Machining clamp for flowmeter body

Abstract

The utility model discloses a machining clamp for a flowmeter body, which comprises a shell provided with a first clamping component used for fixedly clamping a measuring tube. The two sides of the first clamping assembly are each provided with a second clamping assembly used for fixedly clamping a flange and adjusting the position, in the Y-axis direction, of the fixedly-clamped flange, the shell is provided with an adjusting assembly used for adjusting the distance between the two second clamping assemblies, and the first clamping assembly is provided with a sliding rod. And a fixing plate is mounted at the bottom end of the sliding rod. According to the utility model, the welding position of the measuring tube and the flange can be in an optimal operation state, so that the welding operation of operators is facilitated, the axial displacement and circumferential deflection of the flange in the welding process can be effectively limited, and the sealing surface of the flange and the axis of the measuring tube are kept in high-precision perpendicularity; and the leakage risk and the rework rate caused by welding deviation are reduced.

Description

Technical Field

[0001] This utility model relates to the technical field of auxiliary tools for processing flow meter bodies, specifically a processing fixture for flow meter bodies. Background Technology

[0002] In the field of industrial flow metering equipment manufacturing, the flow meter body is the core component, and its processing accuracy directly affects the accuracy of measurement and the service life of the equipment. The flow meter body is usually assembled by welding a measuring tube and a flange. The measuring tube is used to carry the fluid and realize flow measurement, while the flange is connected by bolts to realize the stable assembly of the flow meter and the pipeline system.

[0003] A search revealed that patent publication number CN222521089U discloses a positioning fixture for machining the outer shell of an electromagnetic flowmeter. The fixture includes a base, with a fixed column fixedly connected to the bottom of the base. A rotating plate is rotatably connected to the top of the fixed column. Two connecting rods are rotatably connected to the top of the rotating plate. Connecting blocks are rotatably connected to the bottom of the connecting rods. A moving plate is fixedly connected to the bottom of the connecting blocks. Two connecting blocks are fixedly connected to the top of the moving plate. A receiving plate is fixedly connected to the top of every two connecting blocks. A force-applying plate is slidably connected to one side of the receiving plate. In this invention, a starting cylinder drives the receiving plate, causing the force-applying plate to move to both sides, contacting the force-applying plate to clamp the outer shell. Then, under the elastic support of a strong spring, the clamping uniformity of the outer shell is adaptively adjusted to avoid uneven clamping force that could cause deformation of the outer shell.

[0004] Existing flowmeter body machining fixtures, when used in actual applications, cannot effectively control the axial displacement and circumferential deflection of the flange during the welding process between the flange and the measuring tube. This results in excessive deviation of the perpendicularity between the flange sealing surface and the axis of the measuring tube after welding, affecting the sealing performance of subsequent assembly. Furthermore, different flowmeter models have various flange sizes and specifications, and the assembly height of the measuring tube and the flange also varies. Traditional fixtures lack flexible adjustment mechanisms and are difficult to adapt to various flange spacings and assembly heights. Frequent replacement of special fixtures is required during production, leading to low processing efficiency and a significant increase in equipment and labor costs. Therefore, a new flowmeter body machining fixture is designed. Utility Model Content

[0005] In view of the defects or deficiencies of the processing fixtures for the flow meter body, the purpose of this utility model is to provide a processing fixture for the flow meter body that not only ensures that the welding position of the measuring tube and the flange is in the optimal operating state, but also effectively limits the axial displacement and circumferential deflection of the flange during the welding process.

[0006] To achieve the above-mentioned objectives, the present invention adopts the following technical solution:

[0007] This utility model provides a processing fixture for a flow meter body, including a housing. The housing is provided with a first clamping assembly for fixing and clamping a measuring tube. On both sides of the first clamping assembly, there are second clamping assemblies for fixing and clamping flanges and adjusting the position of the fixed and clamped flanges in the Y-axis direction. The housing is provided with an adjusting assembly for adjusting the distance between the two second clamping assemblies.

[0008] The first clamping assembly is provided with a slide rod, and a fixing plate is installed at the bottom end of the slide rod. The fixing plate is fixedly connected to the top end of the housing by fastening bolts. Two fixing sleeves are provided above the outer circumferential wall of the slide rod, and a sliding sleeve is provided below the outer circumferential wall of the slide rod. An inner support clamping plate arranged in a ring array is provided on the outer side of the outer circumferential wall of the slide rod. The inner support clamping plate is connected to the fixing sleeve and the sliding sleeve through a movable connecting plate. A connecting rod is provided on the sliding sleeve. The bottom end of the connecting rod passes through the through hole on the surface of the fixing plate and the through hole on the top end of the housing in sequence and extends into the interior of the housing to connect with the lifting plate. The lifting plate is installed at the top end of the electric push rod, and the electric push rod is installed at the center of the bottom end inside the housing.

[0009] Preferably, one end of the inner support plate is movably connected to the movable connecting plate via a movable pin, and the other end of the movable connecting plate is movably connected to both the fixed sleeve and the sliding sleeve via movable pins.

[0010] Preferably, the connecting rod is threadedly connected to the sliding sleeve and the lifting plate.

[0011] Preferably, the adjustment assembly is provided with a rotating shaft, the two ends of which are respectively installed in bearings on the outer walls of the two sides of the housing. A first movable plate and a second movable plate are respectively installed on the two sides of the outer wall of the rotating shaft, and both the first movable plate and the second movable plate are located inside the housing. A slider is installed at the bottom of the first movable plate and the second movable plate. The bottom of the slider is set on a slide rail, and the slider and the slide rail are slidably connected. The slide rail is installed on both sides of the bottom of the housing.

[0012] Preferably, a second bevel gear is provided on one side of the outer circumferential wall of the rotating shaft, and the second bevel gear is located inside the housing. The second bevel gear meshes with the first bevel gear, and the first bevel gear is mounted on the output shaft of the geared motor. The geared motor is mounted on the top of the support block, and the support block is mounted on one side of the bottom end inside the housing.

[0013] Preferably, the top ends of the first movable plate and the second movable plate are provided with connecting blocks, and the other end of the connecting block passes through the strip-shaped slot and extends to the outside. The strip-shaped slot is opened on both sides of the top end of the housing, and the wall of the strip-shaped slot and the outer wall of the connecting block are in clearance fit. The other end of the connecting block on the first movable plate and the other end of the connecting block on the second movable plate are respectively mounted with a first mounting plate and a second mounting plate, and both the first mounting plate and the second mounting plate are located outside the housing.

[0014] Preferably, the end walls of the first and second movable plates are provided with threaded holes, and the two sides of the outer wall of the rotating shaft are respectively provided with left-hand threads and right-hand threads. The threaded holes on the first movable plate are threadedly connected to the left-hand threads on the outer wall of the rotating shaft, and the threaded holes on the second movable plate are threadedly connected to the right-hand threads on the outer wall of the rotating shaft.

[0015] Preferably, the second clamping assembly is composed of a cylinder and a fixed clamping plate, wherein the fixed clamping plate is mounted on the telescopic end of the cylinder, and the cylinders on the two second clamping assemblies are respectively mounted on the top of the first mounting plate and the second mounting plate.

[0016] Compared with existing technologies, one or more of the above technical solutions have the following beneficial effects:

[0017] 1. In this utility model, through a series of coordinated structural arrangements, when the operator needs to weld the flange and the measuring tube, the operator first places the measuring tube on the top of the housing, and the inner support plate on the first clamping assembly is located inside the measuring tube. The operator activates the electric push rod on the first clamping assembly and controls the electric push rod to move the inner support plate outward to fix and clamp the inner wall of the measuring tube. After the measuring tube is fixed and clamped, the operator places the flange on the outer wall of the measuring tube. The operator activates the adjusting assembly and the second clamping assembly to fix the flange between the two fixed clamping plates. Then, the operator activates the cylinder on the second clamping assembly to move the flange in the Y-axis direction. The upward movement of the flange positions it at the welding point between the measuring tube and the flange, ensuring optimal operation and facilitating welding. During welding, the flange is positioned and fixed from both sides by two second clamping components, effectively limiting axial and circumferential displacement. This ensures high-precision perpendicularity between the flange sealing surface and the measuring tube axis, reducing leakage risks and rework rates due to welding deviations. Furthermore, the stable clamping effect effectively suppresses vibration and displacement during welding, guaranteeing uniform and aesthetically pleasing weld formation, thus creating conditions for efficient and high-quality mass production.

[0018] 2. In this utility model, through a series of coordinated structural arrangements, the first clamping component can fix and clamp the inner wall of measuring tubes of different sizes and specifications. With the cooperation of the adjusting component and the second clamping component, flanges of different sizes and specifications can be fixed and clamped. The second clamping component has a horizontal height adjustment function, which can flexibly adjust the installation position of the flange on the outer wall of the measuring tube according to the design requirements of different models of flow meters, and adapt to the assembly height requirements of various specifications. Thus, this equipment can achieve compatible clamping of flow meter bodies of various specifications, reduce the number of special clamps used, reduce equipment procurement and maintenance costs, and significantly improve production efficiency and processing flexibility. Attached Figure Description

[0019] The accompanying drawings, which form part of this specification, are used to provide a further understanding of this utility model. The illustrative embodiments of this utility model and their descriptions are used to explain this utility model and do not constitute an improper limitation of this utility model.

[0020] Figure 1 This is a schematic diagram of the overall three-dimensional structure of this utility model. Figure 1 .

[0021] Figure 2 This is a schematic diagram of the overall three-dimensional structure of this utility model. Figure 2 .

[0022] Figure 3 This is a cross-sectional view of the present invention.

[0023] Figure 4 This is a schematic diagram of the structure of the first clamping component of this utility model.

[0024] Figure 5 This is a schematic diagram of the structure of the adjustment component of this utility model.

[0025] Figure 6 This is a schematic diagram of the structure of the second clamping component of this utility model.

[0026] In the picture:

[0027] 100. First clamping assembly; 110. Fixed sleeve; 120. Movable connecting plate; 130. Inner support clamping plate; 140. Slide rod; 150. Sliding sleeve; 160. Connecting rod; 170. Fixed plate; 180. Lifting plate; 190. Electric push rod;

[0028] 200. Second clamping assembly; 210. Cylinder; 220. Fixing clamp;

[0029] 300. Adjustment component; 310. Gear motor; 311. First bevel gear; 320. Rotating shaft; 321. Second bevel gear; 330. First moving plate; 340. Second moving plate; 350. Connecting block; 360. First mounting plate; 370. Second mounting plate; 380. Slider; 390. Slide rail;

[0030] 400, housing; 410, strip-shaped slot. Detailed Implementation

[0031] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0032] It should be noted that the following detailed description is exemplary and intended to provide further explanation of the present invention. Unless otherwise specified, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention pertains.

[0033] It should be noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to limit the scope of exemplary embodiments according to the invention. As used herein, the singular form is intended to include the plural form as well, unless the context clearly indicates otherwise. Furthermore, it should be understood that when the terms "comprising" and / or "including" are used in this specification, they indicate the presence of features, steps, operations, devices, components, and / or combinations thereof.

[0034] like Figure 1-6 As shown, a processing fixture for a flow meter body includes a housing 400. A first clamping assembly 100 for fixing and clamping a measuring tube is provided on the housing 400. Second clamping assemblies 200 are provided on both sides of the first clamping assembly 100 for fixing and clamping a flange and adjusting the position of the fixed and clamped flange in the Y-axis direction. An adjusting assembly 300 is provided on the housing 400 for adjusting the distance between the two second clamping assemblies 200.

[0035] The first clamping assembly 100 is provided with a slide rod 140, and a fixing plate 170 is installed at the bottom end of the slide rod 140. The fixing plate 170 is fixedly connected to the top end of the housing 400 by fastening bolts. Two fixing sleeves 110 are provided above the outer circumferential wall of the slide rod 140, and a sliding sleeve 150 is provided below the outer circumferential wall of the slide rod 140. An inner support clamping plate 130 arranged in a ring array is provided on the outer side of the outer circumferential wall of the slide rod 140. The inner support clamping plate 130 is connected to the fixing sleeve 110 and the sliding sleeve 150 through a movable connecting plate 120. A connecting rod 160 is provided on the sliding sleeve 150, and the bottom end of the connecting rod 160 passes through the fixing plate 110 in sequence. The through holes on the surface of 70 and the through holes on the top of the housing 400 extend into the interior of the housing 400 and connect with the lifting plate 180. The lifting plate 180 is installed at the top of the electric push rod 190, which is installed at the center of the bottom of the interior of the housing 400. When the electric push rod 190 is started, it will drive the lifting plate 180 to move in the Y-axis direction. When the lifting plate 180 moves in the Y-axis direction, it will drive the sliding sleeve 150 to move in the Y-axis direction through the connecting rod 160. When the sliding sleeve 150 moves in the Y-axis direction, it will cause the inner support plate 130 to move outward or inward through the movable connecting plate 120.

[0036] The inner support plate 130 is movably connected to one end of the movable connecting plate 120 via a movable pin, and the other end of the movable connecting plate 120 is movably connected to the fixed sleeve 110 and the sliding sleeve 150 via movable pins.

[0037] The connecting rod 160 is threadedly connected to the sliding sleeve 150 and the lifting plate 180.

[0038] The adjusting assembly 300 is provided with a rotating shaft 320. The two ends of the rotating shaft 320 are respectively installed in bearings on the outer walls of the two sides of the housing 400. A first moving plate 330 and a second moving plate 340 are respectively installed on the two sides of the outer wall of the rotating shaft 320. The first moving plate 330 and the second moving plate 340 are both located inside the housing 400. A slider 380 is installed at the bottom of the first moving plate 330 and the second moving plate 340. The bottom of the slider 380 is set on the slide rail 390, and the slider 380 and the slide rail 390 are slidably connected. The slide rail 390 is installed on both sides of the bottom inside the housing 400. The arrangement of the slider 380 and the slide rail 390 can limit and guide the movement of the first moving plate 330 and the second moving plate 340.

[0039] A second bevel gear 321 is provided on one side of the outer wall of the rotating shaft 320, and the second bevel gear 321 is located inside the housing 400. The second bevel gear 321 is meshed with the first bevel gear 311, and the first bevel gear 311 is mounted on the output shaft of the reduction motor 310. The reduction motor 310 is mounted on the top of the support block, and the support block is mounted on one side of the bottom end inside the housing 400.

[0040] The top ends of the first movable plate 330 and the second movable plate 340 are each provided with a connecting block 350, and the other end of the connecting block 350 passes through the strip-shaped slot 410 and extends to the outside. The strip-shaped slot 410 is opened on both sides of the top end of the housing 400, and the hole wall of the strip-shaped slot 410 and the outer wall of the connecting block 350 are clearance fit. The other end of the connecting block 350 on the first movable plate 330 and the other end of the connecting block 350 on the second movable plate 340 are respectively mounted with a first mounting plate 360 ​​and a second mounting plate 370, and the first mounting plate 360 ​​and the second mounting plate 370 are both located outside the housing 400.

[0041] Both the first movable plate 330 and the second movable plate 340 have threaded holes on their end walls. The outer walls of the rotating shaft 320 have left-hand threads and right-hand threads on both sides. The threaded holes on the first movable plate 330 and the left-hand threads on the outer wall of the rotating shaft 320 are threadedly connected, and the threaded holes on the second movable plate 340 and the right-hand threads on the outer wall of the rotating shaft 320 are threadedly connected. When the reduction motor 310 starts, it drives the first bevel gear 311 to rotate forward or backward. When the first bevel gear 311 rotates forward or backward, it drives the second bevel gear 321 to rotate forward or backward. When the second bevel gear 321 rotates forward or backward, it drives... When the rotating shaft 320 rotates forward or backward, the threaded hole on the first moving plate 330 is threadedly connected to the left-hand thread on the outer wall of the rotating shaft 320, and the threaded hole on the second moving plate 340 is threadedly connected to the right-hand thread on the outer wall of the rotating shaft 320. Therefore, when the rotating shaft 320 rotates forward or backward, the first moving plate 330 and the second moving plate 340 will move linearly on the outer wall of the rotating shaft 320, and the first moving plate 330 and the second moving plate 340 will move in opposite directions. The first moving plate 330 and the second moving plate 340 move in opposite directions, thereby adjusting the distance between the two second clamping components 200.

[0042] The second clamping assembly 200 is composed of a cylinder 210 and a fixed clamping plate 220. The fixed clamping plate 220 is installed on the telescopic end of the cylinder 210. The cylinders 210 on the two second clamping assemblies 200 are respectively installed on the top of the first mounting plate 360 ​​and the second mounting plate 370. When the cylinder 210 is started, it will drive the fixed clamping plate 220 to move in the Y-axis direction. The movement of the fixed clamping plate 220 in the Y-axis direction can adjust the position of the fixed clamping plate 220 in the horizontal height.

[0043] Working principle: When in use, connect the external power supply. When the operator needs to weld between the flange and the measuring tube, first place the measuring tube at the top of the housing 400, with the inner support plate 130 on the first clamping assembly 100 located inside the measuring tube. The operator then activates the electric push rod 190. The extension and retraction of the electric push rod 190 indirectly drives the sliding sleeve 150 to move on the outer wall of the slide rod 140. The movement of the sliding sleeve 150 on the outer wall of the slide rod 140 causes the inner support plate 130 to move outwards or inwards. The operator controls the electric push rod... Rod 190 causes the inner support clamp 130 to move outward to fix and clamp the inner wall of the measuring tube. After the measuring tube is fixed and clamped, the operator places the flange on the outer wall of the measuring tube. The operator then activates the adjusting component 300 and the second clamping component 200 to fix the flange between the two fixed clamping plates 220. The operator then activates the cylinder 210 on the second clamping component 200 to move the flange in the Y-axis direction, moving it to the welding position between the measuring tube and the flange. This allows the equipment to achieve the optimal welding position between the measuring tube and the flange. The first clamping component 100 can clamp the inner wall of measuring tubes of different sizes. With the cooperation of the adjusting component 300 and the second clamping component 200, it can clamp flanges of different sizes. The second clamping component 200 has a horizontal height adjustment function, which can flexibly adjust the installation position of the flange on the outer wall of the measuring tube according to the design requirements of different flow meter models, and adapt to the assembly height requirements of various specifications. Thus, this equipment can clamp multiple specifications of flow meter bodies, reduce the number of special fixtures used, reduce equipment procurement and maintenance costs, and significantly improve production efficiency and processing flexibility.

[0044] The above description is merely a preferred embodiment of this utility model and is not intended to limit the invention. For those skilled in the art, various modifications and variations can be made to this invention. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this invention should be included within the protection scope of this invention.

Claims

1. A machining fixture for a flow meter body, comprising a housing (400), characterized in that: The housing (400) is provided with a first clamping assembly (100) for fixing and clamping the measuring tube. On both sides of the first clamping assembly (100), there are second clamping assemblies (200) for fixing and clamping the flange and adjusting the position of the fixed and clamped flange in the Y-axis direction. The housing (400) is provided with an adjusting assembly (300) for adjusting the distance between the two second clamping assemblies (200). The first clamping assembly (100) is provided with a slide rod (140), and a fixing plate (170) is installed at the bottom end of the slide rod (140). The fixing plate (170) is fixedly connected to the top end of the housing (400) by fastening bolts. Two fixing sleeves (110) are provided above the circumferential outer wall of the slide rod (140), and a sliding sleeve (150) is provided below the circumferential outer wall of the slide rod (140). An inner support clamping plate (130) arranged in a ring array is provided on the outer side of the circumferential outer wall of the slide rod (140). The movable connecting plate (120) is connected to the fixed sleeve (110) and the sliding sleeve (150). The sliding sleeve (150) is provided with a connecting rod (160). The bottom end of the connecting rod (160) passes through the through hole on the surface of the fixed plate (170) and the through hole on the top of the housing (400) and extends into the interior of the housing (400) to connect with the lifting plate (180). The lifting plate (180) is installed at the top of the electric push rod (190). The electric push rod (190) is installed at the center of the bottom end inside the housing (400).

2. The machining fixture for the flow meter body according to claim 1, characterized in that: The inner support plate (130) is movably connected to one end of the movable connecting plate (120) by a movable pin, and the other end of the movable connecting plate (120) is movably connected to the fixed sleeve (110) and the sliding sleeve (150) by a movable pin.

3. The machining fixture for the flow meter body according to claim 1, characterized in that: The connecting rod (160) is threadedly connected to the sliding sleeve (150) and the lifting plate (180).

4. The machining fixture for the flow meter body according to claim 1, characterized in that: The adjustment assembly (300) is provided with a rotating shaft (320). The two ends of the rotating shaft (320) are respectively installed in bearings on the outer walls of the housing (400). A first moving plate (330) and a second moving plate (340) are respectively installed on the two sides of the outer wall of the rotating shaft (320). The first moving plate (330) and the second moving plate (340) are both located inside the housing (400). A slider (380) is installed at the bottom of the first moving plate (330) and the second moving plate (340). The bottom of the slider (380) is set on the slide rail (390), and the slider (380) and the slide rail (390) are slidably connected. The slide rail (390) is installed on both sides of the bottom inside the housing (400).

5. The machining fixture for the flow meter body according to claim 4, characterized in that: A second bevel gear (321) is provided on one side of the outer circumferential wall of the rotating shaft (320), and the second bevel gear (321) is located inside the housing (400). The second bevel gear (321) meshes with the first bevel gear (311), and the first bevel gear (311) is mounted on the output shaft of the geared motor (310). The geared motor (310) is mounted on the top of the support block, and the support block is mounted on one side of the bottom end inside the housing (400).

6. The machining fixture for the flow meter body according to claim 5, characterized in that: The top ends of the first movable plate (330) and the second movable plate (340) are provided with connecting blocks (350), and the other end of the connecting block (350) passes through the strip-shaped slot (410) and extends to the outside. The strip-shaped slot (410) is opened on both sides of the top end of the housing (400), and the hole wall of the strip-shaped slot (410) and the outer wall of the connecting block (350) are in clearance fit. The other end of the connecting block (350) on the first movable plate (330) and the other end of the connecting block (350) on the second movable plate (340) are respectively equipped with a first mounting plate (360) and a second mounting plate (370), and the first mounting plate (360) and the second mounting plate (370) are both located outside the housing (400).

7. The machining fixture for the flow meter body according to claim 6, characterized in that: The end walls of the first moving plate (330) and the second moving plate (340) are provided with threaded holes. The two sides of the outer wall of the rotating shaft (320) are respectively provided with left-hand threads and right-hand threads. The threaded holes on the first moving plate (330) and the left-hand threads on the outer wall of the rotating shaft (320) are connected by threaded engagement. The threaded holes on the second moving plate (340) and the right-hand threads on the outer wall of the rotating shaft (320) are connected by threaded engagement.

8. The machining fixture for the flow meter body according to claim 1, characterized in that: The second clamping assembly (200) is composed of a cylinder (210) and a fixed clamping plate (220). The fixed clamping plate (220) is installed on the telescopic end of the cylinder (210). The cylinders (210) on the two second clamping assemblies (200) are respectively installed on the top of the first mounting plate (360) and the second mounting plate (370).

Images