece, so that the surface of the part can be prevented from being crushed, and the protection of the compressed part is facilitated.
The elastic region of the elastic press ring is located between the rigid region a and the rigid region B to prevent elastic deformation of the elastic press ring from affecting the stiffness of the contact region and the connection region.
The connecting area of the elastic pressure ring adopts a flange type connecting area or a threaded connecting area mode; the elastic pressure ring of the flange disc type connecting area is suitable for mounting and positioning parts with the same basic size in the same batch, and for the parts with different basic sizes, parallel gaskets are placed on the ring surface or the contact area of the flange; the size range of the applicable pressed part is wider than that of a flange disc type elastic pressing ring, the pressing force of the pressed part is controlled through the screwed-in position of the threads, and the anti-loosening performance of the threaded elastic pressing ring is improved by selecting the fine threads or increasing the thread locking screws in the radial direction.
The manufacturing process of the elastic region (3) of the elastic pressure ring adopts the equidistant grooves which are directly cut on the rigid circular ring part by the linear cutting process along two mutually vertical directions on the axial section in an alternating and symmetrical mode.
And the contact area of the elastic pressing ring and the rigid area B are fixed by welding, gluing or threaded connection.
The pitch of the equidistant grooves is 0.1 mm-1.5 mm.
The self-adaptive elastic pressure ring controls the elastic coefficient of the elastic pressure ring by controlling the width, the depth or the number of the grooves.
Structural changes made in the elastomeric compression ring attachment area and the elastomeric area are within the scope of the present invention.
The self-adaptive elastic pressure ring has the advantages that the contact area of the elastic pressure ring can adapt to the working surface of a pressed part in the installation and positioning process, the contact surface of the pressed part and the outer ring surface of the contact area of the elastic pressure ring are allowed to have slight angle deviation, the situation that clamping stress is too concentrated does not exist in the installation and positioning process, and the self-adaptive elastic pressure ring is particularly suitable for installation and positioning of precision parts. In addition, the elastic pressure ring provided by the invention is simple in structure, convenient to manufacture, strong in adaptability and good in market application prospect and popularization value.
Drawings
Fig. 1 shows a flange-type elastic pressure ring.
Fig. 2 is a schematic diagram of the elastic press ring structure.
Fig. 3 a threaded resilient collar.
Fig. 4 a regular hexahedral locating block.
Fig. 5 mounting of the photoelectric accelerometer in a regular hexahedral positioning block.
Figure 6 application of an elastic pressure ring in positioning of a photoelectric accelerometer.
In the figure: 1 a joining region; 1-1 flange-disk type joint region; 1-2 threaded joint zones; 2 rigid region a; 3 an elastic zone; 4 rigid region B; 5 a contact zone; 6, a regular hexahedron positioning block; 6-1 photoelectric accelerometer positioning surface; 6-2 photoelectric acceleration connecting threaded holes; 6-3, elastically pressing a ring positioning surface; 6-4, connecting the elastic compression ring with the threaded hole; 7 photoelectric accelerometer.
Detailed Description
The detailed structure and application of the flange type elastic pressure ring are explained by taking the installation of the photoelectric accelerometer 7 in the regular hexahedron positioning block 6 as an example.
The invention relates to a fixed angle division and positioning block (ZL201810668031.2) for a regular N-prism part and an assembly and adjustment method and application (ZL201810670073. X) for the fixed angle division and positioning block for the regular N-prism part, and a regular hexahedron is designed to be used as the positioning block of a photoelectric accelerometer.
The center of mass of the photoelectric accelerometer is required to coincide with the geometric center of a high-precision positioning block, namely a regular hexahedron, in the test. The photoelectric accelerometer is subjected to a high-acceleration centrifugal experiment in the test process, if the photoelectric accelerometer is positioned close to 4M 2 connecting screws, the center of mass of the photoelectric accelerometer deviates from the geometric center of a high-precision positioning block due to the elongation of the screws under the action of centrifugal force, and thus test errors are caused. Therefore, a force needs to be applied to the back surface of the mounting flange plate of the accelerometer so as to reduce the deviation of the photoelectric acceleration centroid caused by the centrifugal force. Because the photoelectric accelerometer belongs to a precision part, the photoelectric accelerometer is easy to damage due to rigid compression; in addition, the thickness of the accelerometers in the same batch has a tolerance of 75 μm, and the back surface of the acceleration flange plate is not necessarily parallel to the locating surface. The self-adaptive elastic pressure ring provided by the invention can be used for well solving the problem.
Firstly, designing the structure of a regular hexahedron positioning block 6 and an elastic pressure ring of a flange type connecting area 1-1 according to a photoelectric accelerometer 7.
The thickness of the parallel surfaces of the regular hexahedron positioning block 6 is 60mm, the thickness difference between the three dimensional parallel surfaces is not more than 1 mu m, and the perpendicularity error of the two adjacent surfaces is not more than 1 mu m; the center of one surface of the regular hexahedron positioning block 6 is provided with a countersunk blind hole, the bottom surface is a photoelectric accelerometer positioning surface 6-1, 4 uniformly distributed M2 photoelectric acceleration connecting threaded holes 6-2 are processed on the photoelectric accelerometer positioning surface, the countersunk ring surface is an elastic pressure ring positioning surface 6-3, and 4 uniformly distributed M4 photoelectric acceleration connecting threaded holes 6-4 are processed on the elastic pressure ring positioning surface.
The diameter of the lead end of the photoelectric accelerometer 7 is 25mm, the maximum radial size of the flange plate is not more than 36mm, the diameter of the countersunk blind hole of the regular hexahedron positioning block 6 is 38mm, and the inner diameter and the outer diameter of the elastic pressure ring are 26mm and 36mm respectively; the flange plate 1-1 of the elastic compression ring is adapted to the countersunk part of the regular hexahedron positioning block 6; a countersunk blind hole is formed in the regular hexahedral locating block 6, the distance from the locating surface 6-1 of the photoelectric accelerometer to the regular hexahedral locating block 6 is strictly controlled according to the centroid position of the photoelectric accelerometer, the distance tolerance is not more than 3 micrometers, the pressing force of the elastic pressure ring during working is about 1500N, the compression amount is designed to be 0.5mm, and the elastic coefficient of the elastic pressure ring is about 3000N/mm according to the calculation; the width of a linear cutting groove of the elastic area 3 is set to be 0.3mm, a plurality of grooves with equal spacing of 1.5mm are cut in two mutually perpendicular directions in an alternating and symmetrical mode, and the elastic coefficient of the elastic compression ring is close to the target elastic coefficient by optimizing the depth and the number of the grooves. The thickness of the rigid region a2 of the sprung collar is approximately 3.5mm and the thickness of the rigid region B4 and contact region 5 is approximately 4 mm.
When the device is installed, the photoelectric accelerometer is firstly connected to a positioning surface 6-1 of the photoelectric accelerometer in a countersunk blind hole of a regular hexahedron positioning block through 4M 2 screws, and then the elastic press ring adopting the flange type connecting area 1-1 with the specification is fixed to the regular hexahedron positioning block 6 through four M4 screws, so that the outer ring surface of the contact area 5 of the elastic press ring is adaptively pressed on the back surface of a flange plate of the photoelectric accelerometer 7, and about 1500N pressing force is generated in the axial direction. If the pressing force needs to be adjusted, the pressing force can be adjusted by adding a gasket with a certain thickness on the elastic contact area 5 or the ring surface of the flange plate of the elastic pressing ring.
Claims (5)
1. A self-adaptive elastic pressure ring is characterized by comprising a connecting area (1), a rigid area A (2), an elastic area (3), a rigid area B (4) and a contact area (5) which are sequentially arranged;
the connecting area (1), the rigid area A (2), the elastic area (3) and the rigid area B (4) of the elastic compression ring are of an integral steel or steel alloy structure, the contact area (5) is made of copper or copper alloy materials, and the contact area is fixedly connected with the rigid area B;
the outer ring surface of the contact area (5) of the elastic compression ring is a contact surface for pressing a plane part, and the flatness error of the contact area is not more than 1 mu m;
the elastic region (3) of the elastic press ring is positioned between the rigid region A (2) and the rigid region B (4) so as to prevent the elastic deformation of the elastic press ring from influencing the rigidity of the contact region and the connection region;
the connecting area of the elastic pressure ring adopts a flange type connecting area (1-1) or a thread type connecting area (1-2) mode; the elastic pressure ring of the flange disc type connecting area (1-1) is suitable for mounting and positioning parts with the same batch and consistent basic sizes, and for the parts with different basic sizes, parallel gaskets are placed on the ring surface or the contact area of the flange; the size range of the applicable pressed part is wider than that of a flange disc type elastic pressing ring of the threaded connection area (1-2), the pressing force of the pressed part is controlled through the screwing-in position of the threads, and the anti-loosening performance of the threaded elastic pressing ring is improved by selecting fine threads or increasing thread locking screws in the radial direction.
2. The adaptive elastic pressure ring according to claim 1, wherein the elastic region (3) of the elastic pressure ring is fabricated by cutting equally spaced grooves in a linear cutting process along two directions perpendicular to each other on the axial cross section of the rigid ring member.
3. The adaptive elastic pressure ring according to claim 1 or 2, wherein the contact area and the rigid area B of the elastic pressure ring are fixed by welding, gluing or screwing.
4. The adaptive elastic pressure ring according to claim 1 or 2, wherein the pitch of the equidistant grooves is 0.1mm to 1.5 mm.
5. The adaptive elastic pressure ring according to claim 1 or 2, wherein the elastic modulus of the elastic pressure ring is controlled by controlling the groove width, the groove depth or the number of grooves.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910947096.5A CN110587260B (en) | 2019-10-08 | 2019-10-08 | Self-adaptive elastic compression ring |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910947096.5A CN110587260B (en) | 2019-10-08 | 2019-10-08 | Self-adaptive elastic compression ring |
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| Publication Number | Publication Date |
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| CN110587260A true CN110587260A (en) | 2019-12-20 |
| CN110587260B CN110587260B (en) | 2020-08-21 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201910947096.5A Active CN110587260B (en) | 2019-10-08 | 2019-10-08 | Self-adaptive elastic compression ring |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111720421A (en) * | 2020-06-24 | 2020-09-29 | 大连理工大学 | Needle roller assembly type cross washer |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20130006276U (en) * | 2012-04-23 | 2013-10-31 | 대우조선해양 주식회사 | Connecting device of fitting and pipe |
| CN205508801U (en) * | 2016-03-30 | 2016-08-24 | 西安立芯光电科技有限公司 | Clamping ring structure |
| CN207215111U (en) * | 2017-08-24 | 2018-04-10 | 蒋海洋 | A kind of laser module fixing arrangement of Laser Line Marker |
| CN108747483A (en) * | 2018-06-22 | 2018-11-06 | 大连理工大学 | It is a kind of to determine angular indexing and positioning fixture for positive N prismatic elements |
| CN108818032A (en) * | 2018-06-22 | 2018-11-16 | 大连理工大学 | A kind of positive N prismatic elements determine Method of Adjustment and the application of angular indexing and positioning fixture |
-
2019
- 2019-10-08 CN CN201910947096.5A patent/CN110587260B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20130006276U (en) * | 2012-04-23 | 2013-10-31 | 대우조선해양 주식회사 | Connecting device of fitting and pipe |
| CN205508801U (en) * | 2016-03-30 | 2016-08-24 | 西安立芯光电科技有限公司 | Clamping ring structure |
| CN207215111U (en) * | 2017-08-24 | 2018-04-10 | 蒋海洋 | A kind of laser module fixing arrangement of Laser Line Marker |
| CN108747483A (en) * | 2018-06-22 | 2018-11-06 | 大连理工大学 | It is a kind of to determine angular indexing and positioning fixture for positive N prismatic elements |
| CN108818032A (en) * | 2018-06-22 | 2018-11-16 | 大连理工大学 | A kind of positive N prismatic elements determine Method of Adjustment and the application of angular indexing and positioning fixture |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111720421A (en) * | 2020-06-24 | 2020-09-29 | 大连理工大学 | Needle roller assembly type cross washer |
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| CN110587260B (en) | 2020-08-21 |
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