Flange hole machining and positioning clamp in electric control valve

Abstract

The utility model discloses an electric control valve flange hole processing positioning clamp which comprises a fixed base, a mounting plate is fixedly arranged at the center of the upper end face of the fixed base through a stand column, a two-way screw rod is rotatably arranged between the bottom face of the mounting plate and the fixed base, and a motor used for driving the two-way screw rod to rotate is fixedly arranged in the fixed base. The two sides of the center of the bidirectional lead screw are symmetrically connected with threaded sleeve blocks in a threaded mode, the left side face and the right side face of each threaded sleeve block are each provided with a connecting rod in a hinged mode, an arc-shaped clamping plate is arranged between the two connecting rods located on the same side in a hinged mode, and a lower pressing assembly is fixedly arranged on the outer side face of each arc-shaped clamping plate. The flange clamping device is high in universality and prevents the flange from deviating on the horizontal plane, fastening bolts and a pressing plate in the lower pressing assembly can press the flange in the vertical direction from the outer side of the flange, and the flange is effectively prevented from jumping in the vertical direction during drilling.

Description

Technical Field

[0001] The utility model relates to the technical field of flange clamping devices, in particular to a flange hole machining and positioning fixture in an electric regulating valve. Background Art

[0002] Electric control valves are critical actuator instruments in industrial automation process control. During the manufacturing process, drilling of the flanges is often necessary. Currently, the flange fixing fixtures used for drilling holes in electric control valve flanges have certain drawbacks. Existing flange fixing fixtures typically clamp the flange from the inside or outside. While this clamping method can prevent the flange from shifting horizontally to a certain extent, it is difficult to prevent vertical movement of the flange during drilling, thus affecting the accuracy and quality of the drilling. Utility Model Content

[0003] (1) Technical issues

[0004] The purpose of the utility model is to provide a flange hole processing positioning fixture for an electric regulating valve, so as to solve the problem that the existing flange fixing fixture can only prevent horizontal deviation but cannot avoid vertical jump when drilling the flange of the electric regulating valve, thereby improving the drilling accuracy and quality.

[0005] (2) Technical content

[0006] In order to solve the above technical problems, the technical solution of the utility model is: a flange hole processing and positioning fixture in an electric regulating valve, comprising a fixed base, which is fixed to a drilling machine by bolts, a mounting plate fixed to the center of the upper end face of the fixed base by a column, a bidirectional screw rod is rotatably arranged between the bottom surface of the mounting plate and the fixed base, a motor for driving the bidirectional screw rod to rotate is fixed inside the fixed base, threaded sleeves are symmetrically threaded on both sides of the center of the bidirectional screw rod, and connecting rods are hinged on the left and right side surfaces of the two threaded sleeves, an arc-shaped splint is hinged between the two connecting rods on the same side, and a lower clamping assembly is fixed on the outer side surface of the arc-shaped splint.

[0007] Furthermore, a guide block is fixedly provided on the side surface of the threaded sleeve block, and the column passes through the guide block and is slidably connected to the guide block.

[0008] Furthermore, the lower clamping assembly includes an ear plate fixedly arranged on the outer side of the arc-shaped clamping plate, a fastening bolt is threadedly connected to the ear plate, and a clamping plate is rotatably arranged at the bottom of the fastening bolt.

[0009] Furthermore, a slider is fixedly provided on one side of the pressing plate close to the arc-shaped clamping plate, and a sliding groove is provided on the outer side of the arc-shaped clamping plate for the slider to slide and limit.

[0010] Furthermore, an annular groove is provided on the upper end surface of the fixed base for facilitating drilling.

[0011] (3) Technical effects

[0012] Compared with the prior art, the utility model has the following advantages:

[0013] This clamp uses a bidirectional screw to drive the threaded sleeve, which in turn drives the connecting rod and curved clamping plate to clamp the inner side of the flange. This adaptable fixture accommodates flanges of varying sizes, offering high versatility and preventing horizontal flange deviation. The clamping bolts and clamping plate in the lower clamping assembly provide vertical compression from the outside of the flange, effectively preventing vertical flange movement during drilling and significantly improving drilling accuracy and quality. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 This is a schematic diagram of the three-dimensional structure of the utility model Figure 1 .

[0015] Figure 2 This is a schematic diagram of the three-dimensional structure of the utility model Figure 2 .

[0016] Figure 3 This is a schematic diagram of the three-dimensional structure of the utility model Figure 3 .

[0017] Figure 4 It is a main structural diagram of the present utility model.

[0018] Figure 5 It is a left-side structural schematic diagram of the present utility model.

[0019] Figure 6 It is a schematic diagram of the cross-sectional structure of the present utility model.

[0020] As shown in the figure: 1. Fixed base; 2. Column; 3. Mounting plate; 4. Bidirectional screw; 5. Motor; 6. Threaded sleeve; 7. Connecting rod; 8. Arc-shaped clamping plate; 9. Lower clamping assembly; 10. Guide block; 11. Ear plate; 12. Fastening bolt; 13. Clamping plate; 14. Slider; 15. Slide groove; 16. Annular groove. DETAILED DESCRIPTION

[0021] In the description of the present invention, it should be understood that the terms "upper", "lower", "front", "back", "left", "right", "inside", "outside", "center", etc., indicating directions or positional relationships, are based on the directions or positional relationships shown in the accompanying drawings. They are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific direction structure and operation. Therefore, they cannot be understood as limitations on the present invention.

[0022] It should also be noted that, in the description of this utility model, unless otherwise expressly specified or limited, the terms "provided with," "installed," "connected," and "connected" should be understood in a broad sense. For example, they may refer to fixed connections, detachable connections, or integral connections; they may refer to mechanical connections or electrical connections; they may refer to direct connections or indirect connections through an intermediate medium; and they may refer to internal communication between two components. Those skilled in the art will be able to understand the specific meanings of the above terms in this utility model based on specific circumstances.

[0023] The present invention will be described in further detail below with reference to the accompanying drawings.

[0024] Combined with attachment Figure 1 To the attached Figure 6 , a flange hole processing and positioning fixture in an electric regulating valve, including a fixed base 1, the fixed base 1 is fixed to a drilling machine by bolts, and a mounting plate 3 is fixed to the center of the upper end surface of the fixed base 1 through a column 2, and a bidirectional screw rod 4 is rotatably provided between the bottom surface of the mounting plate 3 and the fixed base 1, and a motor 5 for driving the bidirectional screw rod 4 to rotate is fixed inside the fixed base 1, and a threaded sleeve 6 is symmetrically threaded on both sides of the center of the bidirectional screw rod 4, and a connecting rod 7 is hinged on the left and right sides of the two threaded sleeves 6, and an arc-shaped splint 8 is hinged between the two connecting rods 7 on the same side, and a lower clamping assembly 9 is fixed on the outer side of the arc-shaped splint 8, and a guide block 10 is fixed on the side of the threaded sleeve 6, and the column 2 passes through the guide block 10 and is slidably connected to the guide block 10.

[0025] In this embodiment, as a preferred technical solution, the lower clamping assembly 9 includes an ear plate 11 fixed to the outer side of the arc-shaped clamping plate 8, a fastening bolt 12 is threadedly connected to the ear plate 11, and a clamping plate 13 is rotatably provided at the bottom of the fastening bolt 12. A slider 14 is fixed to the side of the clamping plate 13 close to the arc-shaped clamping plate 8, and a sliding groove 15 is provided on the outer side of the arc-shaped clamping plate 8 for the slider 14 to slide and limit, and an annular groove 16 is provided on the upper end face of the fixed base 1 for facilitating drilling.

[0026] The working principle of the positioning fixture for machining flange holes in an electric regulating valve is as follows: a motor 5 drives the rotation of a bidirectional screw 4. The two threaded sleeves 6 on the bidirectional screw 4, guided by the cooperation of a guide block 10 and a column 2, move symmetrically along the center of the bidirectional screw 4. The movement of the threaded sleeves 6 drives the connecting rod 7, which in turn moves the arc-shaped clamping plate 8 toward or away from the center, thereby clamping or loosening the flange. Simultaneously, the fastening bolts 12 in the lower clamping assembly 9 rotate, pushing the clamping plate 13, in cooperation with the slider 14 and the slide chute 15, to move vertically along the outer side of the arc-shaped clamping plate 8, thereby vertically compressing the flange and preventing it from jumping vertically during drilling.

[0027] The use process of the flange hole machining and positioning fixture of the utility model for an electric regulating valve is as follows:

[0028] 1. Fix the fixed base 1 to the drilling machine with bolts. Place the electric regulating valve flange to be processed on the fixed base 1, with the flange center hole sleeved outside the mounting plate 3. The two arc-shaped clamping plates 8 are initially retracted under the mounting plate 3 to avoid blocking the flange placement.

[0029] 2. Start the motor 5, which drives the bidirectional screw 4 to rotate, causing the two threaded sleeves 6 to move closer to each other. The threaded sleeves 6 drive the connecting rod 7 to move, causing the arc-shaped clamping plate 8 to extend outward and clamp the inner ring of the flange horizontally.

[0030] 3. After the flange is clamped in the horizontal direction, turn the fastening bolt 12 in the lower clamping assembly 9. The fastening bolt 12 pushes the clamping plate 13. With the cooperation of the slider 14 and the slide groove 15, the clamping plate 13 moves vertically downward along the outer side of the arc-shaped clamping plate 8, compressing the flange in the vertical direction.

[0031] 4. The drilling machine performs drilling on the flange. Since the flange is firmly fixed in both horizontal and vertical directions, it can effectively avoid deviation and runout during the drilling process, improving drilling accuracy and quality.

[0032] 5. After drilling is completed, reverse the tightening bolt 12 to loosen the flange of the clamping plate 13. Then reverse the motor 5 to loosen the flange of the arc clamping plate 8 and retract the arc clamping plate 8 under the mounting plate 3, making it easier to remove the processed flange.

[0033] The above description of the present invention and its embodiments is non-limiting. The drawings show only one embodiment of the present invention, and the actual structure is not limited thereto. In short, if a person skilled in the art is inspired by the above, and does not deviate from the purpose of the present invention, without inventive design, a structure and embodiment similar to the technical solution should fall within the scope of protection of the present invention.

Claims

1. A positioning fixture for machining flange holes in electric regulating valves, comprising a fixed base (1), the fixed base (1) being fixed to a drilling machine by bolts, and characterized in that: A mounting plate (3) is fixedly provided at the center of the upper end face of the fixed base (1) through a column (2); a bidirectional screw rod (4) is rotatably provided between the bottom face of the mounting plate (3) and the fixed base (1); a motor (5) for driving the bidirectional screw rod (4) to rotate is fixedly provided inside the fixed base (1); threaded sleeves (6) are symmetrically threadedly connected on both sides of the center of the bidirectional screw rod (4); connecting rods (7) are hingedly provided on the left and right side faces of the two threaded sleeves (6); an arc-shaped clamping plate (8) is hingedly provided between the two connecting rods (7) on the same side; a lower pressing assembly (9) is fixedly provided on the outer side face of the arc-shaped clamping plate (8).

2. The positioning fixture for machining flange holes in electric regulating valves according to claim 1, characterized in that: A guide block (10) is fixedly provided on the side of the threaded sleeve (6), and the column (2) passes through the guide block (10) and is slidably connected to the guide block (10).

3. The positioning fixture for machining flange holes in electric regulating valves according to claim 1, characterized in that: The lower clamping assembly (9) includes an ear plate (11) fixed to the outer side of the arc-shaped clamping plate (8), a fastening bolt (12) is threadedly connected to the ear plate (11), and a clamping plate (13) is rotatably provided at the bottom of the fastening bolt (12).

4. The positioning fixture for machining flange holes in electric regulating valves according to claim 3, characterized in that: A slider (14) is fixedly provided on one side of the pressing plate (13) close to the arc-shaped clamping plate (8), and a sliding groove (15) for the slider (14) to slide and limit is provided on the outer side surface of the arc-shaped clamping plate (8).

5. The positioning fixture for machining flange holes in electric regulating valves according to claim 1, characterized in that: The upper end surface of the fixed base (1) is provided with an annular groove (16) for facilitating drilling.

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