Pump body flange face milling fixture

Abstract

The utility model discloses a pump body flange face milling clamp, including the clamp bottom plate, the top portion of clamp bottom plate is integrative with the placement board, the above of placement board can place the pump body, is equipped with the clamping positioning device at the top portion of clamp bottom plate corresponding placement board both sides, and the clamping positioning device includes the mobile positioning plate piece, is equipped with the positioning post on the mobile positioning plate piece, and the left and right sides of pump body are equipped with the positioning hole corresponding with the positioning post, and the top portion of pump body is the flange connection surface, and the pump body includes the fixed plate in the front side, and the front side of clamp bottom plate top portion is equipped with the clamping block no.

Description

Technical Field

[0001] This utility model relates to the field of pump body processing technology, and in particular to a pump body flange milling fixture. Background Technology

[0002] Milling the pump body flange face is a core process for ensuring pump performance and reliability. Precision milling significantly improves the flatness, parallelism, and surface roughness of the flange face, ensuring a tight fit with pipes or seals, effectively preventing media leakage, and improving sealing performance. Simultaneously, precise flange face machining ensures accurate assembly of the pump body with components such as motors and valves, reducing operating vibration and noise, and extending equipment life. Milling the pump body flange face typically requires the use of clamps for clamping and positioning.

[0003] In the existing technology, a typical pump body flange milling fixture usually uses a fixed block and a moving block to clamp the pump body. The movement of the moving block often requires more strokes and consumes more clamping and positioning time, which affects work efficiency. At the same time, a pump body placed randomly on the fixture may require more time to clamp and position. Therefore, it is necessary to improve the pump body flange milling fixture to solve the above problems. Utility Model Content

[0004] To overcome the problem that existing pump body flange milling fixtures require a lot of time for clamping and positioning, and that the pump body may deviate significantly from the accurate point due to the lack of a preliminary positioning device, requiring a lot of time to push the pump body to the appropriate position.

[0005] The technical solution of this utility model is as follows: a pump body flange milling fixture, including a fixture base plate, an integrally formed placement plate on the top of the fixture base plate, on which a pump body can be placed, clamping and positioning devices are provided on the top of the fixture base plate corresponding to both sides of the placement plate, the clamping and positioning devices include a movable positioning plate, a positioning post on the movable positioning plate, positioning holes corresponding to the positioning posts on the left and right sides of the pump body, the top of the pump body is a flange connection surface, the pump body includes a fixing plate located on the front side, a second clamping block is provided on the front side of the top of the fixture base plate, a first clamping block is provided on the front side of the top of the placement plate, and the fixing plate can be placed between the first clamping block and the second clamping block.

[0006] Preferably, the top of the fixture base plate is provided with a fixed end two on the left side of the placement plate, and the top of the fixture base plate is provided with a fixed end one on the right side of the placement plate. A bidirectional threaded screw is rotatably connected between the fixed end one and the fixed end two. A servo motor for driving the bidirectional threaded screw to rotate is provided on the right side of the fixed end one. The placement plate is provided with a clearance hole that runs from left to right, through which the bidirectional threaded screw can pass. The movable positioning plate includes a bearing block, on which a screw nut is provided that is helically engaged with the bidirectional threaded screw. A positioning block is provided on the top of the bearing block. A fitting block is provided on the side of the positioning block facing the placement plate. A positioning post is provided on the side of the fitting block facing the placement plate. The side of the fitting block facing the placement plate is a C-surface, which is a precision-machined surface and can fit the pump body.

[0007] Preferably, the placement plate has a guide hole running from left to right, and the side of the support block facing the placement plate is provided with a guide rod corresponding to the guide hole.

[0008] Preferably, the bottom of the bearing block is provided with a dovetail groove, and the top of the fixture base plate is provided with dovetail blocks corresponding to the dovetail groove on the left and right sides of the placement plate.

[0009] Preferably, a protective device for blocking the bidirectional threaded screw is provided between the movable positioning plate and the placement plate. The protective device includes a baffle, which is located on the side of the positioning block closer to the placement plate. A connecting plate that can be connected to the positioning block is provided on the top side of the baffle away from the placement plate.

[0010] Preferably, the bottom of the baffle is provided with sliding plates on the front and rear sides respectively. The bottom of the baffle can fit against the top of the placement plate. The top of the placement plate is provided with a sliding groove to avoid the sliding plates. The bottom of the sliding plates can contact the bottom of the sliding groove. A slag discharge hole is provided in the middle part of the sliding groove.

[0011] Preferably, the top of clamping block two has a slope on the side facing clamping block one, and surfaces A and B are both precision-machined surfaces.

[0012] The beneficial effects of this utility model are:

[0013] 1. The clamping and positioning devices on both sides position the pump body. The two clamping and positioning devices clamp in opposite directions, which can reduce the clamping and positioning time and facilitate subsequent processing by the milling machine.

[0014] 2. A fixing plate can be placed between clamping block one and clamping block two to facilitate initial positioning, reduce the time consumed in subsequent positioning, and improve the overall clamping and positioning efficiency. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of one embodiment of the pump body flange face milling fixture of this utility model;

[0016] Figure 2 This is a schematic diagram of the structure of the mobile positioning plate of this utility model;

[0017] Figure 3 This is a schematic diagram of the bonding block structure of this utility model;

[0018] Figure 4 This is a schematic diagram of the second clamping block structure of this utility model;

[0019] Figure 5 This is a schematic diagram of the slide groove structure of this utility model.

[0020] Explanation of reference numerals in the attached drawings: 1. Fixture base plate; 11. Fixed end one; 12. Fixed end two; 13. Placement plate; 130. Clearance hole; 131. Sliding groove; 1311. Slag discharge hole; 132. Guide hole; 14. Clamping block one; 15. Dovetail block; 16. Clamping block two; 161. Slope; 2. Moving positioning plate; 21. Bearing block; 22. Positioning block; 23. Fitting block; 24. Positioning column; 25. Guide rod; 26. Screw nut; 27. Dovetail groove; 31. Baffle; 311. Sliding plate; 32. Connecting plate; 4. Servo motor; 41. Bidirectional threaded screw; 5. Pump body; 51. Flange connection surface; 52. Positioning hole; 54. Fixing plate. Detailed Implementation

[0021] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0022] Please see Figure 1 - Figure 5 This utility model provides an embodiment: a pump body flange milling fixture, including a fixture base plate 1, with a placement plate 13 integrally formed on the top of the fixture base plate 1. A pump body 5 can be placed on the top of the placement plate 13. Clamping and positioning devices are provided on both sides of the placement plate 13 at the top of the fixture base plate 1. Each clamping and positioning device includes a movable positioning plate 2, with positioning pins 24 on the movable positioning plate 2. Positioning holes 52 corresponding to the positioning pins 24 are provided on the left and right sides of the pump body 5. The top of the pump body 5 is a flange connection surface 51. The pump body 5 includes a flange connection surface 51 located at... The front fixing plate 54, the front side of the top of the fixture base plate 1 is provided with clamping block 2 16, and the front side of the top of the placement plate 13 is provided with clamping block 14. The fixing plate 54 can be placed between clamping block 14 and clamping block 2 16. The pump body 5 is positioned by clamping and positioning devices on both sides. The two clamping and positioning devices clamp each other in opposite directions, which can reduce the clamping and positioning time and facilitate the subsequent processing of the milling machine. The fixing plate 54 can be placed between clamping block 14 and clamping block 2 16, which facilitates the initial positioning, reduces the time consumed by subsequent positioning, and improves the overall clamping and positioning efficiency.

[0023] Please see Figure 1 - Figure 4In this embodiment, the top of the fixture base plate 1 is provided with a fixed end 2 12 on the left side corresponding to the placement plate 13, and the top of the fixture base plate 1 is provided with a fixed end 11 on the right side corresponding to the placement plate 13. A bidirectional threaded screw 41 is rotatably connected between the fixed end 11 and the fixed end 2 12. A servo motor 4 for driving the bidirectional threaded screw 41 to rotate is provided on the right side of the fixed end 11. The placement plate 13 is provided with a clearance hole 130 that runs from left to right, through which the bidirectional threaded screw 41 can pass. The movable positioning plate 2 includes a bearing. The carrier block 21 is equipped with a screw nut 26 that is helically engaged with the bidirectional threaded screw 41. A positioning block 22 is located on the top of the carrier block 21. A fitting block 23 is located on the side of the positioning block 22 facing the placement plate 13. A positioning post 24 is located on the side of the fitting block 23 facing the placement plate 13. The side of the fitting block 23 facing the placement plate 13 is a C-surface, which is a precision-machined surface. The C-surface can fit against the pump body 5. The bidirectional threaded screw 41 is driven to rotate by the servo motor 4, facilitating precise movement of the positioning plate 2 and enabling the pump body 5 to move. The positioning column 24 can be pushed to the correct position to achieve positioning of the pump body 5 in the front-back and up-down directions. The C-surface of the mating block 23 can fit the pump body 5 to position it in the left-right direction, ultimately achieving positioning in the three-axis direction. The C-surface is a precision-machined surface to improve positioning accuracy. A guide hole 132 runs through the placement plate 13 from left to right. The bearing block 21 has a guide rod 25 corresponding to the guide hole 132 on the side facing the placement plate 13. Through the cooperation of the guide rod 25 and the guide hole 132, the clamping position is increased. To improve the stability of the positioning device's movement, the bottom of the bearing block 21 is provided with a dovetail groove 27, and the top of the fixture base plate 1 is provided with dovetail blocks 15 corresponding to the dovetail groove 27 on the left and right sides of the placement plate 13. The cooperation between the dovetail groove 27 and the dovetail block 15 can make the clamping and positioning device run more stably, reduce the situation of inaccurate accuracy caused by offset, and improve the yield of milling the flange connection surface 51. Although the guide rod 25 and the dovetail block 15 are used together for guidance, it increases the difficulty of assembly, but it can increase the stable operation time of the clamping and positioning device.

[0024] Please see Figure 2 - Figure 5In this embodiment, a protective device for shielding the bidirectional threaded screw 41 is provided between the movable positioning plate 2 and the placement plate 13. The protective device includes a baffle 31, which is located on the side of the positioning block 22 near the placement plate 13. A connecting plate 32 that can be connected to the positioning block 22 is provided on the top side of the baffle 31 away from the placement plate 13. The baffle 31 provides a certain degree of shielding for the bidirectional threaded screw 41, reducing the amount of iron filings generated during milling of the flange connection surface 51 falling on the bidirectional threaded screw 41 and causing damage to the bidirectional threaded screw 41, thus extending the service life of the bidirectional threaded screw 41. Sliding plates 311 are respectively provided on the front and rear sides of the bottom of the baffle 31. The bottom of the baffle 31 can fit against the top of the placement plate 13, and the top of the placement plate 13 is provided with a sliding groove to avoid the sliding plates 311. 131, the bottom of the slide plate 311 can contact the bottom of the slide groove 131. A slag discharge hole 1311 is provided in the middle of the slide groove 131. The slide plates 311 on both sides of the baffle 31 can reduce the iron chips generated during milling from falling into the area below the baffle 31. The slide groove 131 can avoid the slide plate 311. The slag discharge hole 1311 facilitates the falling of iron chips in the slide groove 131, reducing the damage to the baffle 31 caused by interference due to the accumulation of iron chips in the slide groove 131. The top of the clamping block 2 16 is provided with a slope 161 on the side facing the clamping block 1 14. Surface A and surface B are both precision machined surfaces. The slope 161 facilitates the falling of the fixing plate 54. The precision machined surface A can increase the accuracy of the placement of the pump body 5, and the precision machined surface B can improve the accuracy of the fitting of the fixing plate 54.

[0025] During operation, the fixing plate 54 of the pump body 5 is placed between clamping blocks 14 and 16. The slope 161 has a guiding effect, allowing the fixing plate 54 to slide smoothly between clamping blocks 14 and 16 even if the placement is not accurate. The falling of the fixing plate 54 can push the pump body 5 to move within a certain range, thus completing the initial positioning process. Then, the servo motor 4 drives the bidirectional threaded screw 41 to rotate, causing the clamping and positioning devices on both sides to move closer to each other. The positioning pin 24 has a chamfer on the side facing the pump body 5, which facilitates the insertion of the positioning pin 24 into the positioning hole 52 for positioning. After the positioning pin 24 is inserted into the positioning hole 52, the upper and lower, and front and back positions of the pump body 5 are completed. After the direction is positioned, the side of the fixing plate 54 near the clamping block 14 is in contact with the B side. As the two clamping and positioning devices continue to move towards each other, the C side of the contact block 23 can be in contact with the pump body 5, so that the pump body 5 completes the positioning in the left and right directions. During the milling process of the flange connection surface 51 of the pump body 5, iron filings will fall on the baffle 31, preventing the iron filings from falling onto the bidirectional threaded screw 41 and causing damage to the bidirectional threaded screw 41 and the screw nut 26. The slide plate 311 can push the iron filings in the slide groove 131 to fall from the slag hole 1311 under the action of gravity, reducing the risk of interference damage to the baffle 31. When the slag hole 1311 is blocked, it can be cleared with a stick. The control, drive and wiring method of the servo motor 4 here are all existing technologies, and its working principle will not be described in detail here.

[0026] Through the above steps, the clamping and positioning devices on both sides position the pump body 5, which facilitates subsequent processing by the milling machine. A fixing plate 54 can be placed between clamping block 14 and clamping block 26 to facilitate initial positioning, reduce the time consumed by subsequent positioning, and improve the overall clamping and positioning efficiency. This solves the problem that the existing pump body flange milling fixture requires a lot of time for clamping and positioning, and because there is no related device for initial positioning, the placed pump body 5 may deviate far from the accurate point, requiring a lot of time to push the pump body 5 to the appropriate position.

Claims

1. A milling fixture for pump body flange face, characterized in that: The fixture includes a base plate (1), and a placement plate (13) is integrally formed on the top of the base plate (1). The pump body (5) can be placed on the top of the placement plate (13). A clamping and positioning device is provided on both sides of the top of the base plate (1) corresponding to the placement plate (13). The clamping and positioning device includes a movable positioning plate (2), and a positioning post (24) is provided on the movable positioning plate (2). The left and right sides of the pump body (5) are provided with positioning holes (52) corresponding to the positioning post (24). The top of the pump body (5) is a flange connection surface (51). The pump body (5) includes a fixing plate (54) located on the front side. A clamping block two (16) is provided on the front side of the top of the base plate (1), and a clamping block one (14) is provided on the front side of the top of the placement plate (13). The fixing plate (54) can be placed between the clamping block one (14) and the clamping block two (16).

2. The pump body flange face milling fixture according to claim 1, characterized in that: The top of the fixture base plate (1) is provided with a fixed end two (12) on the left side of the placement plate (13), and the top of the fixture base plate (1) is provided with a fixed end one (11) on the right side of the placement plate (13). A bidirectional threaded screw (41) is rotatably connected between the fixed end one (11) and the fixed end two (12). A servo motor (4) for driving the bidirectional threaded screw (41) to rotate is provided on the right side of the fixed end one (11). The placement plate (13) is provided with a clearance hole (130) that runs from left to right. The bidirectional threaded screw (41) can pass through the clearance hole (130). The moving positioning plate (2) passes through 0) and includes a bearing block (21). The bearing block (21) is provided with a screw nut (26) that is helically engaged with the bidirectional threaded screw (41). The top of the bearing block (21) is provided with a positioning block (22). The side of the positioning block (22) facing the placement plate (13) is provided with a fitting block (23). The side of the fitting block (23) facing the placement plate (13) is provided with a positioning post (24). The side of the fitting block (23) facing the placement plate (13) is a C-surface. The C-surface is a precision machined surface and can fit the pump body (5).

3. The pump body flange face milling fixture according to claim 2, characterized in that: A guide hole (132) runs through the placement plate (13) from left to right, and a guide rod (25) corresponding to the guide hole (132) is provided on the side of the support block (21) facing the placement plate (13).

4. The pump body flange face milling fixture according to claim 3, characterized in that: The bottom of the bearing block (21) is provided with a dovetail groove (27), and the top of the fixture base plate (1) is provided with dovetail blocks (15) corresponding to the dovetail groove (27) on the left and right sides of the placement plate (13).

5. The pump body flange face milling fixture according to claim 4, characterized in that: A protective device is provided between the movable positioning plate (2) and the placement plate (13) to shield the bidirectional threaded screw (41). The protective device includes a baffle (31). The baffle (31) is located on the side of the positioning block (22) close to the placement plate (13). A connecting plate (32) that can be connected to the positioning block (22) is provided on the side of the top of the baffle (31) away from the placement plate (13).

6. The pump body flange face milling fixture according to claim 5, characterized in that: The bottom of the baffle (31) is provided with sliding plates (311) on the front and back sides respectively. The bottom of the baffle (31) can fit against the top of the placement plate (13). The top of the placement plate (13) is provided with a sliding groove (131) that avoids the sliding plate (311). The bottom of the sliding plate (311) can contact the bottom of the sliding groove (131). A slag hole (1311) is provided in the middle part of the sliding groove (131).

7. The pump body flange face milling fixture according to claim 6, characterized in that: The top of clamping block 2 (16) has a slope (161) on the side facing clamping block 1 (14), and surfaces A and B are both finished surfaces.

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