Clamping device for deep processing of centrifugal casting

Abstract

The utility model provides a clamping device for deep processing of centrifugal casting parts, which is mounted on a rack of a deep processing device of the centrifugal casting parts and is used for clamping and positioning workpieces. Comprising a fixed ring fixedly connected with a rack, a rotating ring arranged in the fixed ring, a driving mechanism for driving the rotating ring to rotate and a plurality of positioning pieces arranged on the inner side of the rotating ring. The rotating ring and the fixed ring are coaxially arranged, and the rotating ring is rotationally connected with the fixed ring; at least three sets of positioning pieces are arranged, one ends of the positioning pieces are hinged to the rotating ring, the hinged ends of the positioning pieces are connected with limiting plates, the limiting plates are connected with limiting guide columns, the fixing ring is provided with limiting grooves corresponding to the limiting guide columns, and the limiting guide columns are in sliding fit with the limiting grooves. The clamping device for deep processing of the centrifugal casting part can be self-centered in the process of clamping the centrifugal casting part, so that the centrifugal casting part and the clamping device are coaxial, and machining procedures such as inner wall grinding needing centering can be conveniently carried out.

Description

TECHNICAL FIELD

[0001] The utility model relates to a casting processing auxiliary equipment, specifically speaking, a kind of clamping device of centrifugal casting deep processing. BACKGROUND

[0002] Centrifugal casting is the technology and method that liquid metal is injected into high-speed rotating mold, so that metal liquid does centrifugal motion to fill mold and form casting. Due to centrifugal motion, liquid metal can fill mold well in radial direction and form the free surface of casting, cylindrical inner hole can be obtained without core, which helps to remove gas and inclusions in liquid metal, affects the crystallization process of metal, thereby improving the mechanical properties and physical properties of casting.

[0003] In the production process of centrifugal casting, the demoulded centrifugal casting needs to be heat treated, coated, polished and other deep processing, and in these processing procedures, clamping device is usually needed to clamp and position workpiece. For example, the centrifugal casting inner cavity processing and polishing device disclosed in Chinese patent CN217344792U, the centrifugal casting piece processing taking-out device disclosed in Chinese patent CN220679311U, etc. adopt cylinder or oil cylinder to drive two groups of symmetrical clamping arms to clamp workpiece. However, in the process of polishing and processing workpiece inner cavity, workpiece inner cavity needs to be coaxial with upper polishing mechanism, and two groups of symmetrical clamping arms cannot self-center when clamping workpiece, so workpiece inner cavity cannot be coaxial with polishing mechanism.

[0004] In order to solve the above problems, people have been seeking an ideal technical solution. UTILITY MODEL CONTENT

[0005] The utility model aims at the deficiency of prior art, and provides a kind of clamping device of centrifugal casting deep processing.

[0006] In order to achieve the above purpose, the technical scheme adopted by the utility model is as follows:

[0007] A kind of clamping device of centrifugal casting deep processing is installed on the rack of centrifugal casting deep processing device, and workpiece is clamped and positioned;It includes fixed ring fixedly connected with rack, rotating ring arranged in the inside of fixed ring, drive mechanism for driving rotating ring to rotate and several positioning pieces arranged in the inside of rotating ring;Rotating ring is coaxially arranged with fixed ring, and rotating ring is rotationally connected with fixed ring;Positioning piece is arranged at least in three groups, one end of positioning piece is hinged with rotating ring, and the hinged end of positioning piece is connected with limiting plate, limiting column is connected on limiting plate, limiting groove is arranged on fixed ring corresponding to limiting column, and limiting column and limiting groove are slidingly matched.

[0008] The inside of fixed ring is provided with annular track, and the outside of rotating ring is clamped into annular track and slidingly matched with annular track.

[0009] The positioning member comprises an upper positioning plate and a lower positioning plate, the inner ends of the upper positioning plate and the lower positioning plate are connected through a connecting column, and the upper side of the upper positioning plate and the lower side of the lower positioning plate are respectively provided with a limiting plate.

[0010] The outer side of the fixing ring is respectively provided with a limiting block corresponding to each positioning member, the upper side and the lower side of the limiting block are respectively provided with a limiting slot, and the limiting column is tangent to the inner wall of the limiting slot.

[0011] The outer side of the fixing ring is provided with a stroke hole, the outer side of the rotating ring is provided with a transmission connecting rod, the transmission connecting rod extends out of the stroke hole, and the driving mechanism drives the transmission connecting rod to swing along the stroke hole.

[0012] The upper positioning plate and the lower positioning plate are both arc-shaped plates, the driving mechanism is a telescopic rod, the fixed end of the telescopic rod is hinged to the rack, and the telescopic end of the telescopic rod is hinged to the transmission connecting rod.

[0013] Compared with the prior art, the clamping device for deep processing of centrifugal casting parts has the beneficial effects that the clamping device can be self-centered during clamping of the centrifugal casting part, so that the centrifugal casting part is coaxial with the clamping device, and the machining process, such as inner wall polishing, which needs to be centered, is facilitated. BRIEF DESCRIPTION OF DRAWINGS

[0014] Fig. 1 is a structural schematic view of the utility model.

[0015] Fig. 2 is a structural schematic view of the utility model assembled in a deep processing device for centrifugal casting parts.

[0016] In the figure: 1. fixing ring; 2. rotating ring; 3. positioning member; 4. limiting plate; 5. limiting block; 6. connecting column; 7. limiting slot; 8. transmission connecting rod; 9. stroke hole; 10. telescopic rod; 11. rack; 12. clamping device. DETAILED DESCRIPTION

[0017] The technical scheme of the utility model will be described in further detail below through specific embodiments.

[0018] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installed," "equipped with," and "connected," etc., should be interpreted broadly. For example, "connected" can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium; it can be a connection within two components. "Installed," "equipped with," and "connected" can employ conventional means in the prior art, such as integral installation, snap-fit ​​installation, welding connection, adhesive connection, bolted connection, etc. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances and select suitable connection, setting, or installation methods from the existing technology.

[0019] like Figs. 1-2 As shown, a clamping device for deep processing of centrifugal castings is installed on the frame 11 of a centrifugal casting deep processing device to clamp and position the workpiece. The clamping device 12 includes a fixed ring 1 fixedly connected to the frame 11, a rotating ring 2 disposed inside the fixed ring 1, a driving mechanism for driving the rotating ring 2 to rotate, and a plurality of positioning elements 3 disposed inside the rotating ring 2. The rotating ring 2 is coaxially arranged with the fixed ring 1 and is rotatably connected to the fixed ring 1. At least three sets of positioning elements 3 are provided. One end of the positioning element 3 is hinged to the rotating ring 2, and the hinged end of the positioning element 3 is connected to a limiting plate 4. A limiting guide post is connected to the limiting plate 4. The fixed ring 1 is provided with a limiting groove 7 corresponding to the limiting guide post, and the limiting guide post slides in the limiting groove 7. Specifically, during use, the rotating ring rotates and the positioning elements swing to clamp the workpiece. During the swinging of the positioning elements, the limiting guide post moves within the limiting groove.

[0020] This clamping device for deep processing of centrifugal castings can self-center during the clamping process, ensuring that the centrifugal casting and the clamping device are coaxial. This facilitates machining processes requiring centering, such as inner wall grinding. Specifically, the clamping device can be installed on the frame of a machining equipment. For example, if the inner cavity of the centrifugal casting needs to be ground, the clamping device can be installed on the frame of the grinding equipment using bolts or other fixing structures. The centrifugal casting to be processed is placed in the fixing ring, and after the positioning component clamps the centrifugal casting, the centrifugal casting and the fixing ring are coaxial, facilitating subsequent grinding processes.

[0021] In one embodiment, an annular track is provided on the inner side of the fixed ring 1, and the outer side of the rotating ring 2 is inserted into the annular track and slides with the annular track to facilitate the movement of the rotating ring along the annular track.

[0022] In one embodiment, the positioning element 3 includes an upper positioning plate and a lower positioning plate. The inner ends of the upper positioning plate and the lower positioning plate are connected by a connecting post 6. Limiting plates 4 are respectively provided on the upper side of the upper positioning plate and the lower side of the lower positioning plate to improve the stability of the structure.

[0023] In one of the embodiments, the outer side of the fixing ring 1 is provided with a limiting block 5 corresponding to each positioning member 3, the upper side and the lower side of the limiting block 5 are respectively provided with a limiting slot 7, the limiting column is tangent to the inner wall of the limiting slot 7, facilitating assembly.

[0024] In one of the embodiments, the outer side of the fixing ring 1 is provided with a stroke hole 9, the outer side of the rotating ring 2 is provided with a transmission connecting rod 8, the transmission connecting rod 8 extends out of the stroke hole 9, the driving mechanism drives the transmission connecting rod 8 to swing along the stroke hole 9, thereby driving the rotating ring to rotate.

[0025] In one of the embodiments, the upper positioning plate and the lower positioning plate are both arc-shaped plates, the driving mechanism is a telescopic rod 10, the fixed end of the telescopic rod 10 is hinged to a rack 11, the telescopic end of the telescopic rod 10 is hinged to the transmission connecting rod 8, facilitating driving the rotating ring to rotate through the telescopic rod, specifically, the telescopic rod can adopt the existing common electric telescopic rod or hydraulic telescopic rod product.

[0026] The above embodiments can be combined with each other.

[0027] Finally, it should be noted that: the above embodiments are only used to illustrate the technical solutions of the present application, but not to limit it; although the present application has been described in detail with reference to the preferred embodiments, those skilled in the art should understand that: the specific embodiments of the present application can still be modified or some technical features can be replaced by equivalent; without departing from the spirit of the technical scheme of the present application, they should be covered in the technical scheme range of the present application claimed by the present application.

Claims

1. A clamping device for deep processing of centrifugal castings, mounted on the frame of a centrifugal casting deep processing device, for clamping and positioning the workpiece; characterized in that: The fixed ring is fixedly connected with the rack, the rotating ring is arranged in the fixed ring, the driving mechanism drives the rotating ring to rotate, and the positioning pieces are arranged in the inner side of the rotating ring; the rotating ring is coaxially arranged with the fixed ring and is rotationally connected with the fixed ring; the positioning pieces are arranged in at least three groups, one end of the positioning pieces is hingedly connected with the rotating ring, the hinged end of the positioning pieces is connected with the limiting plate, the limiting plate is connected with the limiting guide column, the fixed ring is provided with the limiting groove corresponding to the limiting guide column, and the limiting guide column and the limiting groove are in sliding fit.

2. The device according to claim 1, characterized in that: The inner side of the fixed ring is provided with an annular track, and the outer side of the rotating ring is clamped into the annular track and in sliding fit with the annular track.

3. The device according to claim 2, characterized in that: The positioning pieces comprise upper positioning plates and lower positioning plates, the inner ends of the upper positioning plates and the lower positioning plates are connected through connecting columns, and the upper side of the upper positioning plate and the lower side of the lower positioning plate are respectively provided with limiting plates.

4. The device according to claim 3, characterized in that: The outer side of the fixed ring is respectively provided with limiting blocks corresponding to each positioning piece, the upper side and the lower side of the limiting block are respectively provided with limiting grooves, and the limiting column is tangent to the inner wall of the limiting groove.

5. The device according to claim 4, characterized in that: The outer side of the fixed ring is provided with a stroke hole, the outer side of the rotating ring is provided with a transmission connecting rod, the transmission connecting rod extends out of the stroke hole, and the driving mechanism drives the transmission connecting rod to swing along the stroke hole.

6. The device according to claim 5, characterized in that: The upper positioning plate and the lower positioning plate are both arc-shaped plates, the driving mechanism is a telescopic rod, the fixed end of the telescopic rod is hingedly connected with the rack, and the telescopic end of the telescopic rod is hingedly connected with the transmission connecting rod.

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