Spherically shaped valve ball core

Abstract

The utility model provides a kind of hemispherical valve ball core convenient to process, including spherical cap;To be processed part, it is arranged in one side of spherical cap, and to be processed part and spherical cap integrally set, to be processed part has to be processed axle hole;Clamping part, clamping part integrally set in the surface of spherical cap away from to be processed part, clamping part is equipped with at least one clamping site, and clamping site corresponds with the clamping mechanism of clamping equipment.The utility model is set to clamping part in ball core blank body, can in the process of subsequent processing, special tool is saved, through the clamping site on clamping part, and clamping site is corresponding with clamping mechanism, can realize quick clamping, compared with prior art, the utility model improves the clamping efficiency of ball core blank, saves the cost brought by the need of a large number of work in the process of ball core processing.

Description

Technical Field

[0001] This utility model relates to the field of ball core processing technology, and in particular to a hemispherical valve ball core that is easy to process. Background Technology

[0002] An eccentric angle stroke hemispherical valve, also called a cam flexure valve, gets its name from its special structure where the ball core rotates almost like a cam during valve opening and closing. It is a type of regulating eccentric hemispherical valve. The ball core mainly consists of a spherical crown, a rotating arm, an eccentric rotating shaft, and a spline hole. In current technology, the spherical crown and spline hole in the machined parts of the blank are designed with added material to allow for machining. The main machining process is "casting – boring – wire EDM spline – spherical surface turning". During boring, a special tooling is used to support the spherical surface, align the rotating shaft, and press the back of the spherical crown with the special tooling. Boring is performed on a horizontal machining center or boring machine. However, in the valve manufacturing industry, due to the wide variety of valve diameters, tooling needs to be designed and manufactured separately for different sizes of ball cores. This results in poor tooling versatility, a large number of tooling components, and high tooling costs. Utility Model Content

[0003] This invention provides a ball core for a hemispherical valve that is easy to process, thereby solving the technical problem of the large variety of tooling required for ball core processing and the high cost of tooling.

[0004] This utility model provides an easy-to-manufacture hemispherical valve core, the easy-to-manufacture hemispherical valve core comprising: Crown; A part to be processed is disposed on one side of the spherical crown, and the part to be processed is integrally disposed with the spherical crown, and the part to be processed has a shaft hole to be processed; The clamping part is integrally disposed on the surface of the spherical crown away from the part to be processed. The clamping part is provided with at least one clamping position, which corresponds to the clamping mechanism of the clamping device.

[0005] In one embodiment of the present invention, the axis of the shaft hole to be processed is eccentrically set with respect to the axis of the spherical crown, and a connecting part is provided between the part to be processed and the spherical crown.

[0006] In one embodiment of the present invention, the clamping part is a polygonal boss, the clamping position is the outer side wall of the polygonal boss, and at least one clamping position is parallel to the axis of the shaft hole to be processed.

[0007] In one embodiment of this utility model, the polygonal boss is a hexagonal boss, the number of clamping positions is three, and adjacent clamping positions are spaced apart.

[0008] In one embodiment of the present invention, the polygonal boss has a first weight-reducing groove.

[0009] In one embodiment of the present invention, the clamping part is a plurality of independent bosses provided on the spherical crown, the clamping position is the sidewall of the independent boss, and at least one of the clamping positions is parallel to the axis of the shaft hole to be processed.

[0010] In one embodiment of this utility model, the number of independent protrusions is three, and adjacent independent protrusions are evenly spaced with the center of the spherical crown as the center.

[0011] In one embodiment of the present invention, the clamping part is a cylindrical boss, and the clamping position is the outer wall of the cylindrical boss.

[0012] In one embodiment of this utility model, the cylindrical boss has a second weight-reducing groove.

[0013] In one embodiment of this utility model, the axis of the shaft hole to be processed is perpendicular to the axis of the spherical crown.

[0014] The beneficial effects of this utility model are as follows: This utility model proposes a ball core for easy processing of a hemispherical valve. By setting a clamping part on the ball core blank body, special tooling can be eliminated in the subsequent processing. Through the clamping position on the clamping part, and by aligning the clamping position with the clamping mechanism, quick clamping can be achieved. Compared with the prior art, this utility model improves the clamping efficiency of the ball core blank and saves the cost caused by the large amount of work required in the ball core processing. Attached Figure Description

[0015] The accompanying drawings, which are incorporated in and form part of this specification, illustrate embodiments consistent with this application and, together with the description, serve to explain the principles of this application. It is obvious that the drawings described below are merely some embodiments of this application, and those skilled in the art can obtain other drawings based on these drawings without any inventive effort.

[0016] In the attached diagram: Figure 1 This is a schematic diagram of the structure of the first embodiment provided in one embodiment of the present utility model; Figure 2 This is a schematic diagram of the first embodiment provided in one embodiment of the present utility model after processing; Figure 3 This is a front view of the first embodiment provided in one embodiment of the present utility model; Figure 4 This is a schematic diagram of the structure of the second embodiment provided in one embodiment of the present utility model; Figure 5 This is a front view of the second embodiment provided in one embodiment of the present utility model; Figure 6This is a schematic diagram of the structure of the third embodiment provided in one embodiment of the present utility model; Figure 7 This is a schematic diagram of the structure of the fourth embodiment provided in one embodiment of the present utility model.

[0017] The attached figures are labeled as follows: 1. Part to be processed, 2. Connecting part, 3. Ball cap, 4. Shaft hole to be processed, 5. Clamping part, 501. First weight reduction groove, 502. Second weight reduction groove, 503. Detailed Implementation

[0018] The following specific examples illustrate the implementation of this utility model. Those skilled in the art can easily understand other advantages and effects of this utility model from the content disclosed in this specification. This utility model can also be implemented or applied through other different specific embodiments. Various details in this specification can also be modified or changed based on different viewpoints and applications without departing from the spirit of this utility model. In the absence of conflict, the following embodiments and features in the embodiments can be combined with each other.

[0019] It should be noted that the illustrations provided in the following embodiments are only schematic representations of the basic concept of the present invention. The drawings only show the components related to the present invention and are not drawn according to the actual number, shape and size of the components. In actual implementation, the form, quantity and proportion of each component can be arbitrarily changed, and the layout of the components may also be more complex.

[0020] In the following description, numerous details are explored to provide a more thorough explanation of embodiments of the present invention. However, it will be apparent to those skilled in the art that embodiments of the present invention may be practiced without these specific details. In other embodiments, well-known structures and devices are shown in block diagram form rather than in detail to avoid obscuring embodiments of the present invention.

[0021] like Figures 1-7 As shown, this utility model provides a ball core for a hemispherical valve that is easy to process.

[0022] Example 1: In an exemplary embodiment, the easy-to-process hemispherical valve core includes a ball crown 3 and a part to be processed 1. The part to be processed 1 is disposed on one side of the ball crown 3, is circular in shape, and is integrally disposed with the ball crown 3. The part to be processed 1 has a shaft hole 4 to be processed, which is the hole to be processed after the ball core blank is fixed. Meanwhile, a clamping part 5 is provided on the surface of the ball crown 3 away from the part to be processed 1. The clamping part 5 is integrally disposed on the ball crown 3 and has at least one clamping position 501, which corresponds to the clamping mechanism of the clamping device.

[0023] In this embodiment, by providing a clamping part 5 on the ball core blank body, special tooling can be eliminated in the subsequent processing. Through the clamping position 501 on the clamping part 5, and by aligning the clamping position 501 with the clamping mechanism, quick clamping can be achieved. Compared with the prior art, this utility model improves the clamping efficiency of the ball core blank and saves the cost caused by the large amount of work required in the ball core processing.

[0024] For example, in this embodiment, the axis of the shaft hole 4 to be processed is eccentrically set with respect to the axis of the spherical crown 3, and a connecting part 2 is provided between the part to be processed 1 and the spherical crown 3. In this embodiment, the connecting part 2 makes the shaft hole 4 to be processed eccentrically set with respect to the spherical crown 3.

[0025] It is worth noting that in this embodiment, the clamping device is a boring machine, and the clamping mechanism is a three-jaw chuck on the boring machine. In other embodiments, other devices or clamping mechanisms may also be used, as long as the clamping part 5 on the ball core corresponds to the clamping mechanism, and the clamping mechanism can clamp the ball core through the clamping part 5. When designing the clamping part 5 and the clamping position 501, the relationship between them and the three-jaw chuck needs to be considered so that all blanks can be clamped by the three-jaw chuck during processing, thereby eliminating the intermediate process of tooling clamping and tooling manufacturing.

[0026] In an exemplary embodiment, the clamping part 5 is a polygonal boss, the clamping position 501 is the outer side wall of the polygonal boss, and at least one clamping position 501 is parallel to the axis of the shaft hole 4 to be processed.

[0027] In this embodiment, by setting the clamping part 5 as a polygonal boss, the three-jaw chuck can clamp the outer wall of the polygonal boss.

[0028] For example, in this embodiment, the polygonal boss is a hexagonal boss, and the number of clamping positions 501 is three, with adjacent clamping positions 501 spaced apart. Figure 3 As shown, in this embodiment, the sidewalls corresponding to the clamping position 501 are surface A, surface B, and surface C, which correspond to the three jaws of the three-jaw chuck. Surface A is parallel to the axis of the shaft hole 4 to be processed, which serves two purposes: first, to minimize interference between the tool and the jaws during three-jaw clamping; second, when installing the three-jaw chuck on a horizontal machining center or boring machine, the installation direction of one of the jaws can be set in advance to be perpendicular to the machine tool's feed direction, thereby achieving workpiece orientation positioning during clamping and ensuring that the shaft hole 4 to be processed on the workpiece is consistent with the machine tool's feed direction.

[0029] For example, in this embodiment, the structural dimensions of the hexagonal boss are determined based on the stability of the three-jaw chuck and the economy of the blank structure. The circumscribed circle diameter φd of the hexagonal boss is rounded up to φD*(0.60~0.8), where φD is the maximum diameter of the spherical crown 3 and φd≥φ30mm. The minimum height of the hexagonal boss relative to the spherical crown 3 is 20~30mm.

[0030] In another embodiment, the polygonal boss has a first weight-reducing groove 502. The first weight-reducing groove 502 is a circular groove, which is located at the center of the polygonal boss and coincides with the axis of the spherical cap 3.

[0031] It is worth noting that in this embodiment, the hexagonal boss clamping position 501 structure is mainly used for the ball core blank of medium-diameter valves.

[0032] Example 2: In another embodiment, the clamping part 5 is a plurality of independent bosses provided on the spherical crown 3, the clamping position 501 is the side wall of the independent boss, and at least one clamping position 501 is parallel to the axis of the shaft hole 4 to be processed.

[0033] In this embodiment, unlike the polygonal bosses described above, the independent bosses are single protrusions that are not continuous with each other. Each independent boss corresponds to a jaw of the three-jaw chuck to clamp the ball core, thereby further reducing costs.

[0034] For example, the number of independent bosses is three, and adjacent independent bosses are evenly spaced with the center of the spherical cap 3 as the center, such as... Figure 5 As shown, in this embodiment, the three clamping positions 501 are surface D, surface E and surface F respectively.

[0035] For example, one of the bosses is located on one side of the part to be processed 1. The surface of this boss used for clamping by the three-jaw chuck is parallel to the part to be processed 1, which is surface D in this embodiment. During clamping, the three jaws of the three-jaw chuck correspond uniquely to the three sides of the three bosses. The specific orientation design has the same purpose and principle as the hexagonal boss clamping position 501 structure.

[0036] The dimensions of the independent boss are designed based on the stability of the three-jaw chuck and the economy of the blank structure. The boss should be placed as close as possible to the three edges of the spherical crown, with a width of 30–50 mm and a height of 20–30 mm. It is worth noting that the independent boss clamping position 501 structure is mainly used for ball core blanks of medium and large diameter valves.

[0037] Example 3: In an exemplary embodiment, the clamping part 5 is a cylindrical boss, and the clamping position 501 is the outer wall of the cylindrical boss. Unlike the two types of bosses mentioned above, the boss in this embodiment is circular. During clamping, the clamping direction needs to be determined by machining the shaft hole through the ball core blank, so that the shaft hole 4 to be machined is in the same direction as the tool feed.

[0038] For example, the diameter φd of the cylindrical boss is rounded up to φD*(0.60~0.8), where φD is the maximum diameter of the 3rd part of the spherical cap, φd is the outer diameter of the cylindrical boss, and φd≥φ30mm; the height of the boss is 20~30mm.

[0039] For example, in this embodiment, a second weight-reducing groove 503 can also be opened at the center of the cylindrical boss to reduce the overall weight of the blank and reduce material costs.

[0040] It is worth noting that the cylindrical boss clamping position 501 structure is mainly used for ball core blanks of small and medium diameter valves.

[0041] Example 4: In one exemplary embodiment, such as Figure 7 As shown, the axis of the shaft hole 4 to be machined is perpendicular to the axis of the ball crown 3, and is used to machine the ball core of the concentric angle stroke hemispherical valve. This is an extension of the above scheme.

[0042] In an exemplary embodiment, after the aforementioned shaft hole 4 is machined, the spherical surface of the ball core needs to be machined to form the desired ball core. Therefore, the clamping portion 5 remaining on the ball core can be machined off by a lathe to form the target ball core.

[0043] In summary, by providing a clamping part 5 on the ball core blank body, this utility model can eliminate the need for special tooling in subsequent processing. Through the clamping position 501 on the clamping part 5, and by aligning the clamping position 501 with the clamping mechanism, rapid clamping can be achieved. Compared with the prior art, this utility model improves the clamping efficiency of the ball core blank and saves the cost caused by the large amount of work required in the ball core processing.

[0044] The above embodiments are merely illustrative of the principles and effects of this utility model and are not intended to limit the scope of this utility model. Any person skilled in the art can modify or alter the above embodiments without departing from the spirit and scope of this utility model. Therefore, all equivalent modifications or alterations made by those skilled in the art without departing from the spirit and technical concept disclosed in this utility model should still be covered by the claims of this utility model.

Claims

1. A ball core for a hemispherical valve that is easy to manufacture, characterized in that, include: Crown; A part to be processed is disposed on one side of the spherical crown, and the part to be processed is integrally disposed with the spherical crown, and the part to be processed has a shaft hole to be processed; The clamping part is integrally disposed on the surface of the spherical crown away from the part to be processed. The clamping part is provided with at least one clamping position, which corresponds to the clamping mechanism of the clamping device.

2. The easy-to-manufacture hemispherical valve core according to claim 1, characterized in that: The axis of the shaft hole to be processed is eccentrically set with respect to the axis of the spherical crown, and a connecting part is provided between the part to be processed and the spherical crown.

3. The easily machinable hemispherical valve core according to claim 1 or 2, characterized in that: The clamping part is a polygonal boss, the clamping position is the outer side wall of the polygonal boss, and at least one clamping position is parallel to the axis of the shaft hole to be processed.

4. The easy-to-manufacture hemispherical valve core according to claim 3, characterized in that: The polygonal boss is a hexagonal boss, and the number of clamping positions is three, with adjacent clamping positions spaced apart.

5. The easy-to-manufacture hemispherical valve core according to claim 3, characterized in that: The polygonal boss has a first weight-reducing groove.

6. The easily machinable hemispherical valve core according to claim 1 or 2, characterized in that: The clamping part consists of multiple independent bosses provided on the spherical crown, and the clamping position is the side wall of the independent boss. At least one of the clamping positions is parallel to the axis of the shaft hole to be processed.

7. The easily machinable hemispherical valve core according to claim 6, characterized in that: The number of independent protrusions is three, and adjacent independent protrusions are evenly spaced with the center of the spherical crown as the center.

8. The easily machinable hemispherical valve core according to claim 1 or 2, characterized in that: The clamping part is a cylindrical boss, and the clamping position is the outer side wall of the cylindrical boss.

9. The easily machinable hemispherical valve core according to claim 8, characterized in that: The cylindrical boss has a second weight-reducing groove.

10. The easily machinable hemispherical valve core according to claim 1, characterized in that: The axis of the shaft hole to be processed is perpendicular to the axis of the spherical crown.

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