A valve chamber cover milling and drilling clamp for unmanned diesel outboard engine

Abstract

The utility model provides a kind of valve chamber cover milling surface drilling fixture for unmanned diesel outboard engine, belong to the technical field of machining, including bottom plate, the top side of bottom plate is provided with the vertical stand of being perpendicular to bottom plate, positioning mechanism is provided on stand, for positioning valve chamber cover, the other side of bottom plate top is provided with the compacting mechanism of being fixed on bottom plate with valve chamber cover, while bottom plate top is located between compacting mechanism and stand, it is provided with the auxiliary support mechanism of being contacted with the edge of valve chamber cover and providing auxiliary support to valve chamber cover.Auxiliary support mechanism is positioned to the valve chamber cover to be processed with positioning mechanism, while the first pressing plate and second pressing plate in pressing plate mechanism are used in the utility model, the valve chamber cover to be processed can be quickly compacted on bottom plate, so as to improve the machining efficiency and machining precision of valve chamber cover milling surface drilling.

Description

Technical Field

[0001] This utility model belongs to the field of mechanical processing technology, and in particular relates to a milling and drilling fixture for valve cover of unmanned diesel outboard motor. Background Technology

[0002] Unmanned diesel outboard motors have significant application value in military defense, deep-sea patrol, and flood control and disaster relief, requiring extremely high safety and reliability. The valve cover, a key component of the diesel outboard motor, is made of cast aluminum alloy and undertakes important functions such as sealing and protection, internal lubrication maintenance, and structural support.

[0003] In existing technologies, the following method is typically used when milling and drilling valve covers: first, manual marking is performed using a height vernier caliper to determine the machining lines for the sealing surface and the hole positions; then, the part is transferred to a vertical machining center, clamped and positioned using a flat-jaw vise, and machined according to the markings. This traditional machining method has significant drawbacks: manually marking with a height vernier caliper before machining is repetitive and tedious, resulting in low machining efficiency; the flat-jaw vise clamping and positioning method makes it difficult to avoid deformation of the valve cover, failing to guarantee flatness, leading to poor machining accuracy and seriously affecting the quality of the part. Utility Model Content

[0004] This invention addresses the problem that flat-jaw vises, when used for clamping and positioning, inevitably cause deformation of the valve cover, compromising flatness and resulting in poor machining accuracy and severely impacting part quality. It also solves the problem of repetitive, cumbersome, and inefficient manual marking with height calipers before machining. This invention provides a valve cover milling and drilling fixture for unmanned diesel outboard motors, which prevents deformation of the valve cover during fixing.

[0005] The technical solution adopted by this utility model for a valve cover milling and drilling fixture for an unmanned diesel outboard engine is as follows:

[0006] A valve cover milling and drilling fixture for an unmanned diesel outboard motor includes a base plate, a vertical plate perpendicular to the base plate on one side of the top of the base plate, a positioning mechanism for positioning the valve cover on the vertical plate, a clamping mechanism for fixing the valve cover to the base plate on the other side of the top of the base plate, and an auxiliary support mechanism that contacts the edge of the valve cover and provides auxiliary support for the valve cover on the top of the base plate between the clamping mechanism and the vertical plate.

[0007] A further improvement of the present invention is that the positioning mechanism includes a pin seat disposed on the side of the vertical plate facing the pressing mechanism, and a positioning pin adapted to the camshaft hole of the valve cover is disposed on the side of the pin seat away from the vertical plate.

[0008] A further improvement of the present invention is that the positioning pin includes a cylindrical pin and a rhomboid pin disposed on the pin seat.

[0009] A further improvement of the present invention is that the pressing mechanism includes a first pressing plate disposed above the base plate and movable up and down corresponding to the sensor hole of the valve cover, and a second pressing plate disposed on one side of the first pressing plate and movable along the length direction of the base plate.

[0010] A further improvement of the present invention is that the auxiliary support mechanism includes multiple auxiliary supports disposed between the pressing mechanism and the vertical plate, and the multiple auxiliary supports are symmetrically distributed on the front and rear sides of the valve cover.

[0011] A further improvement of this utility model is that: the bottom of the base plate is provided with a T-slot nut that is compatible with the T-slot of the machining center worktable.

[0012] A further improvement of this utility model is that: the top of the base plate is provided with multiple lifting rings.

[0013] The technological advancements achieved by this utility model due to the adoption of the above technical solution are as follows:

[0014] This invention utilizes a positioning mechanism and an auxiliary support mechanism to precisely position the valve cover to be processed. At the same time, this invention utilizes the first and second pressure plates in the pressure plate mechanism to quickly press the valve cover to be processed onto the base plate, thereby improving the processing efficiency and accuracy of milling and drilling the valve cover. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the structure of a milling and drilling fixture for a valve cover of an unmanned diesel outboard motor provided by this utility model;

[0016] Figure 2 and Figure 3 This is a schematic diagram of the structure of a valve cover milling and drilling fixture for an unmanned diesel outboard motor provided by this utility model when clamping the valve cover;

[0017] Figure 4 and Figure 5 This is a schematic diagram of the valve cover structure.

[0018] In the attached diagram: 1. Base plate; 11. Vertical plate; 12. Nut for T-slot; 13. Lifting eye;

[0019] 2. Positioning mechanism; 21. Pin seat; 22. Cylindrical pin; 23. Diamond pin;

[0020] 3. Clamping mechanism; 31. First pressure plate; 32. Second pressure plate;

[0021] 4. Auxiliary support mechanism; 41. Auxiliary support;

[0022] 5. Sensor hole; 6. Camshaft hole. Detailed Implementation

[0023] To make the objectives, technical solutions, and advantages of this utility model clearer, the present utility model will be further described in detail below with reference to specific embodiments and accompanying drawings. In the following description, descriptions of well-known structures and technologies are omitted to avoid unnecessarily obscuring the concept of this utility model.

[0024] First refer to Figure 1 As can be seen, this utility model includes a base plate 1, with a vertical plate 11 perpendicular to the base plate 1 on one side of the top. A positioning mechanism 2 for positioning the valve cover is provided on the vertical plate 11. A clamping mechanism 3 for fixing the valve cover to the base plate 1 is provided on the other side of the top of the base plate 1. At the same time, an auxiliary support mechanism 4 is provided on the top of the base plate 1 between the clamping mechanism 3 and the vertical plate 11, which contacts the edge of the valve cover and provides auxiliary support for the valve cover. Multiple lifting rings 13 are also fixed to the top edge of the base plate 1. In addition, a T-slot nut 12 is fixed to the base plate 1, which is adapted to the T-slot of the machining center worktable.

[0025] In this embodiment, the positioning mechanism 2 includes a pin seat 21 fixed to the side of the upright plate 11 facing the pressing mechanism 3. A positioning pin adapted to the camshaft hole 6 of the valve cover is provided on the side of the pin seat 21 away from the upright plate 11. The positioning pin includes cylindrical pins 22 and diamond-shaped pins 23 fixed side-by-side on the pin seat 21, each cylindrical pin 22 and diamond-shaped pin 23 adapted to the camshaft hole 6 of the valve cover.

[0026] In this embodiment, the clamping mechanism 3 includes a first pressure plate 31 disposed above the base plate 1 and movable up and down, corresponding to the sensor hole 5 of the valve cover, and a second pressure plate 32 disposed on one side of the first pressure plate 31 and movable along the length direction of the base plate 1. In this embodiment, the second pressure plate 32 is Ω-shaped.

[0027] Specifically, a vertical first screw is fixed to the base plate 1 at the position corresponding to the first pressure plate 31. The first screw passes upward through the sensor hole 5 of the valve cover and the first pressure plate 31. A first clamping nut is threadedly connected to the first screw above the first pressure plate 31. At the same time, a vertical fixing plate is fixed to the top of the base plate 1 at the position opposite to the upright plate 11. The fixing plate has a U-shaped opening. A second screw that passes horizontally through the U-shaped opening is also connected to the fixing plate. One end of the second screw facing the upright plate 11 is hinged to the second pressure plate 32, and the other end of the second screw is hinged to a second clamping nut.

[0028] In this embodiment, the auxiliary support mechanism 4 includes multiple auxiliary supports 41 disposed between the pressing mechanism 3 and the upright plate 11, and the multiple auxiliary supports 41 are symmetrically distributed on the front and rear sides of the valve cover. The auxiliary supports 41 in this embodiment adopt the elastic support rods commonly used in the prior art.

[0029] The working principle of the valve cover milling and drilling fixture for unmanned diesel outboard motors in this embodiment is as follows: First, the present invention is hoisted to the workbench of the machining center by the lifting ring 13, and the T-slot of the base plate 1 is inserted into the T-slot of the workbench by the nut 12, thereby fixing the present invention on the workbench of the machining center.

[0030] The valve cover to be processed is then placed on the base plate 1, and the cylindrical pin 22 and diamond pin 23 of the positioning mechanism 2 are connected to the camshaft hole 6 of the valve cover. When the valve cover to be processed is placed on the base plate 1, the first screw passes upward through the sensor hole 5 of the valve cover, and the second pressure plate 32 is located in the hollow structure below the valve cover. Then, the first pressure plate 31 is placed on the first screw and the first clamping nut is screwed in, so that the first pressure plate 31 is tightly fitted to the valve cover. By rotating the second clamping nut, the second pressure plate 32 is moved towards the fixed plate, thereby fixing the valve cover to the base plate 1 through the cooperation of the first pressure plate 31 and the second pressure plate 32. This facilitates milling and drilling of the valve cover.

[0031] In the above embodiments, the present invention provides a valve cover milling and drilling fixture for unmanned diesel outboard motors. The present invention uses a positioning mechanism and an auxiliary support mechanism to accurately position the valve cover to be processed. At the same time, the present invention uses the first and second pressure plates in the pressure plate mechanism to quickly press the valve cover to be processed onto the base plate, thereby improving the processing efficiency and processing accuracy of the valve cover milling and drilling.

[0032] The embodiments described above are merely preferred embodiments of the present invention and are not intended to limit the concept and scope of the present invention. Various modifications and improvements made to the technical solutions of the present invention by those skilled in the art without departing from the design concept of the present invention should fall within the protection scope of the present invention. The technical content for which protection is sought in the present invention has been fully described in the claims.

Claims

1. A milling and drilling fixture for valve cover of an unmanned diesel outboard motor, comprising a base plate (1), characterized in that: A vertical plate (11) perpendicular to the bottom plate (1) is provided on one side of the top of the bottom plate (1). A positioning mechanism (2) for positioning the valve cover is provided on the vertical plate (11). A clamping mechanism (3) for fixing the valve cover to the bottom plate (1) is provided on the other side of the top of the bottom plate (1). At the same time, an auxiliary support mechanism (4) that contacts the edge of the valve cover and provides auxiliary support for the valve cover is provided between the clamping mechanism (3) and the vertical plate (11) at the top of the bottom plate (1).

2. The valve cover milling and drilling fixture for an unmanned diesel outboard motor according to claim 1, characterized in that: The positioning mechanism (2) includes a pin seat (21) disposed on the side of the upright plate (11) facing the pressing mechanism (3), and a positioning pin adapted to the camshaft hole (6) of the valve cover is disposed on the side of the pin seat (21) away from the upright plate (11).

3. The valve cover milling and drilling fixture for an unmanned diesel outboard motor according to claim 2, characterized in that: The positioning pin includes a cylindrical pin (22) and a diamond pin (23) disposed on the pin seat (21).

4. The valve cover milling and drilling fixture for an unmanned diesel outboard motor according to claim 1, characterized in that: The pressing mechanism (3) includes a first pressing plate (31) disposed above the base plate (1) and movable up and down corresponding to the sensor hole (5) of the valve cover, and a second pressing plate (32) disposed on one side of the first pressing plate (31) and movable along the length direction of the base plate (1).

5. The valve cover milling and drilling fixture for an unmanned diesel outboard motor according to claim 1, characterized in that: The auxiliary support mechanism (4) includes multiple auxiliary supports (41) disposed between the pressing mechanism (3) and the vertical plate (11), and the multiple auxiliary supports (41) are symmetrically distributed on the front and rear sides of the valve cover.

6. A milling and drilling fixture for valve cover of an unmanned diesel outboard engine according to any one of claims 1-5, characterized in that: The bottom of the base plate (1) is provided with a T-slot nut (12) that is compatible with the T-slot of the machining center worktable.

7. A milling and drilling fixture for valve cover of an unmanned diesel outboard engine according to any one of claims 1-5, characterized in that: The top of the base plate (1) is provided with multiple lifting rings (13).

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