Piston ring opening cutting device

Abstract

The utility model discloses a piston ring opening cutting device which comprises a workbench, a piston ring fixing mechanism and an opening cutting mechanism, the piston ring fixing mechanism is arranged on the workbench, and the opening cutting mechanism is arranged on one side of the piston ring fixing mechanism; the piston ring fixing mechanism comprises an arc-shaped fixing frame, a first arc-shaped hinging frame, a second arc-shaped hinging frame and an adjusting assembly, the first arc-shaped hinging frame and the second arc-shaped hinging frame are hinged to the two opposite ends of the arc-shaped fixing frame respectively, and the first arc-shaped hinging frame and the second arc-shaped hinging frame are connected through the adjusting assembly. The piston ring cutting device overcomes the defects that when the piston ring cutting device is used, a plurality of piston rings need to be plugged into a positioning sleeve, opening cutting is carried out uniformly, and due to the fact that the inner diameter of the positioning sleeve is usually smaller than the diameter of the piston ring, the plugging difficulty is large, and operation is very inconvenient. According to the piston ring opening cutting device, a plurality of piston rings can be fixed conveniently, and opening cutting can be carried out uniformly.

Description

Technical Field

[0001] This utility model relates to the field of piston ring opening cutting, specifically, to a piston ring opening cutting device. Background Technology

[0002] Piston rings are a sealing component of steam turbine units. During the manufacturing of this component, the machining of the left and right overlapping conical surfaces is completed on an online cutting machine. The machining accuracy of the angle and dimensions of the left and right sides of the overlapping conical surfaces determines the sealing performance. In order to ensure the machining quality of the conical surfaces, a positioning tool for cutting the opening bevel of the piston ring was developed.

[0003] Chinese Patent No. CN201822195241.2 discloses a positioning fixture for wire EDM piston ring openings, which directly fixes the piston ring as the outer periphery through a positioning sleeve.

[0004] The applicant discovered the following technical problems when implementing the above-mentioned technical solution:

[0005] When using this device, multiple piston rings need to be inserted into the positioning sleeve and the opening is cut uniformly. Since the inner diameter of the positioning sleeve is often smaller than the diameter of the piston ring, it is difficult to insert them and the operation is very inconvenient.

[0006] Therefore, providing a piston ring opening cutting device that facilitates fixing multiple piston rings and uniformly cutting the openings is a problem that this utility model urgently needs to solve. Utility Model Content

[0007] To address the aforementioned technical problems, the purpose of this invention is to overcome the limitations of existing devices that require multiple piston rings to be inserted into a positioning sleeve and then uniformly cut open. Since the inner diameter of the positioning sleeve is often smaller than the diameter of the piston ring, insertion is difficult and inconvenient. Therefore, this invention provides a piston ring cutting device that facilitates the fixing of multiple piston rings and uniform cutting of their openings.

[0008] To achieve the above objectives, this utility model provides a piston ring opening cutting device. The device includes a worktable, a piston ring fixing mechanism, and an opening cutting mechanism. The piston ring fixing mechanism is disposed on the worktable, and the opening cutting mechanism is disposed on one side of it. The piston ring fixing mechanism includes an arc-shaped fixing frame, a first arc-shaped hinge frame, a second arc-shaped hinge frame, and an adjusting component. The first arc-shaped hinge frame and the second arc-shaped hinge frame are respectively hinged to opposite ends of the arc-shaped fixing frame. The first arc-shaped hinge frame and the second arc-shaped hinge frame are connected by an adjusting component, which is used to adjust the opening size of the first arc-shaped hinge frame and the second arc-shaped hinge frame.

[0009] Preferably, the adjusting component includes: a connecting member and an adjusting wrench. One end of the connecting member is hinged to the outer end of the first arc-shaped hinge frame, and the other end is hinged to the middle part of the adjusting wrench. One end of the adjusting wrench is hinged to the outer end of the second arc-shaped hinge frame.

[0010] Preferably, the connecting member is in a "U" shape.

[0011] Preferably, the adjusting wrench is in a "Γ" shape.

[0012] Preferably, the opening cutting mechanism includes: a rotating frame, a rotating shaft, a cutting wheel and a driving component. One end of the rotating frame is rotatably arranged on one side of the piston ring fixing mechanism, and the other end is rotatably provided with a rotating shaft through the driving component. The cutting wheel is coaxially and rotatably arranged on the rotating shaft.

[0013] Preferably, at least two cutting wheels are coaxially and spacedly arranged on the rotating shaft.

[0014] Preferably, the driving component includes: a rotating motor, a first synchronous pulley, a second synchronous pulley and a synchronous belt. The rotating motor is arranged on the rotating frame, and a first synchronous pulley is coaxially arranged on its output shaft. One end of the rotating shaft is coaxially provided with a second synchronous pulley. The two opposite ends of the synchronous belt are respectively sleeved on the first synchronous pulley and the second synchronous pulley.

[0015] Preferably, the opening cutting mechanism further includes a reset elastic member. One end of the reset elastic member is arranged at the end of the rotating frame far from the cutting wheel, and the other end is arranged obliquely below the side of the rotating frame far from the cutting wheel.

[0016] Preferably, a handle is horizontally arranged on one side of the rotating frame.

[0017] According to the above technical solution, the beneficial effect of the present utility model compared with the prior art is as follows: In this application, the adjusting component is used to enlarge the opening between the first arc-shaped hinge frame and the second arc-shaped hinge frame, then the piston rings are stacked and placed between the first arc-shaped hinge frame and the second arc-shaped hinge frame, and then the adjusting component is used to reduce the opening between the first arc-shaped hinge frame and the second arc-shaped hinge frame, so as to fix the stacked piston rings, and then the opening cutting mechanism is used to uniformly cut the openings of the stacked piston rings; this fixing method is relatively simple to operate and improves work efficiency.

[0018] Other features and advantages of the present utility model will be described in detail in the subsequent specific implementation part; moreover, the parts not involved in the present utility model are the same as the prior art or can be implemented by using the prior art. Description of the Drawings

[0019] The accompanying drawings are provided to further illustrate the present invention and form part of the specification. They are used together with the following detailed description to explain the present invention, but do not constitute a limitation thereof. In the drawings:

[0020] Figure 1 This is a three-dimensional piston ring opening cutting device provided in a preferred embodiment of the present invention. Figure 1 .

[0021] Figure 2 This is a partial three-dimensional view of the piston ring opening cutting device provided in a preferred embodiment of the present invention. Figure 1 .

[0022] Figure 3 This is a partial three-dimensional view of the piston ring opening cutting device provided in a preferred embodiment of the present invention. Figure 2 .

[0023] Figure 4 This is a three-dimensional representation of a piston ring opening cutting device provided in a preferred embodiment of the present invention. Figure 2 .

[0024] Figure 5 This is a three-dimensional representation of a piston ring opening cutting device provided in a preferred embodiment of the present invention. Figure 3 .

[0025] Explanation of reference numerals in the attached drawings: 1-Workbench; 2-Piston ring fixing mechanism; 201-Arc-shaped fixing frame; 202-First arc-shaped hinge frame; 203-Second arc-shaped hinge frame; 204-Adjusting component; 20401-Connector; 20402-Adjusting lever; 3-Opening cutting mechanism; 301-Rotating frame; 30101-Handle; 302-Rotating shaft; 303-Cutting wheel; 304-Drive component; 30401-Rotating motor; 30402-First synchronous pulley; 30403-Second synchronous pulley; 30404-Synchronous belt; 305-Reset elastic element. Detailed Implementation

[0026] The specific embodiments of this utility model will be described in detail below with reference to the accompanying drawings. It should be understood that the specific embodiments described herein are for illustration and explanation only and are not intended to limit the scope of this utility model.

[0027] In the description of the embodiments of this utility model, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," indicating orientation or positional relationships, are based on the orientation or positional relationships shown in the accompanying drawings, or the orientation or positional relationships commonly used when the utility model product is in use. These are merely for the convenience of describing the utility model and simplifying the description, and do not indicate or imply that the device or component referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on the utility model. Furthermore, the terms "first," "second," and "third," etc., are only used for distinguishing descriptions and should not be construed as indicating or implying relative importance. Additionally, the terms "horizontal," "vertical," and "suspended," etc., do not indicate that the component is required to be absolutely horizontal or suspended, but rather that it can be slightly tilted. For example, "horizontal" simply means that its direction is more horizontal than "vertical," and does not mean that the structure must be completely horizontal, but can be slightly tilted.

[0028] In the description of the embodiments of this utility model, it should also be noted that, unless otherwise explicitly specified and limited, the terms "set," "install," "connect," and "link" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; 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; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0029] To further understand the features, technical means, and specific objectives and functions achieved by this utility model, the following detailed description of this utility model is provided in conjunction with the accompanying drawings and specific embodiments.

[0030] Reference Figure 1 and Figure 3 A piston ring opening cutting device, the device comprising: a worktable 1, a piston ring fixing mechanism 2, and an opening cutting mechanism 3, wherein the piston ring fixing mechanism 2 is disposed on the worktable 1, and the opening cutting mechanism 3 is disposed on one side thereof; wherein, the piston ring fixing mechanism 2 comprises: an arc-shaped fixing frame 201, a first arc-shaped hinge frame 202, a second arc-shaped hinge frame 203, and an adjusting component 204, wherein the first arc-shaped hinge frame 202 and the second arc-shaped hinge frame 203 are respectively hinged to opposite ends of the arc-shaped fixing frame 201, and the first arc-shaped hinge frame 202 and the second arc-shaped hinge frame 203 are connected by the adjusting component 204, the adjusting component 204 being used to adjust the opening size of the first arc-shaped hinge frame 202 and the second arc-shaped hinge frame 203.

[0031] In this application, the adjusting component 204 is used to enlarge the opening between the first arc-shaped hinge frame 202 and the second arc-shaped hinge frame 203. Then, the piston rings are stacked and placed between the first arc-shaped hinge frame 202 and the second arc-shaped hinge frame 203. Subsequently, the adjusting component 204 is used to reduce the opening between the first arc-shaped hinge frame 202 and the second arc-shaped hinge frame 203, thereby fixing the stacked piston rings. Then, the opening cutting mechanism 3 is used to uniformly cut the openings of the stacked piston rings; this fixing method is relatively simple to operate and improves work efficiency.

[0032] Refer to Figure 3 : The adjusting component 204 includes: a connecting piece 20401 and an adjusting wrench 20402. One end of the connecting piece 20401 is hinged to the outer end of the first arc-shaped hinge frame 202, and the other end is hinged to the middle part of the adjusting wrench 20402. One end of the adjusting wrench 20402 is hinged to the outer end of the second arc-shaped hinge frame 203.

[0033] In this application, by掰动 adjusting wrench 20402, the first arc-shaped hinge frame 202 and the second arc-shaped hinge frame 203 are driven to move away from or close to each other through the connecting piece 20401, thereby adjusting the opening size between the first arc-shaped hinge frame 202 and the second arc-shaped hinge frame 203.

[0034] Refer to Figure 2 and Figure 3 : The connecting piece 20401 is in a "U" shape.

[0035] In this application, this design is adopted to prevent the connecting piece 20401 from being cut off together when the opening cutting mechanism 3 is working.

[0036] Refer to Figure 2 and Figure 3 : The adjusting wrench 20402 is in a "厂" shape.

[0037] In this application, the "厂" shape structure optimizes the mechanical conduction path, making it more ergonomic for the user to掰动 the adjusting wrench 20402. It can reduce the deviation of the hand force application angle and achieve fast and precise adjustment. This design avoids the defect of the traditional straight rod type adjusting device that requires multiple fine adjustments.

[0038] Refer to Figure 4 : The opening cutting mechanism 3 includes: a rotating frame 301, a rotating shaft 302, a cutting wheel 303, and a driving component 304. One end of the rotating frame 301 is rotatably arranged on one side of the piston ring fixing mechanism 2, and the other end is rotatably provided with a rotating shaft 302 through the driving component 304. The cutting wheel 303 is coaxially and rotatably arranged on the rotating shaft 302.

[0039] This application starts the drive assembly 304 to drive the rotating shaft 302 to rotate, thereby driving the cutting wheel 303 to rotate. Then, the rotating frame 301 is rotated so that the cutting wheel 303 rotates to the opening of the first arc-shaped hinge frame 202 and the second arc-shaped hinge frame 203 to cut the piston ring.

[0040] Reference Figure 4 At least two cutting wheels 303 are coaxially spaced on the rotating shaft 302.

[0041] This application uses a design that allows for the direct cutting of the piston ring opening in one operation, eliminating the need for adjustments to the piston ring or the cutting wheel 303, and requiring multiple cuts.

[0042] Reference Figure 5 The drive assembly 304 includes a rotary motor 30401, a first synchronous pulley 30402, a second synchronous pulley 30403, and a synchronous belt 30404. The rotary motor 30401 is mounted on the rotating frame 301, and its output shaft is coaxially mounted with the first synchronous pulley 30402. One end of the rotating shaft 302 is coaxially mounted with the second synchronous pulley 30403. The synchronous belt 30404 is respectively sleeved on the first synchronous pulley 30402 and the second synchronous pulley 30403 at opposite ends.

[0043] This application starts the rotary motor 30401 to drive the first synchronous pulley 30402 to rotate, thereby driving the second synchronous pulley 30403 to rotate via the synchronous belt 30404, and then driving the cutting wheel 303 to rotate via the rotating shaft 302.

[0044] Reference Figure 4 The opening cutting mechanism 3 also includes a reset elastic element 305. One end of the reset elastic element 305 is located at the end of the rotating frame 301 away from the cutting wheel 303, and the other end is located at the lower side of the rotating frame 301 away from the cutting wheel 303.

[0045] The reset elastic element 305 of this application stores potential energy through preload, automatically driving the rotating frame 301 back to its initial position after the cutting operation is completed. Compared with traditional manual reset devices, it can reduce the number of operation steps by more than 50%.

[0046] Reference Figure 5 A handle 30101 is horizontally provided on one side of the rotating frame 301.

[0047] The user of this application can achieve the opening cutting of the piston ring by holding the handle 30101 to drive the rotating frame 301 to rotate against the pulling force of the reset elastic element 305.

[0048] In use, the device provided by this utility model adjusts the openings of the first arc-shaped hinge frame 202 and the second arc-shaped hinge frame 203 by adjusting the component 204, then stacks the piston rings between the first arc-shaped hinge frame 202 and the second arc-shaped hinge frame 203, and then adjusts the openings of the first arc-shaped hinge frame 202 and the second arc-shaped hinge frame 203 by adjusting the component 204 to fix the stacked piston rings. Finally, the opening cutting mechanism 3 uniformly cuts the openings of the stacked piston rings. This fixing method is relatively simple to operate and improves work efficiency.

[0049] The preferred embodiments of the present invention have been described in detail above with reference to the accompanying drawings. However, the present invention is not limited to the specific details of the above embodiments. Within the scope of the technical concept of the present invention, various simple modifications can be made to the technical solution of the present invention, and these simple modifications all fall within the protection scope of the present invention.

[0050] It should also be noted that the various specific technical features described in the above specific embodiments can be combined in any suitable way without contradiction. In order to avoid unnecessary repetition, this utility model will not describe the various possible combinations separately.

[0051] Furthermore, various different embodiments of this utility model can be combined in any way, as long as they do not violate the spirit of this utility model, they should also be regarded as the content disclosed by this utility model.

Claims

1. A piston ring opening cutting device, characterized in that, The device includes: a workbench (1), a piston ring fixing mechanism (2), and an opening cutting mechanism (3). The piston ring fixing mechanism (2) is arranged on the workbench (1), and the opening cutting mechanism (3) is arranged on one side thereof; wherein, The piston ring fixing mechanism (2) includes: an arc-shaped fixing frame (201), a first arc-shaped hinge frame (202), a second arc-shaped hinge frame (203), and an adjusting component (204). The two opposite ends of the arc-shaped fixing frame (201) are respectively hinged with the first arc-shaped hinge frame (202) and the second arc-shaped hinge frame (203). The first arc-shaped hinge frame (202) and the second arc-shaped hinge frame (203) are connected by the adjusting component (204), and the adjusting component (204) is used to adjust the opening size between the first arc-shaped hinge frame (202) and the second arc-shaped hinge frame (203).

2. The piston ring opening cutting device according to claim 1, characterized in that, The adjusting component (204) includes: a connecting piece (20401) and an adjusting wrench (20402). One end of the connecting piece (20401) is hinged to the outer end of the first arc-shaped hinge frame (202), and the other end is hinged to the middle part of the adjusting wrench (20402). One end of the adjusting wrench (20402) is hinged to the outer end of the second arc-shaped hinge frame (203).

3. The piston ring opening cutting device according to claim 2, characterized in that, The connecting piece (20401) is in a "U" shape.

4. The piston ring opening cutting device according to claim 2, characterized in that, The adjusting wrench (20402) is in a "Γ" shape.

5. A piston ring opening cutting device according to claim 1, characterized in that, The opening cutting mechanism (3) includes: a rotating frame (301), a rotating shaft (302), a cutting wheel (303), and a driving component (304). One end of the rotating frame (301) is rotatably arranged on one side of the piston ring fixing mechanism (2), and the other end is rotatably provided with a rotating shaft (302) through the driving component (304). The cutting wheel (303) is coaxially and rotatably arranged on the rotating shaft (302).

6. A piston ring opening cutting device according to claim 5, characterized in that, At least two cutting wheels (303) are coaxially and spacedly arranged on the rotating shaft (302).

7. A piston ring opening cutting device according to claim 5, characterized in that, The driving component (304) includes: a rotating motor (30401), a first synchronous pulley (30402), a second synchronous pulley (30403), and a synchronous belt (30404). The rotating motor (30401) is arranged on the rotating frame (301), and a first synchronous pulley (30402) is coaxially arranged on its output shaft. One end of the rotating shaft (302) is coaxially provided with a second synchronous pulley (30403). The two opposite ends of the synchronous belt (30404) are respectively sleeved on the first synchronous pulley (30402) and the second synchronous pulley (30403).

8. A piston ring opening cutting device according to claim 5, characterized in that, The opening cutting mechanism (3) further includes a reset elastic member (305). One end of the reset elastic member (305) is arranged at one end of the rotating frame (301) away from the cutting wheel (303), and the other end is arranged obliquely below one side of the rotating frame (301) away from the cutting wheel (303).

9. A piston ring opening cutting device according to claim 5, characterized in that, A handle (30101) is horizontally arranged on one side of the rotating frame (301).

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