Drilling device for machining water hole in cylinder hole of diesel engine body

Abstract

The utility model provides a drilling device for machining a water hole in a diesel engine body cylinder hole, and belongs to the technical field of machining. Comprising a right-angle electric hand drill and a drilling jig, the drilling jig is used for being matched with a hole opening of an air cylinder hole in a machine body, the drilling jig is hollow, and the right-angle electric hand drill is inversely arranged in an inner cavity of the drilling jig and connected with the drilling jig through a sliding way structure to achieve horizontal sliding of the right-angle electric hand drill. An electric drill driving structure used for driving the right-angle electric hand drill to move horizontally is arranged on the drill jig, a drill bit is connected to the output end of the lower portion of the right-angle electric hand drill, and an installation positioning pin is arranged on the drill jig and used for being matched with a positioning hole in the hole face of the air cylinder hole to guarantee that the drill bit is aligned with the machining position of a water hole in the air cylinder hole. According to the drilling device, the water hole in the machine body cylinder can be machined by positioning the air cylinder hole and the positioning hole in the plane of the air cylinder hole and rotating the handle, the influence of the operation level of a bench worker is avoided, drilling does not deflect, a drill bit is not broken, operation is easy, efficiency is high, and rapid and high-quality machining of the water hole in the machine body air cylinder is achieved.

Description

Technical Field

[0001] The utility model belongs to the technical field of machining, and particularly relates to a drilling device for machining water holes in the cylinder holes of a diesel engine body. Background Art

[0002] On the body 1 of a certain type of medium-high speed and high-power marine diesel engine (as shown in Figure 6 , 7 ), the cylinder holes 3 and the cooling water cavity 4 are connected through water holes 2 with a diameter of Φ5mm. The water holes 2 are 60mm deep, and the cooling water passes through the cooling water cavity 4 to cool the cylinder liner. When machining the water holes 2, due to the limitation of the machining space, it can only be machined from the inside of the cylinder holes 3. The water holes 2 are small and deep, making it very difficult to machine.

[0003] When currently machining the water holes in the cylinder holes of the diesel engine body, the process of using a numerically controlled gantry boring and milling machine equipped with a non-standard accessory power head 9 to drill the water holes with a drill bit (as shown in Figure 8 ) is adopted. Due to the limitation of the limited and narrow space inside the cylinder holes, the size of the non-standard special accessory power head is very small, and the output power is only 4Kw, while the output power of the gantry boring and milling machine is 80Kw, which is like using a big horse to pull a small cart, resulting in a large waste; when using a gantry boring and milling machine equipped with a non-standard accessory power head to machine a Φ5mm deep 60mm water hole, it is necessary to manually replace the non-standard accessory head and the drill bit during operation, and the auxiliary preparation time is long, and it occupies the production capacity of high-value-added equipment, with high costs, time-consuming and laborious, and low efficiency, which is uneconomical. Therefore, it is necessary to make improvements. Summary of the Utility Model

[0004] The technical problem solved by the utility model: provides a drilling device for machining water holes in the cylinder holes of a diesel engine body. The purpose of the utility model is to solve the problems of low efficiency and resource waste in machining water holes in the cylinder of the diesel engine body by the existing gantry boring and milling machine.

[0005] To achieve the above purpose, the technical solution adopted by the utility model is:

[0006] A drilling device for machining water holes in the cylinder holes of a diesel engine body, the drilling device includes a right-angle electric drill and a drill jig. The drill jig is used to adapt to the orifice of the cylinder hole on the body. The inside of the drill jig is hollow. The right-angle electric drill is inverted in the inner cavity of the drill jig. The right-angle electric drill is connected to the drill jig through a slideway structure to realize the horizontal sliding of the right-angle electric drill. The drill jig is provided with an electric drill driving structure for driving the horizontal movement of the right-angle electric drill. A drill bit is connected to the lower output of the right-angle electric drill. The drill jig is provided with an installation positioning pin, and the installation positioning pin is used to cooperate with the positioning hole on the hole surface of the cylinder hole to ensure that the drill bit is aligned with the machining position of the water hole in the cylinder hole.

[0007] For further limitation of the above solution, the drill jig is of a sleeve-like structure, and the right-angle electric drill is placed inside the sleeve; the outer surface of the drill jig is a stepped cylindrical surface that is adapted to the orifice of the cylinder hole on the fuselage body and has a larger diameter at the upper part and a smaller diameter at the lower part.

[0008] For further limitation of the above solution, the slideway structure for realizing the horizontal sliding of the right-angle electric drill includes an electric drill fixing seat, a linear guide rail, and a slider. The electric drill fixing seat is fixedly connected to the right-angle electric drill. Slide block connecting plates are fixedly arranged on both sides of the electric drill fixing seat. There are two sliders, which are respectively fixed to the lower parts of the two slide block connecting plates. There are two linear guide rails, which are respectively fixed on the upper surface of the drill jig and are symmetric about the center of the drill jig. The two sliders are respectively slidably adapted to the two linear guide rails.

[0009] For further limitation of the above solution, the electric drill fixing seat is fixedly connected to the right-angle electric drill through electric drill fixing bolts, the slider is fixedly connected to the slide block connecting plate through slider fixing bolts, and the linear guide rail is fixedly connected to the drill jig through guide rail fixing bolts.

[0010] For further limitation of the above solution, the electric drill driving structure for driving the right-angle electric drill to move horizontally includes a lead screw. A lead screw mounting seat is fixed on the upper surface of the drill jig. The lead screw is rotationally supported on the lead screw mounting seat, and one end of the lead screw is movably connected to the right-angle electric drill.

[0011] For further limitation of the above solution, a handle is fixedly connected to the rear end of the lead screw through a fixing screw. The lead screw mounting seat is fixedly connected to the drill jig through mounting seat fixing bolts; a connecting sleeve is provided on the right-angle electric drill. The end of the lead screw is movably inserted into the connecting sleeve, and is cooperated with a limit pin provided on the connecting sleeve and a limit ring groove made on the end of the lead screw to limit the lead screw to be able to rotate but not axially move in the connecting sleeve.

[0012] For further limitation of the above solution, a hole for the drill bit to pass through is provided at the position on the drill jig opposite to the drill bit, and a drill bushing is provided in the hole.

[0013] For further limitation of the above solution, a handgrip is provided at the upper part of the drill jig.

[0014] Advantages of the present utility model compared with the prior art:

[0015] 1. This solution designs a drilling device. The positioning of the drilling device on the fuselage is achieved through the precision-machined cylinder holes on the fuselage body and the positioning holes on the cylinder hole plane. The fitter shakes the handle to make the right-angle electric drill move linearly, and the drill bit determines the position of the water hole in the cylinder through the drill bushing for processing. This method is not affected by the fitter's operation level. When drilling, the drill bit does not swing. Only by rotating the handle can the processing of the water hole in the fuselage cylinder be completed. The drilling is not skewed and the drill bit is not broken. The operation is simple and efficient, and the drilling quality is reliable. It can achieve the rapid and high-quality processing of the water hole in the fuselage cylinder;

[0016] 2. This solution can completely replace the original process method of using a gantry boring and milling machine equipped with a special accessory power head to drill the water holes of the cylinder hole, save energy, and further release the processing capacity of the high-value-added equipment, the gantry boring and milling machine;

[0017] 3. Through on-site debugging and tracking, it takes 18 minutes to process the water holes in the cylinder of a certain type of diesel engine fuselage with this drilling device, while it takes about 30 minutes to process this group of water holes using the existing gantry boring and milling machine equipped with a special accessory power head, with significant efficiency improvement;

[0018] 4. The drilling device of this solution processes the water holes in the cylinder of the diesel engine fuselage. The process method is simple, overcomes the problems of the traditional fitter's drilling bit swinging, easy to produce skew and broken drill bits, etc. The processed holes have high quality and can replace the method of using a gantry boring and milling machine equipped with a special accessory power head to process the water holes. The processing procedures of this device are concentrated, the design is reasonable, the operation is simple, the quality and efficiency are high, it can achieve the engineering and high-efficiency mass production processing of the fuselage of marine medium and high-speed large-power diesel engines, is convenient for popularization and use, and has a wide application field and good popularization value. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 is the main structural view of a drilling device for water holes in the cylinder hole of a fuselage provided by the present utility model;

[0020] Figure 2 is for the present utility model Figure 1 the sectional view taken along the line A-A therein;

[0021] Figure 3 is the top structural view of a drilling device for water holes in the cylinder hole of a fuselage provided by the present utility model;

[0022] Figure 4 is the three-dimensional structural diagram of a drilling device for water holes in the cylinder hole of a fuselage provided by the present utility model;

[0023] Figure 5 is the usage state diagram of a drilling device for water holes in the cylinder hole of a fuselage provided by the present utility model;

[0024] Figure 6 is the structural diagram of a certain diesel engine fuselage in the prior art;

[0025] Figure 7 is Figure 6 the sectional view taken along line B-B in

[0026] Figure 8 a schematic view of machining a water hole in a cylinder hole of a fuselage using an accessory power head in the prior art. Specific Embodiments

[0027] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0028] It should be noted that in this article, the terms "include", "comprise" or any other variant thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements not only includes those elements but also includes other elements not explicitly listed, or further includes elements inherent to such a process, method, article or device. Without further limitation, an element defined by the statement "including one..." does not exclude the existence of additional identical elements in the process, method, article or device including the said element.

[0029] Please refer to Figure 1-8 for a detailed description of the embodiments of the present invention.

[0030] Embodiment: Refer to Figure 1-4 As shown, a drilling device for machining a water hole in a cylinder hole of a diesel engine fuselage. The drilling device 7 includes a right-angle electric drill 7-1 and a drill jig 7-7. The drill jig 7-7 is adapted to the orifice of the cylinder hole 3 on the fuselage body 1. The interior of the drill jig 7-7 is hollow. The right-angle electric drill 7-1 is inverted in the inner cavity of the drill jig 7-7. The right-angle electric drill 7-1 is connected to the drill jig 7-7 through a slideway structure to achieve horizontal sliding of the right-angle electric drill 7-1. The drill jig 7-7 is provided with an electric drill driving structure for driving the right-angle electric drill 7-1 to move horizontally. A drill bit 6 is connected to the lower output of the right-angle electric drill 7-1. The drill jig 7-7 is provided with a mounting positioning pin 7-6. The mounting positioning pin 7-6 is used to cooperate with the positioning hole 5 on the hole surface of the cylinder hole 3 to ensure that the drill bit 6 is aligned with the machining position of the water hole 2 in the cylinder hole 3.

[0031] In a specific embodiment: The drill jig 7-7 is of a sleeve-like structure, and the right-angle electric drill 7-1 is placed inside the sleeve; the outer surface of the drill jig 7-7 is a stepped cylindrical surface that fits the orifice of the cylinder hole 3 on the fuselage body 1 and has a larger diameter at the upper part and a smaller diameter at the lower part.

[0032] In a specific embodiment: The slideway structure for realizing the horizontal sliding of the right-angle electric drill 7-1 includes a drill fixed seat 7-3, linear guide rails 7-10 and sliders 7-14. The drill fixed seat 7-3 is fixedly connected to the right-angle electric drill 7-1. Slide block connecting plates 7-16 are fixedly arranged on both sides of the drill fixed seat 7-3. There are two sliders 7-14, which are respectively fixed to the lower parts of the two slide block connecting plates 7-16. There are two linear guide rails 7-10, which are respectively fixed on the upper surface of the drill jig 7-7 and are symmetric about the center of the drill jig 7-7. The two sliders 7-14 are respectively slidably adapted to the two linear guide rails 7-10.

[0033] Specifically, the drill fixed seat 7-3 is fixedly connected to the right-angle electric drill 7-1 through a drill fixing bolt 7-2. The right-angle electric drill 7-1 is fixed to the drill fixed seat 7-3 through two bolts 7-2, ensuring that the trajectory of the right-angle electric drill 7-1 during drilling moves along the linear guide rail 7-10, not affected by the fitter's operating level. The drill bit does not swing during drilling, and no drilling deviation problem will occur. The slider 7-14 is fixedly connected to the slide block connecting plate 7-16 through a slider fixing bolt 7-15, and the linear guide rail 7-10 is fixedly connected to the drill jig 7-7 through a guide rail fixing bolt 7-9.

[0034] In a specific embodiment: The electric drill driving structure for driving the right-angle electric drill 7-1 to move horizontally includes a lead screw 7-13. A lead screw mounting seat 7-5 is fixed on the upper surface of the drill jig 7-7. The lead screw 7-13 is rotatably supported on the lead screw mounting seat 7-5, and one end of the lead screw 7-13 is movably connected to the right-angle electric drill 7-1.

[0035] Specifically, a handle 8 is fixedly connected to the rear end of the lead screw 7-13 through a fixing screw 7-12. The lead screw mounting seat 7-5 is fixedly connected to the drill jig 7-7 through a mounting seat fixing bolt 7-11; a connecting sleeve is provided on the right-angle electric drill 7-1. The end of the lead screw 7-13 is movably inserted into the connecting sleeve, and is restricted by a limit pin arranged on the connecting sleeve and a limit ring groove made on the end of the lead screw 7-13 to enable the lead screw 7-13 to rotate in the connecting sleeve but not move axially.

[0036] In a specific embodiment: A hole for the drill bit 6 to pass through is provided at the position on the drill jig 7-7 opposite to the drill bit 6, and a drill bushing 7-8 is arranged in the hole. Designing a drill bushing 7-8 on the drilling device ensures accurate drilling positions.

[0037] In a specific embodiment: a handle 7-4 is provided on the upper part of the jig 7-7.

[0038] In the above structure, with the precision-machined cylinder hole 3 and the positioning hole 5 on the cylinder hole surface as the positioning, the fitter shakes the handle 8 to adjust the position of the drill bit, and starts the right-angle electric drill to drive the drill bit 6 to machine the water hole 2 in the body cylinder, replacing the original non-standard accessory power head of the gantry boring and milling machine to machine the water hole in the body cylinder hole, solving the problems of low efficiency and resource waste in machining the water hole in the body cylinder by the gantry boring and milling machine. The processes of the fitter drilling the water hole in the body cylinder and the fitter cleaning the body are combined and executed, with more concentrated processes and higher efficiency. This process method is simple, easy to operate, low in cost, high in production efficiency, and convenient for popularization and use.

[0039] In this embodiment, the total weight of the in-cylinder water hole drilling device for the body of a certain type of medium-speed and high-power marine diesel engine is 22.7 Kg, and it can be conveniently operated by one fitter without the help of other tool equipment.

[0040] Based on the drilling device, a processing technology method for the water hole in the body cylinder is provided: precision milling the plane of the body cylinder hole, boring the cylinder hole 3, drilling the positioning hole 5 on the cylinder hole surface (gantry boring and milling machine) → drilling the water hole 2 in the cylinder (fitter).

[0041] That is, first precision mill the plane of the body cylinder hole, precision bore the cylinder hole 3, and drill the positioning hole on the cylinder hole surface 5 to serve as the positioning reference for the drilling device 7, and then the right-angle electric drill 7-1 and the drill bit 6 process the water hole 2 along the two linear guide rails 7-10 and the fixed drill bushing 7-8 on the drilling device 7.

[0042] After the body is finish-machined, in the final cleaning process, arrange for the fitter to use the drilling device 7 to machine the water hole 2 instead of using the high-value-added gantry boring and milling machine to machine the water hole 2. There is no need to add additional processes, the processes are concentrated, the production efficiency is high, the operation is convenient, and the cost is low, overcoming the deficiencies of the original plan.

[0043] Among them, the specific use steps of the drilling device 7: Refer to Figure 5 as shown

[0044] Step 1: Install the drill bit 6 on the right-angle electric drill 7-1, fix the right-angle electric drill 7-1 on the electric drill fixing seat 7-3, and shake the handle 8 to adjust the drill tip of the drill bit 6 not to protrude from the drill bushing 7-8. Note: After the drill tip of the drill bit 6 protrudes from the drill bushing 7-8, the protruding part may interfere with the body cylinder hole when installing the drilling device 7.

[0045] Step 2: The fitter grabs the handle 7-4 and puts the drilling device 7 into the cylinder hole 3 on the body main body 1, and installs the positioning pin 7-6 into the positioning hole 5 on the cylinder hole surface. The positioning of the drilling device 7 is completed.

[0046] Step 3: The fitter turns the handle 8 to drive the lead screw 7-13 to push the electric drill fixing seat 7-3 to move along the linear guide rail 7-10. The right-angle electric drill 7-1 drives the drill bit 6 to drill the water hole 2 in the cylinder through the drill bushing 7-8.

[0047] Step 4: After drilling, turn the handle 8 to retract the drill bit 6.

[0048] Step 5: The fitter grabs the handle 7-4 and removes the drilling device 7 from the fuselage, completing the machining of the water hole in one cylinder hole of the fuselage. Place it in the next cylinder hole and repeat Step 2, Step 3, and Step 4 to machine the water holes in other cylinder holes.

[0049] The utility model solves the problem of drill bit deflection during drilling with a linear guide rail. When drilling with a right-angle electric drill, it is usually affected by the fitter's operation level. During drilling, the drill bit sways, easily causing problems such as drill bit deflection and broken drill bits. This drilling device 7 fixes the right-angle electric drill 7-1 on the electric drill fixing seat 7-3. The fitter shakes the handle 8 to push the right-angle electric drill 7-1 to move along the linear guide rail 7-10 for drilling. During drilling, the drill bit does not sway and is not affected by the fitter's operation level, thus ensuring the drilling quality and solving the problem of drill bit deflection.

[0050] The utility model changes the original machining method of the water holes in the cylinder of the fuselage, replacing the original machining process of using a gantry boring and milling machine equipped with a special attachment milling head to machine the water holes in the cylinder with the fitter using a drilling device to machine the water holes in the cylinder of the fuselage. This releases the production capacity of the high-value-added gantry boring and milling machine. When cleaning the fuselage, the fitter machines the water holes in the cylinder. The processes are concentrated, the method is simple, easy to operate, and efficient.

[0051] For those skilled in the art, it is obvious that the present utility model is not limited to the details of the above exemplary embodiments, and without departing from the spirit or basic characteristics of the present utility model, the present utility model can be implemented in other specific forms. Therefore, in any aspect, the embodiments should be regarded as exemplary and non-limiting. The scope of the present utility model is defined by the appended claims rather than the above description. Therefore, all changes falling within the meaning and scope of the equivalent elements of the claims are intended to be included in the present utility model. Any reference signs in the claims should not be regarded as limiting the claimed rights.

[0052] In addition, it should be understood that although this specification is described according to the embodiments, not every embodiment only contains an independent technical solution. This narrative way of the specification is only for clarity. Those skilled in the art should regard the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. A drilling device for machining water holes in the cylinder holes of a diesel engine body, characterized in that: The drilling device (7) includes a right-angle electric drill (7-1) and a drill die (7-7). The drill die (7-7) is used to fit with the orifice of the cylinder hole (3) on the fuselage body (1). The inside of the drill die (7-7) is hollow. The right-angle electric drill (7-1) is inverted in the inner cavity of the drill die (7-7). The right-angle electric drill (7-1) is connected to the drill die (7-7) through a slideway structure to realize the horizontal sliding of the right-angle electric drill (7-1). The drill die (7-7) is provided with an electric drill driving structure for driving the right-angle electric drill (7-1) to move horizontally. A drill bit (6) is connected to the lower output of the right-angle electric drill (7-1). The drill die (7-7) is provided with an installation positioning pin (7-6), and the installation positioning pin (7-6) is used to cooperate with the positioning hole (5) on the hole surface of the cylinder hole (3) to ensure that the drill bit (6) is aligned with the processing position of the water hole (2) in the cylinder hole (3).

2. The drilling device for machining the water hole in the cylinder hole of the diesel engine body according to claim 1, characterized in that: The drill die (7-7) is of a sleeve-shaped structure, and the right-angle electric drill (7-1) is placed inside the sleeve. The outer surface of the drill die (7-7) is a stepped cylindrical surface that fits with the orifice of the cylinder hole (3) on the fuselage body (1) and has a larger diameter at the upper part and a smaller diameter at the lower part.

3. The drilling device for machining water holes in the cylinder holes of a diesel engine body according to claim 1, characterized in that: The slideway structure for realizing the horizontal sliding of the right-angle electric drill (7-1) includes an electric drill fixing seat (7-3), linear guide rails (7-10) and sliders (7-14). The electric drill fixing seat (7-3) is fixedly connected to the right-angle electric drill (7-1). Slide block connecting plates (7-16) are fixedly arranged on both sides of the electric drill fixing seat (7-3). There are two sliders (7-14) which are respectively fixed to the lower parts of the two slide block connecting plates (7-16). There are two linear guide rails (7-10) which are respectively fixed on the upper surface of the drill die (7-7) and are symmetric about the center of the drill die (7-7). The two sliders (7-14) are respectively slidably adapted to the two linear guide rails (7-10).

4. The drilling device for machining water holes in the cylinder holes of a diesel engine body according to claim 3, characterized in that: The electric drill fixing seat (7-3) is fixedly connected to the right-angle electric drill (7-1) through an electric drill fixing bolt (7-2). The slider (7-14) is fixedly connected to the slide block connecting plate (7-16) through a slider fixing bolt (7-15). The linear guide rail (7-10) is fixedly connected to the drill die (7-7) through a guide rail fixing bolt (7-9).

5. The drilling device for machining the water hole in the cylinder hole of the diesel engine body according to claim 1, wherein: The electric drill driving structure for driving the right-angle electric drill (7-1) to move horizontally includes a lead screw (7-13). A lead screw mounting seat (7-5) is fixedly arranged on the upper surface of the drill die (7-7). The lead screw (7-13) is rotationally supported on the lead screw mounting seat (7-5). One end of the lead screw (7-13) is movably connected to the right-angle electric drill (7-1).

6. The drilling device for machining the water hole in the cylinder hole of the diesel engine body according to claim 5, characterized in that: The rear end of the lead screw (7-13) is fixedly connected with a handle (8) by a fixing screw (7-12), and the lead screw mounting seat (7-5) is fixedly connected with the drill die (7-7) by a mounting seat fixing bolt (7-11); a connecting sleeve is provided on the right-angle electric drill (7-1), and the end of the lead screw (7-13) is movably inserted into the connecting sleeve, and is cooperated with a limit pin provided on the connecting sleeve and a limit ring groove formed on the end of the lead screw (7-13) to limit the lead screw (7-13) to be rotatable but not axially movable in the connecting sleeve.

7. The drilling device for machining the water holes in the cylinder holes of a diesel engine body according to claim 1, characterized in that: A hole for the drill bit (6) to pass through is provided at the position of the drill die (7-7) opposite to the drill bit (6), and a drill bushing (7-8) is provided in the hole.

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