A processing tool for a large-power diesel engine cylinder cover inclined hole

Abstract

The utility model provides a kind of processing frock of marine high-power diesel engine cylinder cover inclined hole, it is related to marine diesel engine parts processing technical field, including base, backplate, positioning plate, cushion block, drill jig plate body, pin shaft and drill jig cover;The backplate and the cushion block are installed on the base top, the positioning plate is fixed on the backplate, the drill jig plate body is positioned fastening by the pin shaft, the drill jig cover is set on the drill jig plate body.The utility model solves the problem that different frock needs to be called when processing center processes cylinder cover inclined hole, there is the problem of repeated up and down activity, not only increase production cost, also reduce production efficiency, also difficult to guarantee the processing accuracy of inclined hole, it can lead to inclined hole drilling deviation due to angle problem, affect the cooling effect of cylinder cover.

Description

Technical Field

[0001] This utility model belongs to the field of marine diesel engine parts processing technology, and more specifically, it relates to a machining tooling for the oblique hole of the cylinder head of a high-power marine diesel engine. Background Technology

[0002] Marine diesel engines are the heart of a ship's operation, and the cylinder head is a crucial component of a marine diesel engine. The machining precision of the cylinder head significantly affects the airtightness of various flowing media such as fuel, gas, and cooling water within the diesel engine. The bore system in a marine diesel engine cylinder head is complex, involving various angles and depths. It is difficult to machine using on-site vertical or horizontal equipment, requiring tooling to adjust the angles to facilitate the machining of the cylinder head bores.

[0003] Based on existing technology, it has been found that different tooling is required when machining cylinder head oblique holes in a machining center, resulting in repeated up-and-down movements. This not only increases production costs and reduces production efficiency, but also makes it difficult to guarantee the machining accuracy of the oblique holes. The oblique holes may be drilled off-center due to angle issues, affecting the cooling effect of the cylinder head. Utility Model Content

[0004] To solve the above-mentioned technical problems, this utility model provides a machining tooling for the oblique hole of the cylinder head of a high-power marine diesel engine, so as to solve the problems mentioned in the background art.

[0005] This utility model discloses a machining fixture for the oblique hole in the cylinder head of a high-power marine diesel engine, which is achieved by the following specific technical means: A machining fixture for oblique holes in the cylinder head of a high-power marine diesel engine includes a base, a back plate, a positioning plate, a pad, a drill template body, a pin, and a drill sleeve. The back plate and the pad are mounted on the base, the positioning plate is fixed to the back plate, the cylinder head is placed on the positioning plate and the pad, the drill template body is positioned and fastened by the pin, and the drill sleeve is disposed on the drill template body.

[0006] Furthermore, the base and the back plate are detachably connected by bolts. The bolts pass through the pre-set through holes at the bottom of the back plate and the corresponding threaded holes on the base. The back plate is fixed to the upper surface of the base by tightening the bolts.

[0007] Furthermore, the base and the pad are connected by bolts. The bottom of the pad is provided with a mounting hole, and the base is provided with a screw hole that matches the mounting hole. The bolt passes through the mounting hole and is screwed into the screw hole to fix the pad on the base.

[0008] Furthermore, the positioning plate and the back plate are fixedly connected, with one side of the positioning plate fitting against the side of the back plate, and the two are connected as one unit by welding, with the welding points evenly distributed along the fitting edge.

[0009] Furthermore, the drill template body and the pin are connected in a mating manner. The drill template body is provided with a pin hole, through which the pin passes. One end of the pin engages with the positioning groove on the cylinder head to achieve positioning of the drill template body.

[0010] Furthermore, the drill jig sleeve and the drill template body are embedded in each other. The drill template body is provided with mounting holes that match the outer contour of the drill jig sleeve. The drill jig sleeve is embedded in the mounting holes, and there is no relative sliding between the two.

[0011] Furthermore, the cylinder head is placed in conjunction with the positioning plate and the pad, with one bottom side of the cylinder head fitting against the upper surface of the positioning plate and the other bottom side fitting against the upper surface of the pad. The positioning plate and the pad together provide support and positioning for the cylinder head.

[0012] Compared with the prior art, the present invention has the following beneficial effects: 1. Reduce production costs and improve production efficiency: There is no need to call different toolings and repeatedly load and unload workpieces in the machining center. The workpieces can be processed directly on the vertical drilling machine using this tooling, which reduces the time and cost of tooling changes and workpiece loading and unloading, and improves production efficiency.

[0013] 2. Ensure the accuracy of inclined hole machining: Through the positioning guidance of tooling (such as the drill template being positioned by a pin and the drill bit being guided by a drill jig), the angle of the inclined hole can be precisely controlled, avoiding deviation of the inclined hole due to angle deviation, and ensuring the machining quality of the inclined hole.

[0014] 3. Ensure cylinder head cooling effect: Because the machining accuracy of the oblique hole is guaranteed, the normal function of the internal cooling channel of the cylinder head is avoided due to angle issues, thus ensuring the cooling performance of the cylinder head.

[0015] 4. Easy to use, time-saving and labor-saving: The tooling is easy to install and operate, without the need for complicated debugging processes, and can be put into production quickly, reducing the complexity and labor intensity of manual operation. Attached Figure Description

[0016] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on the structures shown in these drawings without creative effort.

[0017] Figure 1 This is a schematic diagram of the structure of this utility model.

[0018] In the diagram, the correspondence between component names and drawing numbers is as follows: 1. Base; 2. Back plate; 3. Positioning plate; 4. Cylinder head; 5. Pad block; 6. Drill template body; 7. Pin shaft; 8. Drill template sleeve. Detailed Implementation

[0019] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0020] It should be noted that all directional indicators (such as up, down, left, right, front, back, etc.) in this utility model embodiment are only used to explain the relative positional relationship and movement of each component in a certain specific posture (as shown in the figure). If the specific posture changes, the directional indicator will also change accordingly.

[0021] Furthermore, in this utility model, descriptions involving "first," "second," etc., are for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined with "first" or "second" may explicitly or implicitly include at least one of that feature. Additionally, the technical solutions of the various embodiments can be combined with each other, but only on the basis of being achievable by those skilled in the art. When the combination of technical solutions is contradictory or impossible to implement, such a combination of technical solutions should be considered non-existent and not within the scope of protection claimed by this utility model. Example

[0022] As attached Figure 1 To be continued Figure 1 As shown: This utility model provides a machining fixture for oblique holes in the cylinder head of a marine high-power diesel engine, including a base 1, a back plate 2, a positioning plate 3, a pad 5, a drill template body 6, a pin 7, and a drill jig sleeve 8; the back plate 2 and the pad 5 are installed on the base 1, the positioning plate 3 is fixed on the back plate 2, the cylinder head 4 is placed on the positioning plate 3 and the pad 5, the drill template body 6 is positioned and fastened by the pin 7, and the drill jig sleeve 8 is set on the drill template body 6.

[0023] The base 1 and the back plate 2 are detachably connected by bolts. The bolts pass through the pre-set through holes at the bottom of the back plate 2 and the corresponding threaded holes on the base 1. The back plate 2 is fixed to the upper surface of the base 1 by tightening the bolts.

[0024] The base 1 and the pad 5 are connected by bolts. The bottom of the pad 5 is provided with a mounting hole, and the base 1 is provided with a screw hole that matches the mounting hole. The bolt passes through the mounting hole and is screwed into the screw hole to fix the pad 5 on the base 1.

[0025] The positioning plate 3 and the back plate 2 are fixedly connected. One side of the positioning plate 3 is attached to the side of the back plate 2, and the two are connected as one by welding. The welding points are evenly distributed along the attached edge.

[0026] The drill template body 6 and the pin 7 are connected in a mating manner. The drill template body 6 is provided with a pin hole, through which the pin 7 passes. One end of the pin 7 is engaged with the positioning groove on the cylinder head 4 to achieve the positioning of the drill template body 6.

[0027] The drill jig sleeve 8 and the drill template body 6 are embedded in each other. The drill template body 6 is provided with mounting holes that match the outer contour of the drill jig sleeve 8. The drill jig sleeve 8 is embedded in the mounting holes, and there is no relative sliding between the two.

[0028] The cylinder head 4 is placed in conjunction with the positioning plate 3 and the pad 5. One bottom side of the cylinder head 4 is attached to the upper surface of the positioning plate 3, and the other bottom side is attached to the upper surface of the pad 5. The positioning plate 3 and the pad 5 together provide support and positioning for the cylinder head 4.

[0029] The specific usage and function of this embodiment are as follows: In this invention, a back plate 2 and a pad 5 are bolted onto the base 1. A positioning plate 3 is fixed to the back plate 2. The cylinder head 4 is placed on the positioning plate 3 and the pad 5. The drill template body 6 is positioned and fastened to the cylinder head 4 by a pin 7. The drill bit is guided by the drill template sleeve 8 to perform drilling, thereby completing the machining of the inclined hole in the cylinder head 4. This process, through the cooperation of various components, achieves precise machining of the inclined hole on a vertical drilling machine. The structural design of the tooling allows for angle conversion, solving the machining difficulties caused by angle issues in traditional machining. At the same time, positioning and guidance ensure machining accuracy.

[0030] Of course, the above description is not intended to limit the present utility model, and the present utility model is not limited to the examples given above. Any changes, modifications, additions or substitutions made by those skilled in the art within the scope of the present utility model should also fall within the protection scope of the present utility model.

Claims

1. A machining fixture for oblique holes in the cylinder head of a high-power marine diesel engine, comprising a base (1), a back plate (2), a positioning plate (3), a pad (5), a drill template body (6), a pin (7), and a drill jig sleeve (8); characterized in that: The base (1) is equipped with the back plate (2) and the pad (5). The positioning plate (3) is fixed on the back plate (2). The cylinder head (4) is placed on the positioning plate (3) and the pad (5). The drill template body (6) is positioned and fastened by the pin (7). The drill mold sleeve (8) is set on the drill template body (6).

2. The machining fixture for the oblique hole of the cylinder head of a high-power marine diesel engine as described in claim 1, characterized in that: The base (1) and the back plate (2) are detachably connected by bolts. The bolts pass through the pre-set through hole at the bottom of the back plate (2) and the corresponding threaded hole on the base (1) in sequence. The back plate (2) is fixed to the upper surface of the base (1) by tightening the bolts.

3. The machining fixture for the oblique hole of the cylinder head of a high-power marine diesel engine as described in claim 1, characterized in that: The base (1) and the pad (5) are connected by bolts. The bottom of the pad (5) is provided with an installation hole, and the base (1) is provided with a screw hole that matches the installation hole. The bolt passes through the installation hole and is screwed into the screw hole to fix the pad (5) on the base (1).

4. The machining fixture for the oblique hole of the cylinder head of a high-power marine diesel engine as described in claim 1, characterized in that: The positioning plate (3) and the back plate (2) are fixedly connected. One side of the positioning plate (3) is attached to the side of the back plate (2), and the two are connected as one by welding. The welding points are evenly distributed along the attached edge.

5. The machining fixture for the oblique hole of the cylinder head of a high-power marine diesel engine as described in claim 1, characterized in that: The drill template body (6) and the pin (7) are connected in a mating manner. The drill template body (6) is provided with a pin hole, through which the pin (7) passes. One end of the pin (7) is engaged with the positioning groove on the cylinder head (4) to achieve the positioning of the drill template body (6).

6. The machining fixture for the oblique hole of the cylinder head of a high-power marine diesel engine as described in claim 1, characterized in that: The drill jig sleeve (8) and the drill template body (6) are embedded in each other. The drill template body (6) has a mounting hole that matches the outer contour of the drill jig sleeve (8). The drill jig sleeve (8) is embedded in the mounting hole and there is no relative sliding between the two.

7. The machining fixture for the oblique hole of the cylinder head of a high-power marine diesel engine as described in claim 1, characterized in that: The cylinder head (4) is placed in conjunction with the positioning plate (3) and the pad (5). One side of the bottom of the cylinder head (4) is attached to the upper surface of the positioning plate (3), and the other side of the bottom is attached to the upper surface of the pad (5). The positioning plate (3) and the pad (5) together support and position the cylinder head (4).

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