A CNC fixture for pump end covers

Abstract

The utility model discloses a kind of CNC fixing device for pump end cover, including fixed platform, and fixed platform is equipped with pressing mechanism and jacking mechanism;Pressing mechanism includes three pressing assemblies, and pressing assembly includes pressing cylinder, fixed rod, press block and connecting rod, and pressing cylinder is set in the bottom of fixed platform, and fixed rod is set in the top of fixed platform, and one end of press block is hinged with the top end of fixed rod by shaft pin, and the other end is equipped with pressure head, and the both ends of connecting rod are respectively hinged with press block and the output shaft of pressing cylinder by shaft pin;Jacking mechanism includes two pressing assemblies, and pressing assembly includes pressing cylinder and jacking rod, and pressing cylinder is set in the bottom of fixed platform, and the output shaft of pressing cylinder is connected with jacking rod.The utility model discloses a kind of CNC fixing device for pump end cover, its structure is reasonable, and pressing mechanism and jacking mechanism are set to act on the upper and lower sides of pump end cover respectively, can reliably fix the pump end cover, effectively promote the CNC machining precision of pump end cover.

Description

Technical Field

[0001] This utility model relates to a CNC fixing device for a pump end cover. Background Technology

[0002] Pump end covers are components installed at both ends of a mechanical pump to seal the pump chamber and support the rotor. During the production of pump end covers, CNC machining is required.

[0003] Currently, CNC machining of pump end caps mostly uses unidirectional pressure plates or general-purpose fixtures for fixation, which has the following problems: applying pressure only on one side can easily lead to deformation of the thin-walled end cap, and the fixation is not reliable enough; machining vibration can easily cause workpiece displacement, affecting machining accuracy. Therefore, it is necessary to design corresponding technical solutions to solve the above problems. Summary of the Invention

[0004] To overcome the aforementioned deficiencies of the prior art, this utility model provides a CNC fixing device for a pump end cover, thereby solving the problems mentioned in the background art.

[0005] To achieve the above objectives, the technical solution of this utility model is to design a CNC fixing device for a pump end cover, including a fixing platform, wherein the fixing platform is provided with a pressing mechanism and a tightening mechanism;

[0006] The clamping mechanism includes three clamping components arranged in a Y-shape. Each clamping component includes a clamping cylinder, a fixed rod, a pressure block, and a connecting rod. The clamping cylinder is located at the bottom of the fixed platform, and its output shaft passes through the fixed platform and extends above it. The fixed rod is located at the top of the fixed platform and is positioned outside the output shaft of the clamping cylinder. The pressure block is located above the output shaft of the clamping cylinder. One end of the pressure block is hinged to the top of the fixed rod via a pin, and the other end of the pressure block is provided with a pressure head. Both ends of the connecting rod are hinged to the pressure block and the output shaft of the clamping cylinder via pins, respectively.

[0007] The clamping mechanism includes two clamping components, which are located between two adjacent clamping components. Each clamping component includes a clamping cylinder and a push rod. The clamping cylinder is located at the bottom of the fixed platform, and its output shaft passes through the fixed platform and is connected to the push rod.

[0008] Preferably, the fixed platform is further provided with a positioning mechanism, which includes three positioning blocks, each of which corresponds to one of the three pressing components. Each positioning block is located inside the corresponding pressing component, and each positioning block has a slot on its top.

[0009] Preferably, the positioning mechanism further includes a positioning column, which is disposed at the top center of the fixed platform.

[0010] Preferably, a base plate is connected to the bottom of the fixed platform.

[0011] Preferably, four support columns are provided between the base plate and the fixed platform. The four support columns are arranged in a rectangular shape, and the two ends of each support column are connected to the base plate and the fixed platform, respectively.

[0012] The advantages and beneficial effects of this utility model are as follows: It provides a CNC fixing device for a pump end cover, which has a reasonable structure. By setting a clamping mechanism and a top clamping mechanism to act on the upper and lower sides of the pump end cover respectively, it can reliably fix the pump end cover and effectively improve the CNC machining accuracy of the pump end cover. Furthermore, by setting a positioning mechanism to position the pump end cover, it avoids the pump end cover from becoming skewed, facilitates subsequent fixing operations, and ensures the reliability of the fixing. Attached Figure Description

[0013] Figure 1 This is a schematic diagram of the present invention.

[0014] Figure 2 yes Figure 1 A schematic diagram showing the pump end cover concealed.

[0015] Figure 3 This is a schematic diagram of the positioning block in this utility model.

[0016] Figure 4 This is a schematic diagram of the pump end cover in this utility model.

[0017] Reference numerals in the attached drawings: 1. Fixed platform; 2. Clamping cylinder; 3. Fixed rod; 4. Clamping block; 5. Connecting rod; 6. Clamping head; 7. Tightening cylinder; 8. Push rod; 9. Positioning block; 10. Slot; 11. Positioning column; 12. Base plate; 13. Support column; 100. Pump end cover; 101. Raised ridge; 102. Protrusion. Detailed Implementation

[0018] The specific embodiments of this utility model will be further described below with reference to the accompanying drawings and examples. The following examples are only used to more clearly illustrate the technical solution of this utility model and should not be construed as limiting the scope of protection of this utility model.

[0019] The specific technical solution of this utility model is as follows:

[0020] In one specific embodiment, such as Figure 1 , Figure 2 and Figure 4 As shown, this utility model provides a CNC fixing device for a pump end cover, including a fixing platform 1, on which a pressing mechanism and a tightening mechanism are provided;

[0021] The clamping mechanism includes three clamping components arranged in a Y-shape. Each clamping component includes a clamping cylinder 2, a fixing rod 3, a clamping block 4, and a connecting rod 5. The clamping cylinder 2 is located at the bottom of the fixed platform 1, and its output shaft passes through the fixed platform and extends above the fixed platform 1. The fixing rod 3 is located at the top of the fixed platform 1 and is located outside the output shaft of the clamping cylinder 1. The clamping block 4 is located above the output shaft of the clamping cylinder 1. One end of the clamping block 4 is hinged to the top of the fixing rod 3 by a pin, and the other end of the clamping block 4 is provided with a pressure head 6. The two ends of the connecting rod 5 are respectively hinged to the clamping block 4 and the output shaft of the clamping cylinder 2 by pins.

[0022] The clamping mechanism includes two clamping components, which are located between two adjacent clamping components. Each clamping component includes a clamping cylinder 7 and a push rod 8. The clamping cylinder 7 is located at the bottom of the fixed platform 1, and the output shaft of the clamping cylinder 7 passes through the fixed platform 1 and is connected to the push rod 8.

[0023] The above solution is adopted: When using the CNC fixing device for pump end cover of this utility model, the pump end cover 100 to be processed is placed on the fixing platform 1. The bottom of the pump end cover 100 has a central hole, and the outer wall of the pump end cover 100 has three protruding ridges 101 and two protrusions 102. The clamping cylinder 2 is activated to retract, so that the clamping cylinder 2 drives the pressure block 4 to rotate downward through the connecting rod 5, so that the pressure block 4 presses the top of the protruding ridges 101 of the pump end cover 100 through the pressure head 6. The three clamping components press the three protruding ridges 101 of the pump end cover 100 respectively. At the same time, the top clamping cylinder 7 is activated to extend, so that the top clamping cylinder 7 drives the top rod 8 to move upward and press the bottom of the protrusions 102 of the pump end cover 100. The two top clamping components press the two protrusions 102 of the pump end cover 100 respectively, thereby reliably fixing the pump end cover 100.

[0024] In another specific embodiment, such as Figure 1 , Figure 2 , Figure 3 and Figure 4 As shown, the fixed platform is also provided with a positioning mechanism, which includes three positioning blocks 9. The three positioning blocks 9 correspond one-to-one with the three pressing components. Each positioning block 9 is located inside the corresponding pressing component, and each positioning block 9 has a slot 10 on its top.

[0025] The above solution is adopted: by setting a positioning mechanism, when placing the pump end cover 100, the three protruding ridges 101 of the pump end cover 100 are respectively inserted into the slots 101 of the three positioning blocks 9, thereby realizing the positioning of the pump end cover 100.

[0026] In another specific embodiment, such as Figure 1 , Figure 2 and Figure 4 As shown, the positioning mechanism also includes a positioning column 11, which is located at the top center of the fixed platform 1.

[0027] The above solution is adopted: by setting a positioning post 11, when placing the pump end cover 100, the positioning post 11 is inserted into the center hole of the pump end cover 100 to improve the positioning effect of the pump end cover 100.

[0028] In another specific embodiment, such as Figure 1 and Figure 2 As shown, a base plate 12 is connected to the bottom of the fixed platform 1.

[0029] In another specific embodiment, such as Figure 1 and Figure 2 As shown, four support columns 13 are provided between the base plate 12 and the fixed platform 1. The four support columns 13 are arranged in a rectangular shape, and the two ends of each support column 13 are connected to the base plate 12 and the fixed platform 1, respectively.

[0030] The above description is only a preferred embodiment of the present utility model. It should be noted that for those skilled in the art, several improvements and modifications can be made without departing from the technical principles of the present utility model, and these improvements and modifications should also be considered within the protection scope of the present utility model.

Claims

1. A CNC fixing device for a pump end cover, comprising a fixing platform (1), characterized in that, The fixed platform (1) is equipped with a pressing mechanism and a top-pressing mechanism; The clamping mechanism includes three clamping components arranged in a Y-shape. Each clamping component includes a clamping cylinder (2), a fixing rod (3), a clamping block (4), and a connecting rod (5). The clamping cylinder (2) is located at the bottom of the fixed platform (1), and the output shaft of the clamping cylinder (2) passes through the fixed platform (1) and extends to the top of the fixed platform (1). The fixing rod (3) is located at the top of the fixed platform (1), and the fixing rod (3) is located outside the output shaft of the clamping cylinder (2). The clamping block (4) is located above the output shaft of the clamping cylinder (2). One end of the clamping block (4) is hinged to the top of the fixing rod (3) by a pin, and the other end of the clamping block (4) is provided with a pressure head (6). The two ends of the connecting rod (5) are hinged to the clamping block (4) and the output shaft of the clamping cylinder (2) by pins respectively. The clamping mechanism includes two clamping components, which are located between two adjacent clamping components. Each clamping component includes a clamping cylinder (7) and a push rod (8). The clamping cylinder (7) is located at the bottom of the fixed platform (1), and the output shaft of the clamping cylinder (7) passes through the fixed platform (1) and is connected to the push rod (8).

2. The CNC fixing device for a pump end cover according to claim 1, characterized in that, The fixed platform (1) is also provided with a positioning mechanism, which includes three positioning blocks (9). The three positioning blocks (9) correspond one-to-one with three pressing components. Each positioning block (9) is located inside the corresponding pressing component, and each positioning block (9) has a slot (10) on its top.

3. The CNC fixing device for the pump end cover according to claim 2, characterized in that, The positioning mechanism also includes a positioning column (11), which is located at the top center of the fixed platform (1).

4. The CNC fixing device for a pump end cover according to claim 1, characterized in that, The fixed platform (1) is connected to a base plate (12) below.

5. The CNC fixing device for a pump end cover according to claim 4, characterized in that, Four support columns (13) are provided between the base plate (12) and the fixed platform (1). The four support columns (13) are arranged in a rectangular shape, and the two ends of each support column (13) are connected to the base plate (12) and the fixed platform (1) respectively.

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