Annular piece clamp
By using a ring-shaped fixture with a double-layered clamping structure, the problem of deformation caused by uneven clamping force is solved, and high-precision concentricity of the inner and outer circles of small-diameter thin-walled ring workpieces is achieved, meeting the machining accuracy requirements.
Patent Information
- Application Number
- CN202520314692.0
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-02-26
- Publication Date
- 2026-01-13
- Estimated Expiration
- 2035-02-26
AI Technical Summary
Existing fixtures result in uneven clamping force on small-diameter, thin-walled circular workpieces during processing, leading to workpiece deformation and making it difficult to meet the high-precision requirements for concentricity of inner and outer circles.
The system adopts a double-layer jacket structure. The outer wall of the jacket body is provided with first and second expansion joints, which allow elastic deformation in the circumferential direction and ensure uniform distribution of clamping force. Uniform clamping is achieved by the second jacket being sleeved on the jacket body.
It improves the uniformity of force on the workpiece in the circumferential direction, reduces the risk of deformation, and makes the concentricity of the inner and outer circles less than 0.01mm, meeting the requirements of high-precision machining.
Smart Images
Figure CN223789990U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of precision machinery manufacturing technology, and in particular to a ring-shaped clamp. Background Technology
[0002] Small-diameter, thin-walled circular workpieces are widely used in aerospace, automotive, and medical device industries, and require high machining accuracy. For example, the concentricity of the inner and outer circles of the circular workpiece is very important.
[0003] Currently, the processing method for ring-shaped workpieces is as follows: first, the outer circle of the ring-shaped workpiece is machined. After the outer circle is precision ground, the ring-shaped workpiece is clamped using a fixture. Then, the inner circle of the ring-shaped workpiece is machined using machining equipment. For example, for a ring-shaped workpiece with a wall thickness of 1.5mm, the concentricity between the outer and inner circles is required to be 0.01. The fixtures in the existing technology are cylindrical. When it is necessary to clamp the ring-shaped workpiece, the workpiece is inserted into the fixture. The fixture wall has threaded holes that penetrate both the inside and outside. A tightening screw is screwed into the threaded hole. By tightening the tightening screw, the end face of the tightening screw abuts against the outer peripheral wall of the ring-shaped workpiece inside the fixture, thus achieving clamping and fixing of the ring-shaped workpiece.
[0004] However, because the clamping force on the annular workpiece near the tightening screw is greater than that at other locations, the clamping force on the annular workpiece is uneven. In addition, the wall thickness of the annular workpiece is usually small, which makes the annular workpiece more prone to deformation. As a result, the concentricity of the inner and outer circles after machining is large, usually greater than 0.01, and the machining accuracy is low. Utility Model Content
[0005] The purpose of this utility model is to provide a ring-shaped clamp to solve the technical problems of easy product deformation and low processing accuracy in the prior art.
[0006] Based on the above concept, the technical solution adopted by this utility model is as follows:
[0007] Ring-shaped fixture, including:
[0008] A first clamping sleeve includes a clamping sleeve body, the clamping sleeve body having a first clamping space for clamping a ring to be processed, and the outer circumferential wall of the clamping sleeve body is provided with a first expansion joint and a second expansion joint, the first expansion joint and the second expansion joint both penetrating the clamping sleeve body along a first direction, the first expansion joint extending to the inner circumferential wall of the clamping sleeve body and communicating with the first clamping space, and the depth of the second expansion joint being less than the wall thickness of the clamping sleeve body; the first direction is the axial direction of the clamping sleeve body;
[0009] The second clamp is fitted onto the clamp body and is used to clamp the clamp body.
[0010] In one embodiment, the first expansion joint is provided, and the second expansion joint is provided in multiple ways.
[0011] In one embodiment, a first expansion joint and a plurality of second expansion joints are equally spaced along the circumferential direction of the jacket body.
[0012] In one embodiment, the first expansion joint has a circumferential dimension of 0.3mm-0.7mm in the jacket body; and / or, the second expansion joint has a circumferential dimension of 0.3mm-0.7mm in the jacket body.
[0013] In one embodiment, the difference between the depth of the second expansion joint and the wall thickness of the jacket body ranges from 0.8 mm to 2 mm.
[0014] In one embodiment, the first jacket further includes a base, and the jacket body has a protrusion at one end in a first direction, the protrusion being connected to the base.
[0015] In one embodiment, the length of the protrusion in the circumferential direction of the jacket body is a first length, the circumference of the jacket body is a second length, and the ratio of the first length to the second length is in the range of 0.2-0.4.
[0016] And / or,
[0017] The jacket body, the protrusion, and the seat are integrally formed. The inner side of the protrusion is coplanar with the inner circumferential wall of the jacket body, and the outer side of the protrusion is coplanar with the outer circumferential wall of the jacket body.
[0018] In one embodiment, the second clamping sleeve is provided with a clamping opening, and the second clamping sleeve is also connected to a fastener for adjusting the size of the clamping opening.
[0019] In one embodiment, the circumferential outer wall of the second jacket is provided with a third expansion joint, the third expansion joint penetrating the second jacket along the first direction, and the depth of the third expansion joint is less than the wall thickness of the second jacket.
[0020] In one embodiment, the third expansion joint is offset from the first expansion joint and from the second expansion joint in the circumferential direction of the second jacket.
[0021] The beneficial effects of this utility model are:
[0022] The ring clamp provided by this utility model adopts a double-layer clamping structure to clamp the ring to be processed. The second clamping sleeve is sleeved on the clamping body. The first clamping space of the clamping body is used to clamp the ring to be processed. The circumferential outer wall of the clamping body is provided with a first expansion joint and a second expansion joint that run through the clamping body along a first direction. The dimensions of the first expansion joint and the second expansion joint can change in the circumferential direction of the clamping body. When the second clamping sleeve applies clamping force to the clamping body, the presence of the first expansion joint and the second expansion joint allows the clamping body to better contact and fit with the circumferential outer wall of the ring to be processed in all areas in its circumferential direction. This increases the contact area between the clamping body and the ring to be processed. The clamping body transmits the clamping force to the ring to be processed through the larger contact area, making the force on the ring to be processed more uniform in its circumferential direction. This reduces the risk of deformation of the ring to be processed due to uneven clamping force, resulting in a smaller concentricity of the inner and outer circles of the ring to be processed after processing, thus meeting the processing accuracy requirements.
[0023] The ring-shaped fixture provided by this utility model has a relatively simple structure, and the concentricity of the processed products is relatively small. Attached Figure Description
[0024] To more clearly illustrate the technical solutions in the embodiments of this utility model, the drawings used in the description of the embodiments of this utility model will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on the content of the embodiments of this utility model and these drawings without creative effort.
[0025] Figure 1 This is a schematic diagram of the structure of the ring-shaped clamp provided in this embodiment of the utility model;
[0026] Figure 2 This is a schematic diagram of the first structure of the first jacket provided in this embodiment of the utility model;
[0027] Figure 3 This is a schematic diagram of the second structure of the first jacket provided in this embodiment of the utility model;
[0028] Figure 4 This is a front view of the first jacket provided in this embodiment of the utility model;
[0029] Figure 5 This is a utility model Figure 4 The AA section view shown;
[0030] Figure 6 This is a top view of the first jacket provided in this embodiment of the utility model;
[0031] Figure 7This is a schematic diagram of the structure of the second jacket provided in this embodiment of the utility model;
[0032] Figure 8 This is a front view of the second jacket provided in this embodiment of the utility model;
[0033] Figure 9 This is a utility model Figure 8 The BB section view shown;
[0034] Figure 10 This is a schematic diagram of the structure of the ring to be processed provided in an embodiment of this utility model.
[0035] In the picture:
[0036] 100, First clamping sleeve; 110, Clamping sleeve body; 111, First expansion joint; 112, Second expansion joint; 120, Seat body; 121, Through hole; 130, Protrusion; 140, First clamping space; 200, Second clamping sleeve; 210, Clamping opening; 220, Third expansion joint; 230, Second clamping space; 240, Extension; 250, Clearance plane; 300, Fastener; X, First direction; 10, Ring to be processed. Detailed Implementation
[0037] To make the technical problem solved by this utility model, the technical solution adopted, and the technical effects achieved clearer, the technical solution of this utility model will be further described below with reference to the accompanying drawings and specific embodiments. It should be understood that the specific embodiments described herein are merely for explaining this utility model and not for limiting it. Furthermore, it should be noted that, for ease of description, only the parts related to this utility model are shown in the accompanying drawings, not all of them.
[0038] It should be understood that the phrase "one embodiment" or "an embodiment" throughout the specification means that a specific feature, structure, or characteristic related to the embodiment is included in at least one embodiment of the present invention. Therefore, "in one embodiment" or "in an embodiment" appearing throughout the specification do not necessarily refer to the same embodiment. Furthermore, these specific features, structures, or characteristics can be combined in any suitable manner in one or more embodiments.
[0039] It should be noted that similar labels and letters in the following figures indicate similar items. Therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures.
[0040] In the description of this utility model, unless otherwise explicitly specified and limited, the terms "connected," "linked," and "fixed" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.
[0041] In this utility model, unless otherwise explicitly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature includes the first feature directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature. In the description of this embodiment, unless otherwise specified, "multiple" specifically refers to two or more.
[0042] In the description of this embodiment, the terms "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," and "circumferential," etc., are based on the orientation or positional relationships shown in the accompanying drawings and are only for ease of description and simplification of operation. They do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model. Furthermore, the terms "first" and "second" are merely used for distinction in description and have no special meaning.
[0043] It should be noted that when a component is referred to as "fixed to" or "set on" another component, it can be directly on the other component or it can be located in between the component.
[0044] The technical solution of this utility model will be further described below with reference to the accompanying drawings and specific embodiments.
[0045] This embodiment provides a ring clamp for clamping the ring to be processed. The clamping force is more uniform, reducing the risk of deformation of the ring and thus making the concentricity of the inner and outer circles of the ring smaller, meeting the accuracy requirements.
[0046] It should be noted that the concentricity of the inner and outer circles of the ring to be processed is the deviation range between the axes of the two cylinders.
[0047] In this embodiment, the ring to be processed 10 is as follows: Figure 10 As shown, the outer diameter of the ring 10 to be processed is small, and the wall thickness is also small.
[0048] For example, such as Figures 1 to 9 As shown, the ring clamp includes a first clamp 100 and a second clamp 200. The first clamp 100 and the second clamp 200 cooperate with each other to clamp the ring 10 to be processed, so that the clamping force on the ring 10 to be processed can be more uniform.
[0049] like Figures 1 to 3 As shown, the first clamping sleeve 100 includes a clamping sleeve body 110, which is cylindrical and has a first clamping space 140 for accommodating the ring piece 10 to be processed. Figure 2 and Figure 3 As shown, the outer circumferential wall of the jacket body 110 is provided with a first expansion joint 111 and a second expansion joint 112. Both the first expansion joint 111 and the second expansion joint 112 penetrate the jacket body 110 along a first direction X, wherein the first direction X is the axial direction of the jacket body 110. Both the first expansion joint 111 and the second expansion joint 112 extend from one end of the jacket body 110 to the other end of the jacket body 110.
[0050] In one embodiment, such as Figure 4 and Figure 5 As shown, the first expansion joint 111 extends radially along the jacket body 110 and extends to the circumferential inner wall of the jacket body 110, that is, the first expansion joint 111 communicates with the first clamping space 140. The radial direction of the jacket body 110 is perpendicular to the first direction X. Figure 2 or Figure 6 As shown, the depth of the second expansion joint 112 is less than the wall thickness of the jacket body 110. It should be noted that the depth direction of the second expansion joint 112 is radial to the jacket body 110. The fact that the depth of the second expansion joint 112 is less than the wall thickness of the jacket body 110 ensures that the second expansion joint 112 will not penetrate the jacket body 110 radially, thus maintaining the integrity of the jacket body 110.
[0051] like Figure 1 As shown, in this embodiment, the second clamping sleeve 200 is sleeved on the clamping sleeve body 110 and is used to clamp the clamping sleeve body 110. The clamping force is then transmitted to the ring to be processed 10 through the clamping sleeve body 110, resulting in a more uniform force distribution on the ring to be processed 10. It should be noted that the axial direction of the second clamping sleeve 200 is the same as the axial direction of the clamping sleeve body 110.
[0052] For example, the second clip 200 is provided with a second clamping space 230, and the clip body 110 is located in the second clamping space 230 so that it can be clamped by the second clip 200.
[0053] It should be noted that since the first expansion joint 111 and the second expansion joint 112 penetrate the jacket body 110 along the first direction X, and the first expansion joint 111 penetrates the wall thickness of the jacket body 110, the first expansion joint 111 provides space for the jacket body 110 to move in its circumferential direction. This allows the jacket body 110 to undergo elastic deformation in its circumferential direction, thereby allowing the inner diameter of the jacket body 110 to change within a certain range to fit as closely as possible to the ring 10 to be processed. If only the first expansion joint 111 is provided, the jacket body 110 will undergo elastic deformation and become elliptical instead of circular after being clamped by the second jacket 200. In this case, the ring 10 to be processed will deform into an elliptical shape along with the deformation of the jacket body 110. In this embodiment, by setting the second expansion joint 112, the jacket body 110 can undergo more elastic deformation, thereby ensuring that the jacket body 110 remains round after elastic deformation, and there will be no uneven compression of the ring to be processed 10, so that the ring to be processed 10 maintains its original shape.
[0054] The ring clamp provided in this embodiment adopts a double-layer clamping structure to clamp the ring 10 to be processed. The second clamping sleeve 200 is sleeved on the clamping body 110. The first clamping space 140 of the clamping body 110 is used to clamp the ring 10 to be processed. The circumferential outer wall of the clamping body 110 is provided with a first expansion joint 111 and a second expansion joint 112 that both penetrate the clamping body 110 along the first direction X. The dimensions of the first expansion joint 111 and the second expansion joint 112 in the circumferential direction of the clamping body 110 can change, so that when the second clamping sleeve 200 applies a clamping force to the clamping body 110, due to the first The presence of expansion joint 111 and second expansion joint 112 allows the jacket body 110 to better contact and fit with the outer circumferential wall of the ring 10 to be processed in all areas of its circumferential direction. This increases the contact area between the jacket body 110 and the ring 10 to be processed. The jacket body 110 transmits the clamping force to the ring 10 to be processed through the larger contact area, making the force on the ring 10 to be processed more uniform in its circumferential direction. This reduces the risk of deformation of the ring 10 to be processed due to uneven clamping force, resulting in a smaller concentricity between the inner and outer circles of the ring 10 after processing, thus meeting the processing accuracy requirements.
[0055] In some alternative embodiments, such as Figure 2As shown, a first expansion joint 111 is provided to facilitate control of the original shape of the jacket body 110. In this embodiment, multiple second expansion joints 112 are provided to ensure that the jacket body 110 remains circular after elastic deformation, preventing compression of the ring 10 to be processed.
[0056] To further improve the uniformity of the clamping force applied by the jacket body 110 to the ring 10 to be processed, optionally, a first expansion joint 111 and multiple second expansion joints 112 are equally spaced along the circumferential direction of the jacket body 110. In this way, on the one hand, the ring 10 to be processed experiences more uniform force, ensuring the processing accuracy and concentricity of the inner and outer circles of the ring 10; on the other hand, the arrangement of the first expansion joint 111 and the second expansion joints 112 has a relatively small impact on the structural strength of the jacket body 110.
[0057] In one embodiment, two second expansion joints 112 are provided, and the two second expansion joints 112 and one first expansion joint 111 are equally spaced along the circumferential direction of the jacket body 110, so as to further improve the uniformity of the clamping force on the ring 10 to be processed. Specifically, as Figure 6 As shown, the included angle between two adjacent expansion joints in the circumferential direction of the jacket body 110 is the first included angle α, which is 120° in this embodiment. Of course, it is understood that the value of α is not limited to 120°, but can also be 130°, 110°, etc., and this embodiment does not limit it.
[0058] Optionally, the first expansion joint 111 has a circumferential dimension of 0.3mm-0.7mm in the direction of the jacket body 110, that is, the width of the first expansion joint 111 is in the range of 0.3mm-0.7mm. The width of the first expansion joint 111 cannot be too large, otherwise part of the ring 10 to be processed will not be able to contact the jacket body 110, resulting in uneven stress on the ring 10 and deformation, affecting the concentricity of the inner and outer circles of the ring 10. The width of the first expansion joint 111 cannot be too small, otherwise the elastic deformation of the jacket body 110 will be small, resulting in a small contact area between the jacket body 110 and the ring 10 to be processed, which will also affect the uniformity of stress on the ring 10. For example, the width of the first expansion joint 111 can be 0.3mm, 0.4mm, 0.5mm, 0.6mm, 0.7mm, etc., and this embodiment does not limit this.
[0059] Similar to the first expansion joint 111, the second expansion joint 112 has a circumferential dimension of 0.3mm-0.7mm in the jacket body 110, meaning its width ranges from 0.3mm to 0.7mm. The width of the second expansion joint 112 cannot be too large, as this would prevent a portion of the ring 10 to be processed from contacting the jacket body 110, leading to uneven stress and deformation of the jacket body 110, affecting the concentricity of the inner and outer circles of the ring 10, and also impacting the structural strength of the jacket body 110. Conversely, the width of the second expansion joint 112 cannot be too small, as this would result in a smaller elastic deformation of the jacket body 110, leading to a smaller contact area between the jacket body 110 and the ring 10, also affecting the uniformity of stress on the ring 10. For example, the width of the second expansion joint 112 can be 0.3mm, 0.4mm, 0.5mm, 0.6mm, 0.7mm, etc., but this embodiment does not limit this.
[0060] In one embodiment provided in this example, the difference between the depth of the second expansion joint 112 and the wall thickness of the jacket body 110 ranges from 0.8mm to 2mm, that is, the distance from the second expansion joint 112 to the circumferential inner wall of the jacket body 110 ranges from 0.8mm to 2mm. The difference between the depth of the second expansion joint 112 and the wall thickness of the jacket body 110 cannot be too large. If it is too large, the jacket body 110 will not be able to undergo elastic deformation through the second expansion joint 112, thus affecting the elastic deformation amplitude of the jacket body 110 and consequently affecting the uniformity of the clamping force applied by the jacket body 110 to the ring 10 to be processed. The difference between the depth of the second expansion joint 112 and the wall thickness of the jacket body 110 cannot be too small. If it is too small, it will affect the structural strength of the jacket body 110, and may cause the jacket body 110 to break at the second expansion joint 112 when undergoing elastic deformation. For example, the difference between the depth of the second expansion joint 112 and the wall thickness of the jacket body 110 is 0.8mm, 1mm, 1.2mm, 1.4mm, 1.6mm, 1.8mm, 2mm, etc., and this embodiment does not limit this.
[0061] It should be noted that the jacket body 110 in this embodiment has a uniform wall thickness structure so that the clamping force transmitted from the second jacket 200 to the jacket body 110 can be uniformly transmitted to the ring 10 to be processed.
[0062] In one alternative embodiment, such as Figures 2 to 6As shown, the first clamping sleeve 100 also includes a base 120. The clamping sleeve body 110 has a protrusion 130 at one end in the first direction X, and the protrusion 130 is connected to the base 120. The base 120 can be used to fix it to other fixing devices to secure the clamping sleeve body 110, thus preventing it from moving during the machining of the ring part 10. The base 120 is also used for aligning the ring part fixture, facilitating subsequent machining and manufacturing of the ring part 10.
[0063] In this embodiment, by providing the protrusion 130, on the one hand, compared to the fact that one end of the entire jacket body 110 is connected to the base 120, the jacket body 110 is not restricted by the base 120 and can undergo elastic deformation; on the other hand, the jacket body 110 is connected to the base 120 through the protrusion 130, so that there is a gap between one end of the jacket body 110 and the base 120. This gap makes it easy to observe the position of the ring 10 to be processed relative to the jacket body 110, and also makes it easy to adjust the position of the ring 10 to be processed relative to the jacket body 110.
[0064] Optionally, such as Figure 4 As shown, the base 120 can be cylindrical, and the base 120 and the jacket body 110 are coaxially arranged. Alternatively, as... Figure 5 As shown, the base 120 may also be provided with a through hole 121, which is coaxially arranged with the first clamping space 140 of the clamping body 110. The through hole 121 can be used to push the ring 10 out of the clamping body 110 after the ring 10 is processed.
[0065] In one embodiment, the length of the protrusion 130 in the circumferential direction of the jacket body 110 is a first length, and the circumference of the jacket body 110 is a second length. The ratio of the first length to the second length ranges from 0.2 to 0.4. The ratio of the first length to the second length cannot be too large. If it is too large, it means that the length of the protrusion 130 in the circumferential direction of the jacket body 110 is large, which would restrict the elastic deformation of the jacket body 110 even with the first expansion joint 111 and the second expansion joint 112. Consequently, the jacket body 110 cannot evenly transmit the clamping force to the ring 10 to be processed. The ratio of the first length to the second length cannot be too small. If it is too small, it will affect the connection strength between the jacket body 110 and the seat 120, posing a risk of connection failure. For example, the ratio of the first length to the second length can be 0.2, 1 / 3, 0.35, 0.4, etc., but this embodiment does not limit this.
[0066] Optionally, in this embodiment, the jacket body 110, the protrusion 130 and the seat 120 are integrally formed, so that the first jacket 100 has high integrity and strength.
[0067] In some optional embodiments, the inner surface of the protrusion 130 is coplanar with the inner circumferential wall of the jacket body 110, and the outer surface of the protrusion 130 is coplanar with the outer circumferential wall of the jacket body 110. That is, the protrusion 130 is formed by a portion of the jacket body 110 extending outward along the first direction X. This makes the structure of the first jacket 100 more neat and does not affect the insertion of the ring 10 to be processed into the first clamping space 140.
[0068] The second clamp 200 can have various specific structures, as long as it can clamp the clamp body 110. For example, such as Figures 7 to 9 As shown, the second clamping sleeve 200 is provided with a clamping opening 210, and the second clamping sleeve 200 is also connected to a fastener 300. The fastener 300 is used to adjust the size of the clamping opening 210 to adjust the degree to which the second clamping sleeve 200 clamps the clamping sleeve body 110. Specifically, the fastener 300 connects the portions on both sides of the clamping opening 210, thereby adjusting the distance between the portions on both sides of the clamping opening 210. For example, the fastener 300 can be a fastening bolt, which is screwed onto the second clamping sleeve 200.
[0069] In one embodiment, such as Figure 7 As shown, the second clamp 200 has two extensions 240, forming a clamping opening 210 between them. The fastener 300 is connected to the two extensions 240 to adjust the distance between them, thereby adjusting the size of the clamping opening 210. In this embodiment, the two extensions 240 are arranged in parallel and extend radially along the second clamp 200 to facilitate the installation of the fastener 300. The second clamp 200 also has a clearance plane 250, with the two extensions 240 perpendicular to it. The clearance plane 250 is used to avoid the fastener 300 and tools used to install it, facilitating the operation of the fastener 300.
[0070] To improve the uniformity of the clamping force applied by the second jacket 200 to the jacket body 110, for example, such as Figure 9As shown, the circumferential outer wall of the second sleeve 200 is provided with a third expansion joint 220. The third expansion joint 220 penetrates the second sleeve 200 along the first direction X, and its depth is less than the wall thickness of the second sleeve 200. By setting the third expansion joint 220 to penetrate the second sleeve 200 along the first direction X, more space is provided for the elastic deformation of the second sleeve 200 in its circumferential direction. This allows the inner wall of the second sleeve 200 to better contact and fit with the outer wall of the sleeve body 110, thereby enabling the second sleeve 200 to uniformly apply clamping force to the sleeve body 110, reducing the probability of deformation of the sleeve body 110, and thus reducing the probability of deformation of the ring 10 to be processed. Since the second sleeve 200 needs to apply a large clamping force to the sleeve body 110, if the third expansion joint 220 is set to extend to the circumferential inner wall of the second sleeve 200, and the second sleeve 200 itself has a clamping opening 210, the second sleeve 200 will not be able to apply a clamping force to the sleeve body 110. Therefore, the depth of the third expansion joint 220 needs to be less than the wall thickness of the second sleeve 200, that is, the third expansion joint 220 will not penetrate the wall of the second sleeve 200.
[0071] For example, such as Figure 7 As shown, multiple third expansion joints 220 are provided, further improving the uniformity of the clamping of the second jacket 200 onto the jacket body 110. In this embodiment, two third expansion joints 220 are provided, and the two third expansion joints 220 and the clamping opening 210 are equally spaced along the circumferential direction of the second jacket 200, that is, as shown... Figure 9 As shown, the included angle between two adjacent third expansion joints 220 and between the third expansion joint 220 and the clamping opening 210 is the second included angle b, where b = 120°. Of course, it can be understood that the value of b is not limited to 120°, but can also be 130°, 110°, etc., and this embodiment does not limit it.
[0072] To further improve the uniformity of the clamping force applied by the jacket body 110 to the ring 10 to be processed, in one embodiment, such as Figure 1 As shown, in the circumferential direction of the second sleeve 200, the third expansion joint 220 is offset from the first expansion joint 111 and from the second expansion joint 112. Thus, the position of the third expansion joint 220 on the second sleeve 200 corresponds to the position on the sleeve body 110 where the first expansion joint 111 or the second expansion joint 112 is not located. This prevents situations where the expansion joints on the second sleeve 200 and the expansion joints on the sleeve body 110 are collinear, resulting in the corresponding area of the ring 10 to be processed being unable to be clamped or receiving insufficient clamping force. This reduces the probability of deformation of the ring 10 due to uneven force, ensuring the shape of the ring 10 to be processed.
[0073] Optionally, the third expansion joint 220 has a circumferential dimension of 0.3mm-0.7mm in the second sleeve 200, that is, the width of the third expansion joint 220 is in the range of 0.3mm-0.7mm. The width of the third expansion joint 220 cannot be too large, otherwise part of the sleeve body 110 will not be able to contact the second sleeve 200, leading to uneven stress and deformation of the sleeve body 110. The width of the third expansion joint 220 cannot be too small, otherwise the elastic deformation of the second sleeve 200 will be smaller, resulting in a smaller contact area between the second sleeve 200 and the sleeve body 110, which will also affect the uniformity of stress on the sleeve body 110. For example, the width of the third expansion joint 220 can be 0.3mm, 0.4mm, 0.5mm, 0.6mm, 0.7mm, etc., but this embodiment does not limit this.
[0074] In one embodiment provided in this example, the difference between the depth of the third expansion joint 220 and the wall thickness of the second sleeve 200 ranges from 0.8mm to 2mm, that is, the distance from the third expansion joint 220 to the circumferential inner wall of the second sleeve 200 ranges from 0.8mm to 2mm. The difference between the depth of the third expansion joint 220 and the wall thickness of the second sleeve 200 cannot be too large. If it is too large, the second sleeve 200 will not be able to undergo elastic deformation through the third expansion joint 220, thus affecting the elastic deformation amplitude of the second sleeve 200 and consequently affecting the uniformity of the clamping force applied by the second sleeve 200 to the ring 10 to be processed. The difference between the depth of the third expansion joint 220 and the wall thickness of the second sleeve 200 cannot be too small. If it is too small, it will affect the structural strength of the second sleeve 200, and may cause the second sleeve 200 to break at the third expansion joint 220 when undergoing elastic deformation. For example, the difference between the depth of the third expansion joint 220 and the wall thickness of the second jacket 200 is 0.8mm, 1mm, 1.2mm, 1.4mm, 1.6mm, 1.8mm, 2mm, etc., and this embodiment does not limit this.
[0075] Optionally, the axial length of the second jacket 200 is greater than or equal to the axial length of the jacket body 110, so as to ensure that the entire circumferential outer wall of the jacket body 110 can contact the circumferential inner wall of the second jacket 200, thereby ensuring the uniformity of the force on the jacket body 110.
[0076] This embodiment also provides a ring-shaped component processing device, including the aforementioned ring-shaped component fixture. The ring-shaped component processing device provided in this embodiment produces products with high concentricity and high precision.
[0077] It should be noted that when the ring fixture provided in this embodiment is used to clamp the ring to be processed 10, the concentricity of the inner and outer circles of the product obtained after processing the ring to be processed 10 is less than or equal to 0.01, which can meet the accuracy requirements of most equipment.
[0078] When machining the ring 10 using the ring machining equipment provided in this embodiment, approximately 2 micrometers of allowance is reserved on the circumferential inner wall of the clamping body 110 when machining the first clamping sleeve 100 of the ring fixture. Next, the ring fixture is clamped and aligned using a grinding machine chuck, and the second clamping sleeve 200 is pre-tightened. Then, the inner wall of the clamping body 110 is finely ground according to the outer diameter of the ring 10 to be machined, with the gap controlled at approximately 0.003 mm. At this point, the ring 10 to be machined can be inserted into the inner hole of the clamping body 110. Finally, the fasteners 300 on the second clamping sleeve 200 are tightened to finely grind the inner hole of the ring 10 to be machined.
[0079] The ring-shaped fixture provided in this embodiment has a simple structure and is suitable for various batch production processes. Furthermore, it significantly improves the machining accuracy, with the concentricity of the inner and outer circles of the machined product reaching within 0.01mm. The ring-shaped fixture provided in this embodiment can be used to manufacture corresponding ring-shaped fixtures for ring parts 10 of different diameters. It is applicable to machining various raw materials with a certain degree of rigidity, such as ordinary steel or alloys, and has wide applicability.
[0080] Table 1 shows the test data of the ring-shaped fixture provided in this embodiment, which is used to clamp the ring 10 to be processed. The ring 10 to be processed is an alloy ring with a wall thickness of 1.5 mm.
[0081] According to the test data, using the ring-shaped fixture provided in this embodiment, the concentricity of the inner and outer circles of the processed product is within 0.01, and most of them are less than 0.005. It can be seen that the ring-shaped fixture has a good clamping effect on the ring 10 to be processed, the clamping force on the ring 10 to be processed is relatively uniform, no deformation occurs, and the concentricity meets the high precision requirements.
[0082] Table 1
[0083]
[0084] Note that the above description is merely a preferred embodiment of the present invention and the technical principles employed. Those skilled in the art will understand that the present invention is not limited to the specific embodiments described herein, and various obvious changes, readjustments, and substitutions can be made without departing from the scope of protection of the present invention. Therefore, although the present invention has been described in detail through the above embodiments, the present invention is not limited to the above embodiments, and may include many other equivalent embodiments without departing from the concept of the present invention. The scope of the present invention is determined by the scope of the appended claims.
Claims
1. A ring-shaped clamp, characterized in that, include: A first clamping sleeve (100) includes a clamping sleeve body (110), the clamping sleeve body (110) having a first clamping space (140) for clamping a ring (10) to be processed, and the circumferential outer wall of the clamping sleeve body (110) is provided with a first expansion joint (111) and a second expansion joint (112), the first expansion joint (111) and the second expansion joint (112) both penetrate the clamping sleeve body (110) along a first direction (X), the first expansion joint (111) extends to the circumferential inner wall of the clamping sleeve body (110) and communicates with the first clamping space (140), the depth of the second expansion joint (112) is less than the wall thickness of the clamping sleeve body (110); the first direction (X) is the axial direction of the clamping sleeve body (110); The second clip (200) is sleeved on the clip body (110) and used to clamp the clip body (110).
2. The ring-shaped clamp according to claim 1, characterized in that, There is one first expansion joint (111) and multiple second expansion joints (112).
3. The ring-shaped clamp according to claim 2, characterized in that, A first expansion joint (111) and a plurality of second expansion joints (112) are equally spaced along the circumferential direction of the jacket body (110).
4. The ring-shaped clamp according to claim 1, characterized in that, The first expansion joint (111) has a circumferential dimension of 0.3mm-0.7mm in the direction of the jacket body (110); and / or, the second expansion joint (112) has a circumferential dimension of 0.3mm-0.7mm in the direction of the jacket body (110).
5. The ring-shaped clamp according to claim 1, characterized in that, The difference between the depth of the second expansion joint (112) and the wall thickness of the jacket body (110) is in the range of 0.8mm-2mm.
6. The ring-shaped clamp according to any one of claims 1-5, characterized in that, The first jacket (100) also includes a base (120), and the jacket body (110) has a protrusion (130) at one end in the first direction (X), and the protrusion (130) is connected to the base (120).
7. The ring-shaped clamp according to claim 6, characterized in that, The length of the protrusion (130) in the circumferential direction of the jacket body (110) is a first length, and the circumference of the jacket body (110) is a second length. The ratio of the first length to the second length is in the range of 0.2-0.
4. And / or, The jacket body (110), the protrusion (130) and the seat (120) are integrally formed. The inner side of the protrusion (130) is coplanar with the inner circumferential wall of the jacket body (110), and the outer side of the protrusion (130) is coplanar with the outer circumferential wall of the jacket body (110).
8. The ring-shaped clamp according to any one of claims 1-5, characterized in that, The second clamp (200) is provided with a clamping opening (210), and the second clamp (200) is also connected to a fastener (300) for adjusting the size of the clamping opening (210).
9. The ring-shaped clamp according to claim 8, characterized in that, The second jacket (200) has a third expansion joint (220) on its circumferential outer wall. The third expansion joint (220) penetrates the second jacket (200) along the first direction (X), and the depth of the third expansion joint (220) is less than the wall thickness of the second jacket (200).
10. The ring-shaped clamp according to claim 9, characterized in that, In the circumferential direction of the second jacket (200), the third expansion joint (220) is offset from the first expansion joint (111) and from the second expansion joint (112).