Clamping device for inclined hole drilling of 8-shaped part

Abstract

The utility model discloses a clamping device for drilling an inclined hole in an 8-shaped part, which comprises a fixed bottom plate, a positioning bottom plate is arranged above the fixed bottom plate, and the positioning bottom plate and the fixed bottom plate are connected through a coupling piece. A movable part for adjusting the inclination angle of the positioning bottom plate is further arranged between the positioning bottom plate and the fixed bottom plate, and two positioning core rods for limiting 8-shaped parts with different center distances are detachably assembled on the surface of the positioning bottom plate. The clamping device is simple in structure, the clamping device can adapt to products with different inner hole sizes by replacing the positioning core rods with different sizes so as to meet machining of the products with different specifications, meanwhile, the distance between the two positioning core rods is adjusted so as to meet machining of inclined holes of 8-shaped parts with different center distances, and the machining efficiency is improved. The repeated utilization of the tool is ensured, the production cost is reduced, and the production efficiency is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of parts processing, in particular to a clamping device for drilling oblique holes in figure-8 parts. Background Art

[0002] The 8-shaped part is a floating side plate made of metal. The floating side plate is one of the core components of the internal gear pump and has an important impact on the life and volumetric efficiency of the pump. The floating side plate is affected by the pressure oil in the oil pressure chamber surrounded by the gear end face and the meniscus in the pump, and by the pressure oil in the back pressure chamber of the floating side plate, so as to compensate for the end face leakage of the gear pump. The part where the two inner holes of the 8-shaped part are connected needs to be drilled with an oblique hole, and the 8-shaped part needs to use a clamping device during the drilling process.

[0003] Traditional clamping devices require the same clamping device to be made according to the size of different products due to the structure of the fixture, so it takes a long time to complete the processing of the part. At the same time, the tooling cannot be used to fix products of different sizes, which increases production costs and affects production efficiency. Therefore, a clamping device for drilling inclined holes in figure 8 parts is proposed. Utility Model Content

[0004] The utility model aims to provide a clamping device for drilling oblique holes in figure-8 parts, so as to solve the problems raised in the above-mentioned background technology.

[0005] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a clamping device for drilling inclined holes in figure-8 parts, comprising a fixed base plate, a positioning base plate is provided above the fixed base plate, the positioning base plate and the fixed base plate are connected by a coupling, and a movable part for adjusting the inclination angle of the positioning base plate is also provided between the positioning base plate and the fixed base plate, and two positioning core rods for limiting figure-8 parts with different center distances are detachably assembled on the surface of the positioning base plate.

[0006] As a further solution of the utility model: the coupling member includes a fixed hinge installed on the upper surface of the fixed base plate, and the fixed hinge is rotatably connected to a rotating hinge fixedly connected to the positioning base plate.

[0007] As a further solution of the utility model: the end of the positioning core rod protruding from the surface of the positioning base plate matches the inner hole of the 8-shaped part.

[0008] As a further solution of the utility model: the movable part includes two gaskets respectively arranged on opposite sides of the fixed base plate, and the surfaces of the gaskets are in contact with the surfaces of the positioning base plate and the fixed base plate.

[0009] As a further solution of the utility model: a slide groove and a through hole are provided on the two gaskets, a first bolt is installed in the through hole, and the end of the first bolt passes through the gasket and is threadedly connected to the fixed base plate, and the second bolt is threadedly connected to the positioning base plate and the end passes through the slide groove.

[0010] As a further solution of the utility model: a fixed countersunk hole and a sliding countersunk groove are opened on the surface of the positioning base plate, and a positioning core rod is installed in each of the fixed countersunk hole and the sliding countersunk groove.

[0011] Compared with the prior art, the beneficial effects of the utility model are as follows: the clamping device can adapt to products with different inner hole sizes by replacing positioning core rods of different sizes to meet the processing of products of different specifications. At the same time, by adjusting the spacing between the two positioning core rods, the inclined hole processing of 8-shaped parts with different center distances can be met, thereby ensuring the reuse of tooling, reducing production costs and improving production efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 This is a schematic diagram of the overall structure of the clamping device of the utility model;

[0013] Figure 2 It is a cross-sectional schematic diagram of the clamping device of the utility model;

[0014] Figure 3 This is a schematic diagram of the structure of the figure 8 parts of the utility model;

[0015] Figure 4 It is a schematic diagram of the gasket structure of the utility model;

[0016] In the figure: 1, 8-shaped part; 2, positioning core rod; 3, positioning base plate; 31, fixed countersunk hole; 32, sliding countersunk groove; 33, threaded hole; 4, rotating hinge; 5, fixed hinge; 6, fixed base plate; 61, threaded inner hole; 7, gasket; 71, slide groove; 72, through hole. DETAILED DESCRIPTION

[0017] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0018] See also Figure 1-4In an embodiment of the utility model, a clamping device for drilling inclined holes in figure-8 parts comprises a fixed base plate 6, a positioning base plate 3 is provided above the fixed base plate 6, the positioning base plate 3 and the fixed base plate 6 are connected by a coupling, and a movable part for adjusting the inclination angle of the positioning base plate 3 is also provided between the positioning base plate 3 and the fixed base plate 6, and two positioning core rods 2 for limiting the figure-8 parts 1 with different center distances are detachably assembled on the surface of the positioning base plate 3.

[0019] Specifically, two threaded inner holes 61 are provided on the fixed base plate 6, and bolts are inserted into the two threaded inner holes 61 to fix them to the corresponding table tops. The coupling is fixed to the fixed base plate 6 and the positioning base plate 3 by bolts. Secondly, there are two positioning core rods 2, and the two positioning core rods 2 are fixed to the positioning base plate 3 by bolts. One of the positioning core rods 2 is used to fix the initial end of the 8-shaped part 1, and the position of the other positioning core rod 2 can be adjusted according to the 8-shaped part 1 with different center distances. The two positioning core rods The ends of the rod 2 protruding from the surface of the positioning base plate 3 are matched with the inner hole of the 8-shaped part 1. When the 8-shaped part 1 is sleeved on the positioning core rod 2, its position can be fixed, and the inclination angle of the positioning base plate 3 is adjusted by the movable part to ensure that the drilling equipment can drill inclined holes of different angles. After the angle adjustment is completed, the drilling equipment is used to drill the middle of the 8-shaped part 1. When the drilling of one side of the 8-shaped part 1 is completed, the 8-shaped part 1 is taken out and turned 180 degrees to drill the other side. The 8-shaped part 1 after drilling is completed is as shown in FIG. Figure 3 shown.

[0020] See also Figure 1-2 In one embodiment, in this embodiment, preferably, the coupling comprises a fixed hinge 5 mounted on the upper surface of the fixed base plate 6, and the fixed hinge 5 is rotatably connected with a rotating hinge 4 fixedly connected to the positioning base plate 3. Further, the fixed hinge 5 is fixed to the fixed base plate 6 by bolts, and the rotating hinge 4 is fixed to the positioning base plate 3 by bolts passing through threaded holes 33. The fixed hinge 5 is connected to the rotating hinge 4 through a small hole, and a rotating rod connecting the fixed hinge 5 and the rotating hinge 4 is inserted in the small hole.

[0021] See also Figure 1 and Figure 4 In one embodiment, in this embodiment, preferably, the movable part includes two gaskets 7 respectively arranged on opposite sides of the fixed base plate 6, and the surfaces of the gaskets 7 are in contact with the surfaces of the positioning base plate 3 and the fixed base plate 6. The two gaskets 7 are provided with a slide groove 71 and a through hole 72. A first bolt is installed in the through hole 72, and the end of the first bolt passes through the gasket 7 and is threadedly connected to the fixed base plate 6. The positioning base plate 3 is threadedly connected to a second bolt with its end passing through the slide groove 71.

[0022] Specifically, a first bolt is inserted into the through hole 72 of the gasket 7, and the first bolt is threadedly connected to the fixed base plate 6. The gasket 7 can rotate along the axis of the first bolt. A second bolt is inserted into the slide groove 71, and the second bolt is threadedly connected to the positioning base plate 3. By rotating the second bolt clockwise or counterclockwise, the second bolt can squeeze the gasket 7 or not squeeze the gasket 7. When the second bolt does not squeeze the gasket 7, the inclination angle of the positioning base plate 3 can be adjusted. When the second bolt squeezes the gasket 7, the position of the positioning base plate 3 after the angle is adjusted can be fixed.

[0023] See also Figure 2 In one embodiment, in this embodiment, preferably, a fixed countersunk hole 31 and a sliding countersunk groove 32 are opened on the surface of the positioning base plate 3, and a positioning core rod 2 is installed in the fixed countersunk hole 31 and the sliding countersunk groove 32.

[0024] Specifically, the design of the fixed countersunk hole 31 can fix the position of one of the positioning core rods 2. At the same time, the design of the sliding countersunk groove 32 can change the installation position of the other positioning core rod 2 according to the spacing between the two inner holes in the 8-shaped part 1. In this way, the positioning core rod 2 can be adjusted within the movable range of the sliding countersunk groove 32 to adapt to parts with different center distances. At the same time, the positioning core rod 2 can be replaced according to the size of the inner holes of different products to meet the processing of products of different specifications. By positioning and limiting the 8-shaped part 1, the part will not shake and the position of the part will not change, thereby improving the processing accuracy and also meeting the fixation of parts with different center distances and different sizes.

[0025] The working principle and use process of the utility model are as follows: firstly, a positioning core rod 2 matching the inner hole size of the figure-8-shaped part 1 is assembled, and fixed on the positioning base plate 3 with bolts; then, the figure-8-shaped part 1 is clamped on the positioning core rod 2 to be fixed; then, the second bolt is rotated clockwise or counterclockwise, and the angle of the positioning base plate 3 is manually adjusted to meet the processing of inclined holes at different angles; small holes are drilled as required; and another small hole is drilled after the part is turned 180 degrees to connect the two small holes.

[0026] Although this specification is described according to implementation modes, not every implementation mode includes only one independent technical solution. This description of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment may also be appropriately combined to form other implementation modes that can be understood by those skilled in the art.

[0027] Therefore, the above description is only a preferred embodiment of the present application and is not intended to limit the scope of implementation of the present application; that is, all equivalent changes made according to the scope of the claims of the present application are within the protection scope of the claims of the present application.

Claims

1. A clamping device for drilling oblique holes in figure-8 parts, comprising a fixed base plate (6), characterized in that: A positioning base plate (3) is provided above the fixed base plate (6); the positioning base plate (3) and the fixed base plate (6) are connected via a coupling; a movable part for adjusting the tilt angle of the positioning base plate (3) is also provided between the positioning base plate (3) and the fixed base plate (6); and two positioning core rods (2) for limiting 8-shaped parts (1) with different center distances are detachably mounted on the surface of the positioning base plate (3).

2. The clamping device for drilling oblique holes in figure-8 parts according to claim 1 is characterized in that: The coupling member comprises a fixed hinge (5) mounted on the upper surface of the fixed base plate (6), and the fixed hinge (5) is rotatably connected to a rotating hinge (4) fixedly connected to the positioning base plate (3).

3. The clamping device for drilling oblique holes in figure-8 parts according to claim 1, characterized in that: The end of the positioning core rod (2) protruding from the surface of the positioning base plate (3) matches the inner hole of the 8-shaped part (1).

4. The clamping device for drilling oblique holes in figure-8 parts according to claim 1, characterized in that: The movable part comprises two gaskets (7) respectively arranged on opposite sides of the fixed base plate (6), and the surfaces of the gaskets (7) are in contact with the surfaces of the positioning base plate (3) and the fixed base plate (6).

5. The clamping device for drilling oblique holes in figure-8 parts according to claim 4 is characterized in that: The two gaskets (7) are each provided with a slide groove (71) and a through hole (72), a first bolt is installed in the through hole (72), and the end of the first bolt passes through the gasket (7) and is threadedly connected to the fixed base plate (6), and the positioning base plate (3) is threadedly connected to a second bolt whose end passes through the slide groove (71).

6. The clamping device for drilling oblique holes in figure-8 parts according to claim 1, characterized in that: The surface of the positioning base plate (3) is provided with a fixed countersunk hole (31) and a sliding countersunk groove (32), and the fixed countersunk hole (31) and the sliding countersunk groove (32) are both equipped with a positioning core rod (2).

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