A bracing device and general tool for processing thin-walled cylinder

Abstract

The utility model discloses a kind of bracing device and general tool for processing thin-walled cylinder, belong to machining technical field, for solving the problem that thin-walled cylinder cannot be quickly aligned and tight when being machined on lathe.The bracing device and general tool of the utility model, including first positioning member, second positioning member, support disc and locking assembly;The outer surface of first positioning member and second positioning member is equipped with first taper face;Support disc includes second taper face, two second taper faces are located at the two ends of the inner wall of support disc respectively, second taper face has taper matching with first taper face and the end with large diameter is located at end portion;Notch is through along the center line direction of support disc.The bracing device and general tool of the utility model can realize the quick alignment and tight of thin-walled cylinder workpiece, and is not limited by workpiece wall thickness and length, expands its application range, improves the universality of tooling.

Description

Technical Field

[0001] This utility model belongs to the field of machining technology and relates to a support device and general tooling for machining thin-walled cylinders. Background Technology

[0002] With the application of high-strength materials and the improvement of machining technology, the thickness of some key structural components of cylindrical structures is becoming increasingly thinner. Typically, after these cylindrical components are formed using a spinning process, they still require machining processes (face finishing, profile machining, thread machining, etc.) before they can be finally applied to the product.

[0003] However, after thin-walled cylinders are formed by spinning, they are subject to severe deformation, especially for large-diameter cylinders (6mm, 750mm, etc.), where the ellipticity can reach up to 8mm. Therefore, when the thin-walled cylinders formed by spinning are machined on a lathe, it is difficult to achieve alignment and clamping, which often leads to the inability to complete the machining process according to the drawing requirements. Utility Model Content

[0004] Based on the above analysis, this utility model aims to provide a clamping device and general tooling for processing thin-walled cylinders, so as to solve the technical problem that it is impossible to quickly align and clamp the thin-walled cylinders after spinning on a lathe.

[0005] The purpose of this utility model is mainly achieved through the following technical solutions.

[0006] In a first aspect, this utility model provides a clamping device for processing thin-walled cylindrical bodies, comprising a first positioning member, a second positioning member, a support plate, and a locking assembly; the outer surfaces of the first and second positioning members are each provided with a first conical surface; the support plate includes a second conical surface and a notch, the two second conical surfaces being located at opposite ends of the inner wall of the support plate, the second conical surfaces having a taper matching the first conical surface and the larger diameter end being located at the end of the support plate; the notch penetrates the support plate along its centerline; the support plate is sleeved on the outer periphery of the first and second positioning members, and the two second conical surfaces are respectively in contact with the first conical surfaces of the first and second positioning members; the locking assembly can bring the distance between the first and second positioning members closer, thereby causing the support plate to expand outwards under the cooperation of the first and second conical surfaces and clamp onto the inner wall of the thin-walled cylindrical workpiece.

[0007] Furthermore, the support plate also includes grooves, with multiple grooves evenly spaced along the centerline of the support plate on its outer surface.

[0008] Furthermore, the locking assembly includes a locking shaft, with a first positioning member and a second positioning member both sleeved on the locking shaft. The first positioning member is slidably connected to the locking shaft, and the second positioning member is fixed in position on the locking shaft.

[0009] Furthermore, the locking assembly also includes a first nut kit for bringing the distance between the first positioning member and the second positioning member closer together.

[0010] Furthermore, the locking assembly also includes a second nut assembly for locking the position of the second positioning member on the locking shaft.

[0011] In a second aspect, this utility model provides a universal tooling for processing thin-walled cylindrical bodies, including a first positioning unit and a second positioning unit. Both the first positioning unit and the second positioning unit include the tensioning device for processing thin-walled cylindrical bodies as described in any one of the first aspects of this utility model. The first positioning unit and the second positioning unit are respectively used to internally support and clamp the two ends of the thin-walled cylindrical workpiece.

[0012] Furthermore, the position of the first positioning element of the first positioning unit is fixed, and the locking assembly passes through the lathe spindle and can pull the second positioning element closer to the first positioning element, thereby causing the support plate to expand.

[0013] Furthermore, the first positioning unit also includes a positioning plate, and the locking assembly is connected to the lathe spindle via the positioning plate.

[0014] Furthermore, the position of the second positioning element of the second positioning unit is fixed, and the locking assembly can push the first positioning element closer to the second positioning element, thereby causing the support plate to expand.

[0015] Furthermore, one end of the locking assembly of the second positioning unit is fixed to the top of the lathe tailstock.

[0016] Compared with the prior art, the present invention can achieve at least one of the following beneficial effects:

[0017] 1. The clamping device for processing thin-walled cylindrical bodies of this utility model, by setting a support plate with a notch and setting a conical surface mating structure between the support plate and the first positioning member and the second positioning member, can automatically align and expand the support plate through the locking component, thereby correcting the ellipticity of one end of the thin-walled cylindrical workpiece and clamping it on the inner wall of the thin-walled cylindrical workpiece, providing accurate positioning conditions for the subsequent machining of the thin-walled cylindrical workpiece.

[0018] 2. The tensioning device for processing thin-walled cylinders of this utility model ensures that the support plate can expand evenly while maintaining rigidity by setting grooves on the support plate.

[0019] 3. The tensioning device for processing thin-walled cylindrical bodies of this utility model, by setting a locking assembly including a locking shaft, a first nut assembly and a second nut assembly, can conveniently operate the expansion of the support plate to achieve rapid alignment and tensioning of the thin-walled cylindrical workpiece.

[0020] 4. The universal tooling of this utility model for processing thin-walled cylinders, by setting a first positioning unit and a second positioning unit and using them in combination, can realize the rapid alignment and clamping of thin-walled cylinder workpieces, without being limited by wall thickness and length, thus expanding its application range and improving the versatility of the tooling.

[0021] In this invention, the above-described technical solutions can be combined with each other to achieve more preferred combinations. Other features and advantages of this invention will be set forth in the following description, and some advantages may become apparent from the description or be learned by practicing the invention. The objectives and other advantages of this invention can be realized and obtained through the embodiments described and the accompanying drawings, which are particularly pointed out. Attached Figure Description

[0022] Figure 1 This is a schematic diagram of the tensioning device according to Embodiment 1 of this utility model;

[0023] Figure 2 This is a schematic diagram of the structure of the first positioning member in Embodiment 1 of this utility model;

[0024] Figure 3 This is a schematic diagram of the structure of the second positioning member in Embodiment 1 of this utility model;

[0025] Figure 4 This is a schematic diagram of the front and cross-sectional structure of the support plate of Embodiment 1 of this utility model;

[0026] Figure 5 This is a schematic diagram of the overall structure of the general tooling in Embodiment 2 of this utility model.

[0027] Figure label:

[0028] 1-First positioning component; 11-Mounting table; 12-Center hole; 2-Second positioning component; 21-Threaded hole; 100-First conical surface; 3-Support plate; 31-Second conical surface; 32-Notch; 33-Groove; 4-Locking assembly; 41-Locking shaft; 42-First nut assembly; 43-Second nut assembly; 5-Thin-walled cylindrical workpiece; 6-External four-jaw chuck; 7-Lathe spindle; 8-Center;

[0029] 1000 - First positioning unit; 1001 - Positioning disk; 2000 - Second positioning unit. Detailed Implementation

[0030] The preferred embodiments of the present invention will now be described in detail with reference to the accompanying drawings, which constitute a part of the present invention and are used together with the embodiments of the present invention to illustrate the principles of the present invention, but are not intended to limit the scope of the present invention.

[0031] Example 1

[0032] This embodiment provides a clamping device for processing thin-walled cylinders, such as... Figures 1 to 4 As shown, the device includes a first positioning element 1, a second positioning element 2, a support plate 3, and a locking assembly 4. The outer surfaces of both the first positioning element 1 and the second positioning element 2 are provided with a first conical surface 100. The support plate 3 includes a second conical surface 31 and a notch 32. The two second conical surfaces 31 are located at opposite ends of the inner wall of the support plate 3. The second conical surface 31 has a taper that matches the first conical surface 100, and the end with the larger diameter is located at the end of the support plate 3. The notch 32 penetrates the support plate 3 along its centerline. The support plate 3 is fitted around the outer periphery of the first positioning element 1 and the second positioning element 2, and the two second conical surfaces 31 are respectively in contact with the first conical surfaces 100 of the first positioning element 1 and the second positioning element 2. The locking assembly 4 can bring the distance between the first positioning element 1 and the second positioning element 2 closer, thereby causing the support plate 3 to expand outwards under the cooperation of the first conical surface 100 and the second conical surface 31 and to be tightened on the inner wall of the thin-walled cylindrical workpiece 5.

[0033] When the tensioning device of this embodiment is used to tension the thin-walled cylindrical workpiece, the tensioning device is placed coaxially inside the cylinder of the thin-walled cylindrical workpiece. Since the second conical surfaces 31 at both ends of the support plate 3 are fitted together with the first conical surfaces 100 of the first positioning member 1 and the second positioning member 2 respectively, when the locking assembly 4 pulls the first positioning member 1 and the second positioning member 2 closer to each other, the support plate 3 with the notch 32 expands outward under the action of the conical surface fit until the support plate 3 is tensioned on the inner wall of the thin-walled cylindrical workpiece 5.

[0034] The clamping device for processing thin-walled cylinders in this embodiment, by setting a support plate 3 with a notch 32 and setting a conical mating structure between the support plate 3 and the first positioning member and the second positioning member, can automatically align and expand the support plate through the locking component 4, thereby correcting the ellipticity of one end of the thin-walled cylinder workpiece 5 and clamping it on the inner wall of the thin-walled cylinder workpiece 5, providing accurate positioning conditions for the subsequent machining of the thin-walled cylinder workpiece 5.

[0035] In order to ensure that the support plate 3 expands evenly, such as Figure 4 As shown, the support plate 3 also includes grooves 33, with multiple grooves 33 evenly spaced along the centerline of the support plate 3 on its outer surface. For example, the grooves 33 penetrate along the centerline of the support plate 3, and the multiple grooves 33 create multiple weak areas evenly on the support plate 3, thereby ensuring that the support plate 3 can expand uniformly while maintaining rigidity. Preferably, the support plate 3 is made of an elastic alloy, and the notch 32 has the same curvature as the grooves 33. For example, the support plate 3 has seven grooves 33 with curvatures of 10°-13°.

[0036] like Figure 1 As shown, the locking assembly 4 in this embodiment includes a locking shaft 41, a first nut assembly 42, and a second nut assembly 43. A first positioning member 1 and a second positioning member 2 are both sleeved on the locking shaft 41. The first positioning member 1 is slidably connected to the locking shaft 41, and the second positioning member 2 is fixed in position on the locking shaft 41. The first nut assembly 42 is used to bring the distance between the first positioning member 1 and the second positioning member 2 closer, and the second nut assembly 43 is used to lock the position of the second positioning member 2 on the locking shaft 41.

[0037] For example, such as Figure 1 As shown, the first nut assembly 42 and the second nut assembly 43 are located at both ends of the locking shaft 41, respectively. Both the first nut assembly 42 and the second nut assembly 43 include a flat washer, a spring washer, and a nut. The second positioning member 2 is fastened to the end of the locking shaft 41 with a shoulder through a central threaded hole. After installing the second nut assembly 43, tightening the nut stops the second positioning member 2.

[0038] Optionally, the positions of the first positioning member 1 and the first nut assembly 42 are fixed. Tightening the nut of the first nut assembly 42 causes the locking shaft 41 to move axially, thereby driving the second positioning member 2 to move closer to the first positioning member 1 and expanding the support plate 3.

[0039] Optionally, the position of the locking shaft 41 can be fixed, and the nut of the first nut kit 42 can be tightened to bring the first positioning member 1 closer to the second positioning member 2, thereby expanding the support plate 3.

[0040] The support device for processing thin-walled cylinders in this embodiment, by setting a locking assembly 4 including a locking shaft 41, a first nut kit 42, and a second nut kit 43, can easily operate the expansion of the support plate 3 to achieve rapid alignment and support of the thin-walled cylinder workpiece.

[0041] Example 2

[0042] This embodiment provides a universal tooling for machining thin-walled cylinders, such as... Figure 5 As shown, it includes a first positioning unit 1000 and a second positioning unit 2000. Both the first positioning unit 1000 and the second positioning unit 2000 include the internal support assembly for processing thin-walled cylinders as described in Embodiment 1. The first positioning unit 1000 and the second positioning unit 2000 are respectively used to internally support and clamp the two ends of the thin-walled cylinder workpiece 5.

[0043] The universal tooling for processing thin-walled cylinders in this embodiment, by setting a first positioning unit 1000 and a second positioning unit 2000, can implement internal support and clamping at both ends of the thin-walled cylinder, without being limited by wall thickness and length, which greatly expands its application range and improves the versatility of the tooling.

[0044] Specifically, such as Figure 5 As shown, the position of the first positioning member 1 of the first positioning unit 1000 is fixed, and the locking assembly 4 passes through the lathe spindle and can pull the second positioning member 2 closer to the first positioning member 1, thereby causing the support plate 3 to expand. The first positioning unit 1000 also includes a positioning plate 1001, and the locking assembly 4 is connected to the lathe spindle through the positioning plate 1001.

[0045] When using the first positioning unit 1000 to tighten one end of the thin-walled cylindrical workpiece 5, firstly, the outer four-jaw 6 is placed on the mounting table 11 of the first positioning component 1, and alignment is achieved by adjusting each jaw of the outer four-jaw 6; then, the second positioning component 2 is screwed onto the end of the locking shaft 41 with a shoulder through the central threaded hole 21, and the second positioning component 2 is locked and stopped on the locking shaft 41 by the second nut kit 43; the support plate 3 is placed on the second positioning component 2, so that the second conical surface 31 of one end of the support plate 3 mates with the first conical surface 100 of the second positioning component; the locking shaft 41 is passed through the central hole 12 of the first positioning component 1 and through the lathe spindle 7, so that the first conical surface of the first positioning component 1... The second conical surface 31 at the other end of the support plate 3 is engaged with the positioning plate 1001; the positioning plate 1001 is fitted onto the locking shaft 41, so that the end face of the positioning plate 1001 presses against one end of the machine tool spindle 7; one end of the thin-walled cylindrical workpiece 5 is fitted onto the outer periphery of the support plate 3, and the first nut kit 42 is installed on the outside of the positioning plate 1001. The nut of the first nut kit 42 is tightened, so that the locking shaft 41 is axially displaced and the second positioning member 2 moves closer to the first positioning member 1. Under the action of the conical surface engagement, the support plate 3 automatically aligns and expands, thereby correcting the ellipticity of one end of the thin-walled cylindrical workpiece 5 and making the first positioning unit 1000 support one end of the thin-walled cylindrical workpiece 5.

[0046] Specifically, such as Figure 5 As shown, the position of the second positioning member 2 of the second positioning unit 2000 is fixed, and the locking assembly 4 can push the first positioning member 1 closer to the second positioning member 2, thereby causing the support plate 3 to expand. One end of the locking assembly 4 of the second positioning unit 2000 is fixed to the center of the lathe tailstock.

[0047] When using the second positioning unit 2000 to tighten the other end of the thin-walled cylindrical workpiece 5, the second positioning member 2 is also screwed onto the end of the locking shaft 41 with a shoulder through the central threaded hole 21. The second positioning member 2 is locked onto the locking shaft 41 by the second nut kit 43. The support plate 3 is then placed on the second positioning member 2, so that the second conical surface 31 at one end of the support plate 3 mates with the first conical surface 100 of the second positioning member. The locking shaft 41 is then passed through the central hole of the first positioning member 1, so that the first conical surface 100 of the first positioning member 1 mates with the second conical surface 31 at the other end of the support plate 3. Combined; install the first nut kit 42 on the outside of the first positioning component 1, then fix the locking shaft 41 on the center point 8 of the lathe tailstock, then install the center point 8 on the lathe tailstock, move the lathe tailstock, move the support plate 3 into the other end of the thin-walled cylindrical workpiece 5, tighten the nut of the first nut kit 42, so that the first positioning component 1 moves closer to the direction of the second positioning component 2. Under the action of the conical surface cooperation, the support plate 3 automatically aligns and expands, thereby realizing the correction of the ellipticity of the other end of the thin-walled cylindrical workpiece 5, and making the second positioning unit 2000 support the other end of the thin-walled cylindrical workpiece 5.

[0048] The general-purpose tooling for processing thin-walled cylinders in this embodiment, through the combined use of the first positioning unit 1000 and the second positioning unit 2000, can realize the rapid alignment and clamping of thin-walled cylinder workpieces, thereby providing conditions for completing the machining process of thin-walled cylinder workpieces.

[0049] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any changes or substitutions that can be easily conceived by those skilled in the art within the technical scope disclosed in the present utility model should be included within the protection scope of the present utility model.

Claims

1. A clamping device for processing thin-walled cylinders, characterized in that, It includes a first positioning component (1), a second positioning component (2), a support plate (3), and a locking assembly (4); The outer surfaces of the first positioning member (1) and the second positioning member (2) are both provided with a first conical surface (100); The support plate (3) includes a second conical surface (31) and a notch (32). The two second conical surfaces (31) are located at both ends of the inner wall of the support plate (3). The second conical surface (31) has a taper that matches the first conical surface (100), and the end with the larger diameter is located at the end of the support plate (3). The notch (32) penetrates the support plate (3) along the center line direction. The support plate (3) is sleeved on the outer periphery of the first positioning member (1) and the second positioning member (2), and the two second conical surfaces (31) are respectively in contact with the first conical surfaces (100) of the first positioning member (1) and the second positioning member (2); The locking assembly (4) can bring the distance between the first positioning member (1) and the second positioning member (2) closer, so that the support plate (3) expands outward and is tightened on the inner wall of the thin-walled cylindrical workpiece under the cooperation of the first conical surface (100) and the second conical surface (31).

2. The clamping device for processing thin-walled cylinders according to claim 1, characterized in that, The support disk (3) further includes grooves (33), and a plurality of grooves (33) are evenly spaced along the center line of the support disk (3) on the outer surface of the support disk (3).

3. The clamping device for processing thin-walled cylinders according to claim 2, characterized in that, The locking assembly (4) includes a locking shaft (41), and the first positioning member (1) and the second positioning member (2) are both sleeved on the locking shaft (41). The first positioning member (1) is slidably connected to the locking shaft (41), and the second positioning member (2) is fixed in position on the locking shaft (41).

4. The clamping device for processing thin-walled cylinders according to claim 3, characterized in that, The locking assembly (4) further includes a first nut kit (42) for bringing the distance between the first positioning member (1) and the second positioning member (2) closer.

5. The clamping device for processing thin-walled cylinders according to claim 4, characterized in that, The locking assembly (4) further includes a second nut kit (43) for locking the position of the second positioning member (2) on the locking shaft (41).

6. A universal tooling for machining thin-walled cylinders, characterized in that, It includes a first positioning unit (1000) and a second positioning unit (2000), both of which include the clamping device for processing thin-walled cylinders as described in any one of claims 1 to 5; the first positioning unit (1000) and the second positioning unit (2000) are respectively used to internally clamp the two ends of the thin-walled cylinder workpiece.

7. The universal tooling for machining thin-walled cylinders according to claim 6, characterized in that, The position of the first positioning member (1) of the first positioning unit (1000) is fixed, and the locking assembly (4) passes through the lathe spindle and can pull the second positioning member (2) closer to the first positioning member (1) so that the support plate (3) expands.

8. The universal tooling for machining thin-walled cylinders according to claim 7, characterized in that, The first positioning unit (1000) further includes a positioning disk (1001), and the locking assembly (4) is connected to the lathe spindle through the positioning disk (1001).

9. The universal tooling for machining thin-walled cylinders according to claim 6, characterized in that, The position of the second positioning member (2) of the second positioning unit (2000) is fixed, and the locking assembly (4) can push the first positioning member (1) closer to the second positioning member (2) so that the support plate (3) expands.

10. The universal tooling for machining thin-walled cylinders according to claim 9, characterized in that, One end of the locking assembly (4) of the second positioning unit (2000) is fixed to the top of the lathe tailstock.

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