A valve machining clamping device

Abstract

The application relates to a valve machining clamping device which comprises a base and a clamping mechanism arranged above the base, the clamping mechanism comprises first clamping pieces movably connected to the base and a driving screw for driving the first clamping pieces to move, the first clamping pieces are oppositely arranged on the base, the first clamping pieces are provided with clamping openings matched with valve flange side walls, the lower parts of the first clamping pieces are arranged below the base, a supporting plate is fixedly extended on the base, the two ends of the driving screw are connected to the supporting plate and can rotate, opposite first clamping pieces are provided with reverse threads, the driving screw is driven by a first motor and is threadedly connected to the lower parts of the opposite first clamping pieces. The application controls the synchronous movement of the opposite first clamping pieces by the driving screw, the lower parts of the first clamping pieces are arranged below the base, the clamping openings can stably clamp the valve flanges arranged on the base, so that the valve can be stably clamped during valve machining to avoid displacement of the valve.

Description

Technical Field

[0001] This application relates to the technical field of valve processing, and in particular to a valve processing clamping device. Background Technology

[0002] Valves are pipeline accessories used to open and close pipelines, control flow direction, and regulate and control the parameters of the conveyed medium. When machining valves, clamping devices are needed to position the valves to ensure that the center axis of the valve port does not easily deviate from the center axis of the machining tool.

[0003] Traditional positioning fixtures typically use clamps such as three-jaw chucks to hold flanges on valves. However, even after the flange is held by the three-jaw chuck, it can still move along its own axis, affecting the precise machining of the valve. Therefore, improvements are still needed. Utility Model Content

[0004] In order to stably clamp the valve during valve processing and prevent valve displacement, this application provides a valve processing clamping device.

[0005] The valve processing clamping device provided in this application adopts the following technical solution:

[0006] A valve processing clamping device includes a base and a clamping mechanism disposed above the base. The clamping mechanism includes a first clamping member movably connected to the base and a drive screw for driving the first clamping member to move. The first clamping members are disposed opposite each other on the base, and the first clamping members have clamping openings that mate with the sidewall of the valve flange. The lower part of the first clamping member passes through the lower part of the base. A support plate extends and is fixed on the base. The two ends of the drive screw are connected to the support plate and are rotatable. The opposing first clamping members are provided with reverse threads. The drive screw is driven by a first motor and is threadedly connected to the lower part of the opposing first clamping members respectively.

[0007] By adopting the above technical solution, the first clamping member is controlled to move synchronously by the drive screw. The lower part of the first clamping member passes through the base, so that the clamping port can stably clamp the valve flange located on the base, thereby stably clamping the valve during valve processing and preventing valve displacement.

[0008] Preferably, the clamping mechanism further includes a control screw and a second clamping member with the same structure as the first clamping member. The second clamping members are arranged opposite each other, and the line connecting the opposite second clamping members is perpendicular to the line connecting the opposite first clamping members. The support plates are arranged opposite each other on the base, and the downward extension length of one opposite support plate is greater than that of the other opposite support plate. The two ends of the control screw are connected to the corresponding two support plates and can rotate. The opposite second clamping members are provided with reverse threads. The control screw is driven by a second motor and is threadedly connected to the lower part of the opposite second clamping members respectively.

[0009] By adopting the above technical solution, the second clamping member cooperates with the first clamping member to further stabilize the valve flange and prevent valve displacement during valve processing. The downward extension length of one opposite support plate is greater than that of the other opposite support plate, so that the drive screw and control screw are misaligned vertically and do not interfere with each other. At the same time, this arrangement also allows the clamping operations of the first and second clamping members to be controlled separately. On the one hand, it is convenient to adapt to the processing of non-standard valve parts, and on the other hand, in ordinary processing where the positioning requirements are not high, only one set can be selected for clamping and fixing, avoiding the waste of power resources.

[0010] Preferably, both the first clamping member and the second clamping member are provided with a fine-tuning structure.

[0011] Preferably, the fine-tuning structure includes an abutment rod and a control rod movably connected within the first clamping member and the second clamping member. The abutment rod is L-shaped and abuts and is positioned against the valve flange surface. The control rod is fixed to the abutment rod and passes through the first clamping member and the second clamping member. A fixing plate extends from the control rod and abuts against the top of the first clamping member and the second clamping member. The fixing plate is fixed by fixing bolts.

[0012] By adopting the above technical solution, the L-shaped abutment rod can better fit the upper end wall and side wall of the valve flange, the control rod that passes through the outside is more convenient to drive the movement of the abutment rod, and the fixing bolts are used to conveniently position the fixing plate in the adjustment position, making it easier for operators to manually fine-tune the positioning of the valve flange.

[0013] Preferably, the bottom plane of the clamping port is flush with the upper surface of the base, and the base is provided with guide grooves to guide the sliding of the first clamping member and the second clamping member.

[0014] By adopting the above technical solution, the guide groove guides the sliding of the first clamping member and the second clamping member on the one hand, and provides clearance space for the clamping ports of the first clamping member and the second clamping member to stably clamp the valve flange on the other hand.

[0015] Preferably, the two end sidewalls of the drive screw are respectively fixed with a first ring rotatably connected to the corresponding support plate.

[0016] Preferably, the control screw has a second ring fixed to each of its two end sidewalls and rotatably connected to the corresponding support plate.

[0017] In summary, this application includes at least one of the following beneficial technical effects:

[0018] The first clamping member is controlled to move synchronously by the drive screw. The lower part of the first clamping member passes through the bottom of the base, so that the clamping port can stably clamp the valve flange located on the base, thereby stably clamping the valve during valve processing and preventing valve displacement.

[0019] The second clamping element works in conjunction with the first clamping element to further stabilize and position the valve flange, ensuring stable clamping and preventing valve displacement during valve processing. One opposing support plate extends downwards in a greater length than the other, causing the drive screw and control screw to be misaligned vertically without interference. This design also allows for separate control of the clamping operations of the first and second clamping elements. This facilitates the processing of non-standard valve parts and allows for the use of only one set for clamping and fixing in general machining processes where positioning requirements are not high, thus avoiding waste of power resources.

[0020] The L-shaped abutment rod fits better against the upper and side walls of the valve flange. The externally mounted control rod makes it easier to drive the movement of the abutment rod. The fixing bolts facilitate the positioning of the fixing plate in the adjustment position, making it easier for operators to manually fine-tune the positioning of the valve flange. Attached Figure Description

[0021] Figure 1 This is a structural schematic diagram of an embodiment of this application;

[0022] Figure 2 This is a schematic diagram of the structure of the first clamping member and the second clamping member in the embodiment of this application.

[0023] Figure 3 This is a partially exploded structural diagram of the support plate and drive screw in an embodiment of this application.

[0024] Explanation of reference numerals in the attached drawings: 1. Base; 11. Guide groove; 12. Support plate; 2. Clamping mechanism; 21. First clamping element; 211. Sliding block; 22. Second clamping element; 221. Sliding block; 23. Drive screw; 231. First ring; 24. Control screw; 3. Clamping port; 4. First motor; 5. Second motor; 6. Fine-tuning structure; 61. Abutment rod; 62. Control rod; 7. Fixing plate; 8. Fixing bolt. Detailed Implementation

[0025] The present application will be further described in detail below with reference to the accompanying drawings.

[0026] This application discloses a valve processing clamping device, referring to... Figure 1The device includes a base 1 and a clamping mechanism 2 disposed above the base 1. The clamping mechanism 2 includes a first clamping member 21 and a second clamping member 22 with the same structure. The first clamping member 21 and the second clamping member 22 are respectively disposed opposite to each other on the base 1, and the line connecting the opposite second clamping members 22 is perpendicular to the line connecting the opposite first clamping members 21.

[0027] Reference Figure 1 , 2 Taking the first clamping member 21 as an example, the side wall of the first clamping member 21 is provided with a clamping port 3 that cooperates with the side wall of the valve flange. The lower part of the first clamping member 21 passes through the base 1, so that the clamping port 3 can stably clamp the valve flange located on the base 1, thereby stably clamping the valve during valve processing and preventing valve displacement.

[0028] Reference Figure 1 , 2 The bottom plane of the clamping port 3 is flush with the upper surface of the base 1. The base 1 is provided with guide grooves 11 for guiding the sliding of the first clamping member 21 and the second clamping member 22. The guide grooves 11 guide the sliding of the first clamping member 21 and the second clamping member 22 on the one hand, and provide clearance space for the clamping port 3 of the first clamping member 21 and the second clamping member 22 to stably clamp the valve flange on the other hand.

[0029] Reference Figure 1 , 3 The clamping mechanism 2 also includes a drive screw 23 for moving the first clamping member 21 and a control screw 24 for moving the second clamping member 22. The bottom of the first clamping member 21 is provided with a sliding block 211 sleeved on the drive screw 23. The drive screw 23 is driven by the first motor 4 and has reverse threads at both ends. The sliding blocks 211 are respectively provided at both ends of the drive screw 23 and the sliding blocks 211 are engaged with the corresponding threads on the drive screw 23. When the drive screw 23 rotates in the forward direction, the sliding blocks 211 move towards each other.

[0030] Reference Figure 1 The bottom of the second clamping member 22 is provided with a sliding block 221 sleeved on the control screw 24. The control screw 24 is driven by the second motor 5 and has reverse threads at both ends. The corresponding sliding blocks 221 are respectively provided at both ends of the control screw 24, and the sliding blocks 221 are engaged with the corresponding threads on the control screw 24. When the control screw 24 rotates in the forward direction, the corresponding sliding blocks 221 move towards each other.

[0031] Reference Figure 1 , 3A support plate 12 extends and is fixed on the base 1, with the support plates 12 arranged in pairs opposite each other on the base 1, corresponding to the drive screw 23 and the control screw 24 respectively. The two ends of the drive screw 23 and the control screw 24 are respectively connected to the corresponding support plates 12 and can rotate. The downward extension length of the support plate 12 corresponding to the control screw 24 is greater than that of the support plate 12 corresponding to the drive screw 23, that is, the drive screw 23 is located above the control screw 24. Thus, through the staggered arrangement, the rotation of the drive screw 23 and the control screw 24 does not interfere with each other. At the same time, this arrangement also allows the clamping operation of the first clamping member 21 and the second clamping member 22 to be controlled separately. On the one hand, it is convenient to adapt to the processing of non-standard valve parts, etc. On the other hand, in ordinary processing where the positioning requirements are not high, only one set can be selected for clamping and fixing, avoiding the waste of power resources.

[0032] Reference Figure 1 , 3 The drive screw 23 has a first ring 231 fixed to each of its two end sidewalls and rotatably connected to the corresponding support plate 12; the control screw 24 has a second ring with the same structure as the first ring 231 fixed to each of its two end sidewalls and rotatably connected to the corresponding support plate 12. By setting the first ring 231 and the second ring, the drive screw 23 and the control screw 24 can rotate on their own axis on the corresponding support plate 12 and restrict horizontal displacement.

[0033] Reference Figure 1 , 2 Both the first clamping member 21 and the second clamping member 22 are provided with a fine adjustment structure 6. The fine adjustment structure 6 includes an abutment rod 61 and a control rod 62 movably connected in the first clamping member 21 and the second clamping member 22. The abutment rod 61 is L-shaped and abuts and is positioned on the surface of the valve flange. The control rod 62 is fixed on the abutment rod 61 and passes through the first clamping member 21 and the second clamping member 22. A fixing plate 7 is formed on the control rod 62 and abuts against the fixing plate 7 above the first clamping member 21 and the second clamping member 22. The fixing plate 7 is fixed by fixing bolts 8.

[0034] The above are all preferred embodiments of this application, and are not intended to limit the scope of protection of this application. Therefore, all equivalent changes made in accordance with the structure, shape and principle of this application should be covered within the scope of protection of this application.

Claims

1. A valve processing clamping device, characterized in that: The device includes a base (1) and a clamping mechanism (2) disposed above the base (1). The clamping mechanism (2) includes a first clamping member (21) movably connected to the base (1) and a drive screw (23) for driving the first clamping member (21) to move. The first clamping member (21) is disposed opposite to the base (1) and has a clamping port (3) that cooperates with the side wall of the valve flange. The lower part of the first clamping member (21) passes under the base (1). A support plate (12) extends and is fixed on the base (1). The two ends of the drive screw (23) are connected to the support plate (12) and can rotate. The opposite first clamping members (21) are provided with reverse threads. The drive screw (23) is driven by a first motor (4) and is threadedly connected to the lower part of the opposite first clamping members (21).

2. The valve processing clamping device according to claim 1, characterized in that: The clamping mechanism (2) further includes a control screw (24) and a second clamping member (22) with the same structure as the first clamping member (21). The second clamping members (22) are arranged opposite each other and the line connecting the opposite second clamping members (22) is perpendicular to the line connecting the opposite first clamping members (21). The support plates (12) are arranged opposite each other on the base (1), and the downward extension length of one opposite support plate (12) is greater than that of the other opposite support plate (12). The two ends of the control screw (24) are connected to the corresponding two support plates (12) and can rotate. The opposite second clamping members (22) are provided with reverse threads. The control screw (24) is driven by the second motor (5) and is threadedly connected to the lower part of the opposite second clamping members (22).

3. The valve processing clamping device according to claim 2, characterized in that: Both the first clamping member (21) and the second clamping member (22) are provided with a fine-tuning structure (6).

4. The valve processing clamping device according to claim 3, characterized in that: The fine-tuning structure (6) includes an abutment rod (61) and a control rod (62) movably connected within the first clamping member (21) and the second clamping member (22). The abutment rod (61) is L-shaped and abuts and is positioned on the surface of the valve flange. The control rod (62) is fixed on the abutment rod (61) and passes through the first clamping member (21) and the second clamping member (22). A fixing plate (7) extends from the control rod (62) and abuts above the first clamping member (21) and the second clamping member (22). The fixing plate (7) is fixed by fixing bolts (8).

5. A valve processing clamping device according to claim 2, characterized in that: The bottom plane of the clamping port (3) is flush with the upper surface of the base (1), and the base (1) is provided with guide grooves (11) for guiding the sliding of the first clamping member (21) and the second clamping member (22).

6. The valve processing clamping device according to claim 1, characterized in that: The two end sidewalls of the drive screw (23) are respectively fixed with a first ring (231) rotatably connected to the corresponding support plate (12).

7. A valve processing clamping device according to claim 2, characterized in that: The control screw (24) has a second ring fixed to each of its two end sidewalls, which is rotatably connected to the corresponding support plate (12).

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