Machining tool for large impact type branch pipe

Abstract

The utility model discloses a large-scale impact type branch pipe processing tool which comprises a pressing tool set and a supporting tool set, the pressing tool set comprises a pressing plate welded on a workpiece and a first pressing assembly detachably fixed on a rotating table, and the first pressing assembly is in contact with the pressing plate; the supporting tool set comprises a main pipe supporting base and a branch pipe supporting base which are detachably fixed to the rotating table. Based on technological characteristics of branch pipe machining and size parameters of the platform, safe and reliable clamping and fixing of the branch pipe on the rotary table can be met.

Description

TECHNICAL FIELD

[0001] The utility model relates to a machining tool for large impact type bifurcated pipe belongs to machining tool technical field. BACKGROUND

[0002] The bifurcated pipe is an important component of the water turbine, plays a role in distributing water flow on the hydraulic structure, guides the water flow to enter the straight flow nozzle uniformly, makes the water bucket of the runner balanced in stress, and makes the unit stable in operation. The bifurcated pipe has a complex structure and is usually composed of multiple branch pipes, which intersect at a specific angle in space to form a structure similar to a "Y" shape.

[0003] The large bifurcated pipe is large in size, heavy in weight and a large thin-walled part. Since the wall thickness is relatively thin, the rigidity is poor during machining, deformation is easy to occur, and the precision and service life of the bifurcated pipe are affected. Under the condition that the layout space of the back loading workbench is limited, how to realize the clamping and fixing of the bifurcated pipe becomes a technical problem. UTILITY MODEL CONTENTS

[0004] The utility model aims at: in view of the above-mentioned problem, based on the process characteristics and the size parameters of the platform of bifurcated pipe processing, provide a kind of machining tool for large impact type bifurcated pipe, can satisfy the safe, reliable clamping and fixing of bifurcated pipe in rotary table.

[0005] The technical scheme adopted by the utility model is as follows:

[0006] A machining tool for large impact type bifurcated pipe, comprising a lower pressing tool group and a supporting tool group, the lower pressing tool group comprises a pressing plate welded on the workpiece and a first lower pressing assembly detachably fixed on the rotary workbench, the first lower pressing assembly is in contact with the pressing plate, and the supporting tool group comprises a main pipe support seat and a branch pipe support seat detachably fixed on the rotary workbench.

[0007] Alternatively, the first lower pressing assembly comprises a first T-shaped screw rod clamped in the rotary workbench, a first pressing block is arranged on the first T-shaped screw rod, one end of the first pressing block is in contact with the pressing plate, and a supporting column is arranged between the other end of the first pressing block and the rotary workbench; a first nut is arranged above the first pressing block and is screwed on the first T-shaped screw rod.

[0008] Alternatively, the main pipe support seat and the branch pipe support seat are fixed on the rotary workbench by a plurality of second lower pressing assemblies, and the plurality of second lower pressing assemblies are assembled on the outer periphery of the main pipe support seat and the branch pipe support seat.

[0009] Alternatively, the second lower pressing assembly comprises a second T-shaped screw rod clamped in the rotary workbench, a second pressing block is arranged on the second T-shaped screw rod, the bottom of one end of the second pressing block is in contact with the main pipe support seat or the branch pipe support seat, and a supporting block is arranged between the bottom of the other end of the second pressing block and the rotary workbench; a second nut is arranged above the second pressing block and is screwed on the second T-shaped screw rod.

[0010] Alternatively, the main pipe support seat comprises two main pipe support seats, and the two main pipe support seats are arranged at the two ends of the main pipe of the workpiece.

[0011] Alternatively, the main pipe support seat or the branch pipe support seat comprises a bottom plate, two parallel support plates are arranged on the bottom plate, the top of the support plate is arc-shaped or V-shaped, and a rib plate is connected between the two support plates.

[0012] Alternatively, a first weight-reducing hole is arranged in the middle of the bottom plate.

[0013] Alternatively, a second weight-reducing hole is arranged in the middle of the rib plate.

[0014] Alternatively, the top of the support plate is arc-shaped, and the middle of the arc has a U-shaped groove.

[0015] Alternatively, the top of the support plate is arc-shaped, and the radius of the arc is the same as the radius of the corresponding position of the workpiece.

[0016] In summary, due to the adoption of the above technical scheme, the beneficial effects of the present application are:

[0017] The machining tool for large-scale impact type branch pipes provided by the present application has the detachability of the lower pressing assembly and the support seat, so that the tool can quickly adapt to branch pipes of different sizes and shapes, improving the versatility and flexibility of the tool. Through the cooperation of the lower pressing assembly and the support seat, the stability of the branch pipe during the machining process can be effectively improved, and the machining errors caused by vibration or displacement can be reduced. The design of the tool considers the operation safety, and through reliable fixation and support, the safety risk in the machining process is reduced. BRIEF DESCRIPTION OF DRAWINGS

[0018] Figure 1 is a structure schematic diagram when the present application is used.

[0019] Figure 2 is Figure 1 the enlarged view of A of

[0020] Figure 3 is a structure schematic diagram of the present application.

[0021] Figure 4 is Figure 3 the enlarged view of B of

[0022] Figure 5 is Figure 3 a close-up view of C of

[0023] Figure 6 is Figure 3 a close-up view of D of

[0024] In the figure, the labels are: 1 - lower pressing tool group, 11 - pressing plate, 12 - first lower pressing assembly, 121 - first T-shaped screw rod, 122 - first pressing block, 123 - support column, 124 - first nut, 2 - support tool group, 21 - main pipe support seat, 22 - branch pipe support seat, 23 - second lower pressing assembly, 231 - second T-shaped screw rod, 232 - second pressing block, 233 - support block, 234 - second nut, 24 - bottom plate, 241 - first lightening hole, 25 - support plate, 251 - U-shaped groove, 26 - rib plate, 261 - second lightening hole, 3 - workpiece, 4 - rotary worktable. DETAILED DESCRIPTION

[0025] The utility model will be described in detail below with reference to the drawings.

[0026] In order to make the utility model's purpose, technical scheme and advantage more clear and obvious, the following combines the drawing and example, and this utility model is further described in detail. It should be understood that the specific examples described here are only used to explain the utility model, and are not used to limit the utility model.

[0027] A large-scale impact type branch pipe machining tool, as shown in Figures 1-6 The lower pressing tool group 1 includes a pressing plate 11 welded on the workpiece 3 and a first lower pressing assembly 12 detachably fixed on the rotary worktable 4, and the first lower pressing assembly 12 is in contact with the pressing plate 11; the support tool group 2 includes a main pipe support seat 21 and a branch pipe support seat 22 detachably fixed on the rotary worktable 4.

[0028] The pressing plate 11 is a component welded on the branch pipe workpiece 3, which serves to provide a uniform pressure distribution surface so that the first lower pressing assembly 12 can effectively fix the branch pipe to prevent vibration or displacement during processing. The first lower pressing assembly 12 fixed on the rotary worktable 4 exerts pressure on the branch pipe by contacting the pressing plate 11, and is designed with adjustable structure so that it can be adjusted according to the shape and size of the branch pipe, ensuring uniform distribution of pressing force. The detachable design facilitates adjustment and replacement according to different workpiece 3 sizes and processing needs. The main pipe support seat 21 is fixed on the rotary worktable 4 for supporting the main stem part of the branch pipe. Its design takes into account the diameter and wall thickness of the branch pipe to ensure the stability and uniformity of the support. The branch pipe support seat 22 is used to support the branch part of the branch pipe. The detachable design enables the branch pipe support seat 22 to be designed and positioned according to the specific branch position and angle.

[0029] As another specific embodiment, the first lower pressing assembly 12 includes a first T-shaped screw 121 with its head clamped in the rotary worktable 4, a first pressing block 122 provided on the first T-shaped screw 121, one end of the bottom of the first pressing block 122 in contact with the pressing plate 11, and a support column 123 provided between the other end of the bottom of the first pressing block 122 and the rotary worktable 4; a first nut 124 is provided above the first pressing block 122, and the first nut 124 is screwed onto the first T-shaped screw 121. The head of the first T-shaped screw 121 is designed to be clamped into the T-shaped groove of the rotary worktable 4, thereby being fixed on the rotary worktable 4. By rotating the nut, the position of the pressing block can be adjusted to achieve precise control of the pressure on the branch pipe. The screwing action of the first nut 124 allows the operator to adjust the amount of pressure applied according to the actual position of the branch pipe and the processing needs, achieving precise fixation. The presence of the support column 123 ensures the stability of the first pressing block 122 and the first T-shaped screw 121 during the entire processing process, reducing displacement due to vibration or processing force. The design of the entire lower pressing assembly facilitates quick installation and adjustment for the operator, improving processing efficiency.

[0030] As another specific embodiment, the main pipe support seat 21 and the branch pipe support seat 22 are respectively fixed on the rotary worktable 4 by a plurality of second lower pressing assemblies 23, and the plurality of second lower pressing assemblies 23 are assembled on the outer periphery of the main pipe support seat 21 and the branch pipe support seat 22. The plurality of second lower pressing assemblies 23 assembled on the outer periphery of the main pipe support seat 21 and the branch pipe support seat 22 can be evenly distributed around the support seat, providing balanced support force to prevent the support seat from shifting during processing, ensuring the stability of the branch pipe during the entire processing process.

[0031] As another specific embodiment, the second lower pressing assembly 23 includes a second T-shaped screw 231 with its head clamped in the rotary workbench 4. The second T-shaped screw 231 is provided with a second pressing block 232, one end of which is in contact with the main pipe support seat 21 or the branch pipe support seat 22, and the other end is provided with a support block 233 between the second pressing block 232 and the rotary workbench 4. Above the second pressing block 232 is a second nut 234 which is screwed onto the second T-shaped screw 231. The head of the second T-shaped screw 231 is designed to be clamped into the T-shaped groove of the rotary workbench 4, thereby achieving fixation with the workbench. Through the cooperation of the second pressing block 232 and the second nut 234, the second lower pressing assembly 23 can firmly fix the main pipe support seat 21 or the branch pipe support seat 22 on the rotary workbench 4. The operator can adjust the position of the second pressing block 232 by rotating the second nut 234, thereby accurately controlling the pressure applied to the support seat to adapt to different machining requirements and the size of the branch pipe. The presence of the support block 233 increases the stability of the entire lower pressing assembly, ensuring that the support seat does not shift during machining due to vibration or force.

[0032] As another specific embodiment, the main pipe support seat 21 includes two, one at each end of the main pipe of the workpiece 3. This can ensure uniform support of the main pipe of the workpiece 3 during machining, preventing deformation or tilting due to single-point support. The straightness and stability of the main pipe are maintained to the greatest extent, especially during machining, which can effectively resist deformation caused by cutting force, gravity or other external forces.

[0033] As another specific embodiment, the main pipe support seat 21 or the branch pipe support seat 22 includes a bottom plate 24, on which two parallel support plates 25 are arranged. The top of the support plate 25 is arc-shaped or V-shaped. The two support plates 25 are connected by a rib plate 26. The bottom plate 24 is the base part of the support seat, which directly contacts the rotary workbench 4 and provides a stable support surface for the entire support seat. The support plates 25 are arranged on the bottom plate 24 and are parallel to each other, providing uniform support. Specifically, the support plates 25 are parallel to the axis of the main pipe or branch pipe, thereby positioning the axis of the main pipe or branch pipe. The top of the support plate 25 is designed to be arc-shaped or V-shaped, which can better adapt to the shape of the main pipe or branch pipe and achieve the centering of the circular pipe. The rib plate 26 connects the two support plates 25, enhancing the structural strength of the support seat. The design of the rib plate 26 can prevent the support plate 25 from bending or deforming when subjected to pressure, and also improves the overall stability of the support seat, keeping its shape and position unchanged during machining. The combination of the bottom plate 24, support plate 25 and rib plate 26 of the support seat makes the support seat have good strength and stiffness, capable of withstanding the forces and vibrations generated during machining.

[0034] As another specific embodiment, the middle part of the bottom plate 24 is provided with a first weight-reducing hole 241. The main function of the first weight-reducing hole 241 is to reduce the weight of the entire support seat. By opening a hole in the middle part of the bottom plate 24, the use of materials can be reduced, thereby reducing the weight of the support seat.

[0035] As another specific embodiment, the middle part of the bottom plate 24 is provided with a first weight-reducing hole 241. The main function of the first weight-reducing hole 241 is to reduce the weight of the entire support seat. By opening a hole in the middle part of the bottom plate 24, the use of materials can be reduced, thereby reducing the weight of the support seat.

[0036] As another specific embodiment, the top of the support plate 25 is arc-shaped, and the middle part of the arc-shaped part has a U-shaped groove 251. The support plate 25 is designed to be arc-shaped, which helps to better adapt to the circular cross-section of the main pipe or branch pipe and provide uniform support force. The U-shaped groove 251 provides space for installation and adjustment.

[0037] As another specific embodiment, the top of the support plate 25 is arc-shaped, and the arc of the arc-shaped part is the same as the arc of the corresponding position of the workpiece 3. The arc-shaped support plate 25 can perfectly fit the circular cross-section of the workpiece 3, providing uniform support force and avoiding deformation of the workpiece 3 due to excessive local pressure. Moreover, since the support plate 25 has a large contact area with the workpiece 3, it can effectively disperse the stress on the workpiece 3, reduce stress concentration, and improve the service life of the workpiece 3.

[0038] The above description is only a preferred embodiment of the present application and is not intended to limit the present application. The present application extends to any new feature or any new combination disclosed in the present specification, and any modification, equivalent replacement and improvement made within the spirit and principle of the present application shall be included in the protection scope of the present application. It is obvious for those skilled in the art that the present application is not limited to the details of the above exemplary embodiments, and the details of the embodiments not disclosed, such as specific structures, connection methods, etc., can be obtained from the prior art by those skilled in the art, and the present disclosure does not specifically limit them.

Claims

1. A machining fixture for a large impact-type branch pipe, characterized in that: The assembly includes a pressing fixture assembly (1) and a supporting fixture assembly (2). The pressing fixture assembly (1) includes a pressure plate (11) welded to the workpiece (3) and a first pressing component (12) detachably fixed to the rotary table (4), the first pressing component (12) being in contact with the pressure plate (11). The supporting fixture assembly (2) includes a main pipe support seat (21) detachably fixed to the rotary table (4) and a branch pipe support seat (22).

2. The machining fixture for the large impact-type branch pipe as described in claim 1, characterized in that: The first pressing assembly (12) includes a first T-shaped screw (121) whose head is locked inside the rotary table (4). The first T-shaped screw (121) is provided with a first pressure block (122). One end of the first pressure block (122) is in contact with the pressure plate (11). The other end of the first pressure block (122) is provided with a support column (123) between it and the rotary table (4). A first nut (124) is provided above the first pressure block (122). The first nut (124) is screwed onto the first T-shaped screw (121).

3. The machining fixture for large impact-type branch pipes as described in claim 1, characterized in that: The main support seat (21) and the branch support seat (22) are respectively fixed on the rotary table (4) by a plurality of second pressing components (23), and the plurality of second pressing components (23) are assembled on the outer periphery of the main support seat (21) and the branch support seat (22).

4. The machining fixture for the large impact-type branch pipe as described in claim 3, characterized in that: The second pressing assembly (23) includes a second T-shaped screw (231) whose head is locked inside the rotary table (4). The second T-shaped screw (231) is provided with a second pressing block (232). One end of the second pressing block (232) is in contact with the main pipe support seat (21) or the branch pipe support seat (22). The other end of the second pressing block (232) is provided with a support block (233) between it and the rotary table (4). A second nut (234) is provided above the second pressing block (232). The second nut (234) is screwed onto the second T-shaped screw (231).

5. The machining fixture for large impact-type branch pipes as described in claim 1, characterized in that: The main support seat (21) includes two, and the two main support seats (21) are respectively located at both ends of the main body of the workpiece (3).

6. The machining fixture for large impact-type branch pipes as described in claim 1, characterized in that: The main support seat (21) or branch support seat (22) includes a base plate (24), on which two parallel support plates (25) are provided. The top of the support plate (25) is arc-shaped or V-shaped. A stiffening plate (26) connects the two support plates (25).

7. The machining fixture for the large impact-type branch pipe as described in claim 6, characterized in that: The base plate (24) has a first weight reduction hole (241) in the middle.

8. The machining fixture for the large impact-type branch pipe as described in claim 6, characterized in that: The stiffener (26) is provided with a second weight-reducing hole (261) in the middle.

9. The machining fixture for the large impact-type branch pipe as described in claim 6, characterized in that: The top of the support plate (25) is arc-shaped, and the middle part of the arc has a U-shaped groove (251).

10. The machining fixture for the large impact-type branch pipe as described in claim 6, characterized in that: The top of the support plate (25) is arc-shaped, and the arc of the arc is the same as the arc of the corresponding position of the workpiece (3).

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