Grinding equipment for arc piece machining

Abstract

The utility model relates to grinding equipment for arc piece machining, which comprises a rack, two arc-shaped mounting fixtures, two groups of telescopic mechanisms, a jacking mechanism, a vertical frame, a turntable, a rotary clamping mechanism and a positioning cone, a working table is arranged at the upper end of the rack, a vertical through hole is formed in the middle of the working table, the two mounting fixtures are respectively arranged at the upper part of the working table, and the two groups of telescopic mechanisms are arranged on the two mounting fixtures. The two sets of telescopic mechanisms are installed on the workbench face and connected with the two installation clamps respectively, the two sealing arc pieces are installed on the inner wall faces of the two installation clamps respectively and distributed coaxially, the lower end of the vertical frame is installed on the jacking mechanism through a cross beam, and the rotary disc is rotatably installed at the upper end of the cross beam. The positioning cone is arranged at the center of the upper end of the turntable; and the rotary clamping mechanism is arranged at the upper end of the vertical frame through the height adjusting assembly. The arc piece inner surface polishing device has the advantages that the structural design is reasonable, the inner surface of an arc piece can be effectively polished, and the problem that an existing machining means cannot meet the roughness requirement of the arc piece is solved.

Description

TECHNICAL FIELD

[0001] The utility model relates to arc piece processing technical field, especially arc piece processing is with grinding equipment. BACKGROUND

[0002] The plug valve is a common valve type for controlling fluid flow in a pipeline. The sealing performance of the plug valve mainly depends on its internal sealing element, and the sealing arc piece is one of the important components, which is a precision part itself, and the quality of which directly affects the performance of the valve body. When the plug valve is closed, the main reason for the leakage in the flow passage is that the surface of the sealing arc piece is scratched or has corrosion pits, so the manufacturing precision of the sealing arc piece directly affects the quality of the plug valve.

[0003] At present, since the sealing arc piece is of irregular shape, the conventional machining method cannot meet the roughness requirement, therefore, it is necessary to develop an arc piece processing grinding equipment to overcome the problem. UTILITY MODEL CONTENTS

[0004] The utility model solves the technical problem that an arc piece processing grinding equipment is provided to effectively overcome the defects of the prior art.

[0005] The technical solution of the utility model to solve the above technical problem is as follows:

[0006] An arc piece processing grinding equipment, comprising a rack, two circular-arc-shaped mounting clamps, two groups of telescopic mechanisms, a jacking mechanism, a stand, a rotating disc, a rotary clamping mechanism and a positioning cone, wherein the upper end of the rack is provided with a workbench surface, the middle part of the workbench surface is provided with a vertical through hole, the two mounting clamps are respectively arranged on the upper part of the workbench surface and symmetrically distributed on the two sides of the through hole, and the arc-shaped openings of the two mounting clamps are close to each other, the two groups of telescopic mechanisms are respectively arranged on the workbench surface and connected with the sides of the two mounting clamps which are away from each other, the two sealing arc pieces are respectively detachably arranged on the inner walls of the two mounting clamps and coaxially distributed, the jacking mechanism is arranged below the through hole, the lower end of the stand is arranged on the jacking mechanism through a cross beam, the rotating disc is rotatably arranged on the upper end of the cross beam, the positioning cone is arranged at the center of the upper end of the rotating disc, the rotary clamping mechanism is arranged on the upper end of the stand through a height adjusting assembly, the grinding rod vertically penetrates the through hole, and the upper end of the grinding rod is assembled with the rotary clamping mechanism, and the lower end center of the grinding rod is abutted with the positioning cone.

[0007] On the basis of the above technical solution, the utility model can also be improved as follows.

[0008] Further, the rotary clamping mechanism is a hydraulic chuck assembly.

[0009] Further, the rotating clamping mechanism is arranged at the lower end of the upper beam, and the upper beam is connected with the height adjusting assembly.

[0010] Further, the height adjusting assembly is a linear movement module.

[0011] Further, the jacking mechanism is a hydraulic cylinder.

[0012] Further, the telescopic mechanism is a hydraulic cylinder.

[0013] Further, the lower end of the two installation clamps on the side away from each other is provided with a sliding block, and the positions corresponding to the through holes on both sides of the workbench are respectively provided with sliding rails, and the sliding block is slidably arranged on the sliding rail on the corresponding side.

[0014] Further, the utility model also comprises a stand column, one side of the stand column is provided with vertically extending guide rails, and the stand frame is arranged on the guide rails through a sliding seat.

[0015] Further, the outer sides of the two sides of the installation clamp are respectively provided with telescopic rods, the inner sides of the two sides of the installation clamp are respectively provided with limiting clamping blocks corresponding to the telescopic rods, the limiting clamping blocks are connected with the corresponding telescopic rods, and the limiting clamping blocks partially extend into the inner sides of the installation clamp.

[0016] Further, the lower edge of the inner side of the installation clamp is provided with an arc-shaped stop part, and the lower end of the sealing arc piece is supported on the stop part.

[0017] The utility model discloses the beneficial effect is: the structure design is reasonable, can effectively polish the inner surface of arc piece, improves the problem that the present processing means cannot satisfy the roughness requirement of arc piece. BRIEF DESCRIPTION OF DRAWINGS

[0018] Figure 1 It is the structure schematic diagram of the arc piece processing and grinding equipment of the utility model;

[0019] Figure 2 It is the top view of the installation clamp and workbench of the arc piece processing and grinding equipment of the utility model;

[0020] Figure 3 It is the structure side view of the stand frame part in the arc piece processing and grinding equipment of the utility model.

[0021] In the drawings, the component list represented by each sign is as follows:

[0022] 1. Frame; 2. Mounting fixture; 3. Telescopic mechanism; 4. Lifting mechanism; 5. Stand; 6. Turntable; 7. Rotary clamping mechanism; 8. Positioning cone; 9. Height adjustment assembly; 10. Grinding rod; 11. Worktable; 20. Top beam; 30. Column; 21. Telescopic rod; 22. Limiting clamping block; 51. Crossbeam; 111. Slide rail; 211. Slider. Detailed Implementation

[0023] The principles and features of this utility model are described below with reference to the accompanying drawings. The examples given are only for explaining this utility model and are not intended to limit the scope of this utility model.

[0024] Example

[0025] like Figure 1 , 2 As shown in Figure 3, the grinding equipment for arc sheet processing in this embodiment includes a frame 1, two arc-shaped mounting fixtures 2, two sets of telescopic mechanisms 3, a lifting mechanism 4, a stand 5, a turntable 6, a rotating clamping mechanism 7, and a positioning cone 8. The frame 1 has a worktable 11 at its upper end, with a vertical through hole (A in the figure) in the center of the worktable 11. The two mounting fixtures 2 are respectively disposed on the upper part of the worktable 11 and symmetrically distributed on both sides of the through hole, with their arc-shaped openings close to each other. The two sets of telescopic mechanisms 3 are respectively mounted on the worktable 11 and respectively connected to the two mounting fixtures 8. The clamps 2 are connected on opposite sides. Two sealing arc plates are detachably mounted on the inner walls of the two mounting clamps 2 and are coaxially distributed. The lifting mechanism 4 is located below the through hole. The lower end of the upright frame 5 is mounted on the lifting mechanism 4 via the crossbeam 51. The turntable 6 is rotatably mounted on the upper end of the crossbeam 51. The positioning cone 8 is mounted at the center of the upper end of the turntable 6. The rotating clamping mechanism 7 is mounted on the upper end of the upright frame 5 via the height adjustment component 9. The grinding rod 10 penetrates the through hole vertically and is assembled with the rotating clamping mechanism 7 at its upper end. The center of its lower end abuts against the positioning cone 8.

[0026] The process of using the grinding equipment for arc sheet processing in this embodiment is as follows:

[0027] First, the two sealing arc pieces of the cock valve are respectively installed on the inner side of the two mounting clamps 2, ensuring that the two sealing arc pieces are coaxially distributed and the arc openings are close to each other. Then, the grinding rod 10 is vertically installed between the positioning cone 8 and the rotating clamping mechanism 7. Specifically, the upper end of the grinding rod 10 is clamped with the rotating clamping mechanism 7, and the clamped grinding rod 10 is adjusted to move downward by the height adjustment assembly 9 until the lower end of the grinding rod 10 abuts against the positioning cone 8. After assembly, the grinding rod 10 is in a vertical state of penetrating the through hole and is coaxially distributed with the two sealing arc pieces. Next, the grinding paste is coated on the surface of the grinding rod 10, and then the two sets of telescopic mechanisms 3 are used to drive the two mounting clamps 2 to move close to each other synchronously until the two sealing pieces almost hold the two sides of the grinding rod 10 (the sealing pieces are coaxially distributed with the grinding rod 10). Then, the rotating clamping mechanism 7 drives the grinding rod 10 to rotate, and the jacking mechanism 4 drives the stand 5 to move up and down reciprocally synchronously, so that the grinding rod 10 rotates and moves axially, thereby effectively grinding the inner surfaces of the two sealing arc pieces. After grinding is completed, stop and drive the two mounting clamps 2 away from each other by the two sets of telescopic mechanisms 3, and then the sealing arc pieces can be removed. The overall structure design is reasonable, which can effectively polish the inner surfaces of the arc pieces and improve the problem that the existing processing means cannot meet the roughness requirements of the arc pieces. The entire device is designed in a vertical manner, and the land area is small.

[0028] In the embodiment, the rotating clamping mechanism 7 adopts a conventional hydraulic chuck assembly with a rotary cylinder on the market, which can tightly hold the upper end of the grinding rod 10 under the action of hydraulic pressure, and cooperate with the positioning cone 8 and the rotating disc to drive the grinding rod 10 to rotate.

[0029] In the embodiment, the tip of the positioning cone 8 faces upward and is coaxially distributed with the center of the hydraulic chuck assembly.

[0030] In the embodiment, the rotating clamping mechanism 7 is installed at the lower end of the upper beam 20, and the upper beam 20 is connected with the height adjustment assembly 9. The design of the upper beam 20 facilitates the assembly of the rotating clamping mechanism 7 on the upper end of the stand 5.

[0031] In the embodiment, the height adjustment assembly 9 adopts a linear motion module of a suitable model on the market.

[0032] In the embodiment, the jacking mechanism 4 adopts a hydraulic cylinder of a suitable model on the market.

[0033] In the embodiment, the telescopic mechanism 3 adopts a hydraulic cylinder of a suitable model on the market.

[0034] As a preferred embodiment, the lower end of each of the two mounting clamps 2 away from each other is provided with a sliding block 211, and the positions corresponding to the through holes on both sides of the workbench surface 11 are respectively provided with sliding rails 111, and the sliding block 211 is slidingly installed on the sliding rail 111 on the corresponding side.

[0035] In the above embodiment, the design of the sliding block 211 and the sliding rail 111 ensures that the mounting clamp 2 can move linearly in the correct direction on the workbench 11, thereby ensuring the coaxiality of the two mounting clamps 2.

[0036] In the embodiment, a column 30 is further included, one side of the column 30 is provided with a vertically extending guide rail, and the stand 5 is arranged on the guide rail through a sliding seat. Through the cooperation of the guide rail on the column 30 and the sliding seat on the stand 5, it is ensured that the stand 5 can move up and down in the correct direction under the driving of the jacking mechanism 4, and the position will not deviate, so that the grinding rod 10 always maintains the coaxiality with the sealing arc piece.

[0037] As a preferred embodiment, the mounting clamp 2 is provided with telescopic rods 21 on both sides, and the inner sides of the mounting clamp 2 are respectively provided with limiting clamping blocks 22 corresponding to the telescopic rods 21. The limiting clamping blocks 22 are connected with the corresponding telescopic rods 21, and part of the limiting clamping blocks 22 extends into the inner side of the mounting clamp 2.

[0038] In the above embodiment, during the installation of the sealing arc piece, the outer surface of the sealing arc piece is attached to the inner surface of the corresponding mounting clamp 2, the two ends of the sealing arc piece are in the same plane, and protrude into the inner side of the mounting clamp 2, and then the telescopic rods 21 are retracted to make the limiting clamping blocks 22 abut against the corresponding ends of the sealing arc piece, so as to clamp the sealing arc piece in the inner side of the mounting clamp 2. The size of the limiting clamping blocks 22 is designed not to protrude into the inner arc surface of the sealing arc piece, thereby ensuring the effective grinding of the grinding rod 10.

[0039] In the embodiment, the inner side of the mounting clamp 2 is provided with a circular arc-shaped stop portion (indicated as B in the figure), and the lower end of the sealing arc piece is supported on the stop portion. When the sealing arc piece is assembled, the lower end abuts against the stop portion, and the stop portion does not protrude into the inner arc of the sealing arc piece. Through the design of the stop portion, it is ensured that the sealing arc piece will not fall or shift downward.

[0040] In the description of the present application, it should be understood that the orientations or positional relationships indicated by the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like are based on the orientations or positional relationships shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, and therefore cannot be understood as indicating or implying that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as limiting the present application.

[0041] In addition, the terms "first", "second", "third", etc. are used only for descriptive purposes and are not to be construed as indicating or implying relative importance or an ordered ranking of the indicated technical features. Thus, features defined with "first", "second" or "third" can explicitly or implicitly include at least one of the features. In the description of the present application, the meaning of "a plurality of" is at least two, for example, two, three, etc., unless otherwise explicitly specified.

[0042] In the present application, unless otherwise explicitly specified and limited, the terms "mounting", "connecting", "connecting", "fixing" and the like should be understood in a broad sense, for example, it can be fixedly connected, or it can be detachably connected, or it can be integrated; it can be mechanically connected, or it can be electrically connected; it can be directly connected, or it can be indirectly connected through an intermediate medium; it can be the internal communication of two elements or the interaction relationship between two elements, unless otherwise explicitly limited. For those skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0043] In the present application, unless otherwise explicitly specified and limited, the first feature is "on" or "under" the second feature. The first and second features can be in direct contact, or the first and second features can be in indirect contact through an intermediate medium. Moreover, the first feature "above", "above" and "above" the second feature can be directly above or obliquely above the second feature, or it can only mean that the horizontal height of the first feature is higher than that of the second feature. The first feature "below", "below" and "below" the second feature can be directly below or obliquely below the second feature, or it can only mean that the horizontal height of the first feature is less than that of the second feature.

[0044] In the description of the present application, the description of the terms "one embodiment", "some embodiments", "example", "specific example" or "some examples" means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present application. In the present application, the illustrative description of the above terms is not necessarily for the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art can combine and combine different embodiments or features of different embodiments or examples described in the present application without contradiction.

[0045] Although the embodiments of the present application have been shown and described above, it can be understood that the above embodiments are exemplary and cannot be understood as limiting the present application. Those skilled in the art can make changes, modifications, replacements and variations to the above embodiments within the scope of the present application.

Claims

1. A grinding apparatus for arc segment machining, characterized by: The utility model provides a kind of grinding device, including rack (1), two circular arc mounting clamps (2), two groups of telescopic mechanisms (3), jacking mechanism (4), stand (5), rotary disc (6), rotary clamping mechanism (7) and positioning cone (8), the upper end of the rack (1) is equipped with workbench surface (11), the middle part of the workbench surface (11) is equipped with vertical through-hole, two mounting clamps (2) are respectively arranged on the upper portion of the workbench surface (11), and symmetrically distributed on the both sides of the through-hole, and the arc-shaped opening of two is close to each other, two groups of telescopic mechanisms (3) are respectively mounted on the workbench surface (11), and are respectively connected with the side of two mounting clamps (2) mutually away, two sealing arc pieces are respectively detachably mounted on the inner wall surface of two mounting clamps (2), and coaxially distributed, jacking mechanism (4) is arranged below the through-hole, the lower end of the stand (5) is mounted on the jacking mechanism (4) by crossbeam (51), rotary disc (6) is rotatably mounted on the upper end of crossbeam (51), positioning cone (8) is mounted on the upper end center of rotary disc (6), rotary clamping mechanism (7) is mounted on the upper end of stand (5) by height adjusting assembly (9), grinding rod (10) vertically penetrates through the through-hole, and the upper end is assembled with rotary clamping mechanism (7), and the lower end center is abutted with positioning cone (8).

2. The polishing apparatus for arc segment machining according to claim 1, characterized by: The rotary clamping mechanism (7) is a hydraulic chuck assembly.

3. The polishing apparatus for arc segment machining according to claim 2, characterized by: The rotary clamping mechanism (7) is mounted on the lower end of the upper beam (20), and the upper beam (20) is connected with the height adjusting assembly (9).

4. The polishing apparatus for arc plate processing according to claim 1, characterized by: The height adjusting assembly (9) is a linear motion module.

5. The polishing apparatus for arc plate processing according to claim 1, characterized by: The jacking mechanism (4) is a hydraulic cylinder.

6. The polishing apparatus for arc plate processing according to claim 1, characterized by: The telescopic mechanism (3) is a hydraulic cylinder.

7. The polishing apparatus for arc segment machining according to claim 1, characterized by: The lower end of the side of two mounting clamps (2) mutually away is equipped with sliding block (211), and the part corresponding to the both sides of the through-hole of the workbench surface (11) is respectively equipped with slide rail (111), and the sliding block (211) is slidably mounted on the slide rail (111) of the corresponding side.

8. The polishing apparatus for arc segment machining according to claim 1, characterized by: It also includes a stand column (30), and the stand column (30) is equipped with a vertically extending guide rail on one side, and the stand (5) is mounted on the guide rail through a sliding seat.

9. The lapping apparatus for arc segment machining according to any one of claims 1 to 8, characterized in that: The outer side of the mounting clamp (2) is respectively equipped with telescopic rod (21), and the inner side of the mounting clamp (2) is respectively equipped with limiting clamping block (22) corresponding to the telescopic rod (21), the limiting clamping block (22) is connected with the corresponding telescopic rod (21), and the limiting clamping block (22) partially extends into the inner side of the mounting clamp (2).

10. The polishing apparatus for arc segment machining according to claim 9, wherein: The inner side of the mounting clamp (2) is equipped with arc-shaped stop part, and the lower end of the sealing arc piece is supported on the stop part.

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