Device and method for safely and efficiently disassembling water plug blank cap of medium-speed engine cylinder cover

Abstract

The invention relates to the technical field of medium-speed engine cylinder cover water plug blank caps, and discloses a device for safely and efficiently disassembling a medium-speed engine cylinder cover water plug blank cap. Clamping pins are additionally arranged at the tops of the auxiliary positioning pins, main positioning pins are arranged at the top ends of the clamping pins, and mounting bolts are arranged at the top ends of the main positioning pins; the first forming cutter is composed of a forming cutter handle and a blade, and the second forming cutter is composed of a cutter handle, a forming cutter bar and a blade. According to the device for safely and efficiently disassembling the water plug blank cap of the medium-speed engine cylinder cover, after the positioning base, the first forming cutter and the second forming cutter are installed at the corresponding positions of a numerical control machine tool respectively, the cylinder cover is positioned through the main positioning pin and the auxiliary positioning pin, and four installation bolts are installed at the bolt hole positions of the cylinder cover; the first forming tool or the second forming tool confirms that the blank cap needing to be disassembled falls off, and by adopting the mode, operation is convenient.

Description

Technical Field

[0001] The invention relates to the technical field of a water plugging cover of a cylinder head of a medium-speed engine, and in particular to a device and a method for safely and efficiently removing a water plugging cover of a cylinder head of a medium-speed engine. Background Art

[0002] The medium-speed machine is an industrial equipment suitable for crushing soft and hard material nozzle materials. It is mainly used to crush waste rubber, plastic, fiber and other materials for recycling. After these materials are crushed by the medium-speed machine, they can be turned into fine particles or powder, which is convenient for subsequent processing and utilization. The medium-speed machine is usually composed of a main engine, a motor, a reducer, a seal, a feed hopper, a discharge port, etc. It uses a combination of rotating blades and fixed blades to quickly cut the material into pieces. At the same time, the medium-speed machine also has the characteristics of low noise, high efficiency and low energy consumption. It is an ideal equipment for the waste material recycling industry. The medium-speed machine cylinder head water plug is mainly used on the cylinder head of the medium-speed engine, which is in contact with the cooling water to prevent the cooling water from leaking and keep the pressure in the cylinder stable. The water plug needs to be disassembled.

[0003] A common device for safely and efficiently removing water-blocking and blinding covers of medium-speed cylinder heads. Due to the complex structure of the inner cavity of the cylinder head, in order to more effectively clean the seams and inclusions in the inner cavity, multiple process sand cleaning holes are designed at corresponding positions around the cylinder head. After the complete finishing is completed, these sand cleaning holes need to be blocked with blinding covers. Therefore, in order to ensure the sealing of the inner cavity of the cylinder head, an inner cavity pressure test is required after the blinding cover is installed. If water leakage occurs due to improper operation during the installation of the blinding cover, the blinding cover needs to be removed and reinstalled. Due to the special material of the blinding cover and the complicated installation process, manual disassembly is very time-consuming, and there is a certain probability that the cylinder head body will be damaged. For this reason, a device for safely and efficiently removing water-blocking and blinding covers of medium-speed cylinder heads is proposed. Summary of the invention

[0004] 1. Technical issues to be resolved

[0005] In view of the deficiencies in the prior art, the present invention provides a device for safely and efficiently removing a water plugging cover of a cylinder head of a medium-speed engine to solve the above-mentioned technical problems.

[0006] (II) Technical solution

[0007] To achieve the above-mentioned purpose, the present invention provides the following technical solution: a device for safely and efficiently removing a water-blocking cover of a cylinder head of a medium-speed engine, comprising:

[0008] The inner hole of the positioning base and the inner hole arranged at the top center, and the top center of the inner hole of the positioning base are all surrounded by positioning pin holes;

[0009] The auxiliary positioning pin inner hole is arranged at the top of the positioning pin hole of the positioning base inner hole, and the top of the auxiliary positioning pin inner hole is additionally provided with a clamping pin inner hole, the top of the clamping pin inner hole is provided with a main positioning pin inner hole, and the top of the main positioning pin inner hole is provided with a mounting bolt inner hole;

[0010] The inner hole of the first forming tool and the inner hole of the second forming tool, and the inner hole of the first forming tool is composed of a forming tool handle and a blade, and the inner hole of the second forming tool is composed of a tool handle, a forming tool rod and a blade, and the inner hole of the first forming tool and the inner hole of the second forming tool are both installed on the corresponding positions of the CNC machine tool. After the inner hole of the positioning base, the inner hole of the first forming tool and the inner hole of the second forming tool are respectively installed on the corresponding positions of the CNC machine tool, the cylinder head is positioned by the inner hole of the main positioning pin and the inner hole of the auxiliary positioning pin, and four mounting bolt inner holes are installed at the position of the cylinder head bolt hole, and they can be tightened lightly, and the bottom hole is drilled to destroy the bottom of the cover, the inner hole of the first forming tool or the inner hole of the second forming tool, and the cover is semi-finished bored to remove the side wall allowance of the cover, and a single boring tool is used for single boring to further remove the side wall allowance of the cover, and a flat-headed copper rod is used to gently tap the remaining part of the cover on the side wall to make the cover fall off. At this time, it is necessary to protect the side walls of the parts from being damaged. After confirming that all the blind covers to be removed have fallen off, loosen the inner holes of the four mounting bolts to remove the workpiece. This method is suitable for the removal of the blind covers of medium-speed cylinder heads. It is easy to operate and can quickly disassemble and assemble multiple blind covers at one time. It is efficient and does not require too much human intervention. When the parts are installed, they are positioned by two locating pins of the tooling, and then the locating pins and the tensioning pins are used to clamp the parts together. It is stable and reliable. The inner hole of the first forming tool and the inner hole of the second forming tool are used for two different sizes of blind covers respectively. They are semi-finishing tools. The head of the forming tool is designed to be stepped, which can increase cutting efficiency and reduce blade loss. Relying on CNC machine tools and through the compilation of fixed process flows, the CNC program can achieve automated operation, which is fast and safe.

[0011] Preferably, a slide groove is vertically opened at the bottom center of the inner hole of the positioning base, and a connecting convex plate inner hole is horizontally added at the front and rear ends of the bottom center of the inner hole of the positioning base. The connecting convex plate inner hole can be at the bottom of the inner hole of the positioning base and move along the slide groove.

[0012] Preferably, the inner center of the inner hole of the positioning base is vertically provided with a bidirectional screw inner hole, and the front and rear ends of the outer surface center of the bidirectional screw inner hole are sleeved with sliding blocks. When the inner hole of the bidirectional screw rotates in the inner cavity of the positioning base inner hole, the two sets of sliding blocks move toward each other.

[0013] Preferably, a connecting rod is longitudinally installed at the bottom center of the sliding block, and the bottom end of the connecting rod extends downward through the slide groove and is connected to the top center of the corresponding inner hole of the connecting convex plate. The sliding block drives the inner hole of the connecting convex plate to move through the corresponding connecting rod, thereby increasing or decreasing the distance between the two groups of inner holes of the connecting convex plate, so that the inner hole of the positioning base can be connected to the connection structure of the CNC machine tool through the inner hole of the connecting convex plate, and can be connected to the connecting convex grooves with different spacings on the connection structure within a certain range.

[0014] Preferably, one end of the inner hole of the bidirectional screw penetrates through the inner hole of the positioning base and extends outward, and is connected to the inner hole of the cross plate. The inner hole of the cross plate can drive the inner hole of the bidirectional screw to rotate on the outer wall of the inner hole of the positioning base and control the direction.

[0015] A method for safely and efficiently removing a water-blocked cover of a medium-speed engine cylinder head, the characteristics of which include:

[0016] Step 1: Before installation, confirm the position of the cover that needs to be removed, and modify the program coordinates of the cover that needs to be removed in the CNC program;

[0017] Step 2: Clean the cylinder head reference plane, and after the cylinder head is positioned by the main positioning pin and the auxiliary positioning pin, install four mounting bolts at the bolt hole positions of the cylinder head;

[0018] Step 3: Take the center of the large outer circle at the upper end of the cylinder head as the program reference, set the zero position, and run the CNC program to destroy the cover. The detailed sequence of this process is as follows:

[0019] 1) Drill a bottom hole to destroy the bottom of the cover.

[0020] 2) Select a forming tool or forming tool according to the size of the blind cover, perform semi-finishing boring on the blind cover, and remove the side wall allowance of the blind cover. At this time, there is about 0.5mm allowance from the hole wall.

[0021] 3) Use a single boring tool to perform single boring to further remove the side wall excess of the cover. The side wall excess after processing by the single boring tool is about 0.1mm.

[0022] Step 4: Use a flat copper rod to gently tap the remaining part of the side wall cover to make the cover fall off;

[0023] Step 5: After confirming that all the blind covers to be removed have fallen off, loosen the four mounting bolts and remove the workpiece.

[0024] Step 6: Blow out with cold air to ensure that all residual materials in the inner cavity of the part have been blown out.

[0025] Step 7: Clean the parts to the required cleanliness, reinstall the cover according to the process and conduct pressure test.

[0026] (III) Beneficial effects

[0027] Compared with the prior art, the present invention provides a device for safely and efficiently removing the water plugging cover of the cylinder head of a medium-speed engine, which has the following beneficial effects:

[0028] 1. The device for safely and efficiently removing the water-blocked cover of the cylinder head of a medium-speed engine is provided by first installing the positioning base, the first forming tool and the second forming tool on the corresponding positions of the CNC machine tool respectively, and then the cylinder head is positioned by the main positioning pin and the auxiliary positioning pin, and then four mounting bolts are installed at the bolt hole positions of the cylinder head, and they can be lightly tightened, and a bottom hole is drilled to destroy the bottom of the cover, and the first forming tool or the second forming tool is used to semi-finish boring the cover to remove the side wall excess of the cover, and a single boring tool is used to perform single boring to further remove the side wall excess of the cover, and a flat-head copper rod is used to gently tap the remaining part of the cover on the side wall to make the cover fall off. At this time, it is necessary to protect the side walls of the parts from being damaged. After confirming that all the blind covers to be removed have fallen off, loosen the four mounting bolts and the workpiece can be removed. This method is suitable for the removal of the blind covers of medium-speed cylinder heads. It is easy to operate and can quickly disassemble and assemble multiple blind covers at one time. It is efficient and does not require too much human intervention. When the parts are installed, they are positioned by two locating pins of the tooling, and then the parts are clamped together by the locating pins and the tensioning pins. It is stable and reliable. The first forming tool and the second forming tool are used for two different sizes of blind covers respectively. They are semi-finishing tools. The head of the forming tool is designed to be stepped, which can increase cutting efficiency and reduce blade loss. Relying on CNC machine tools and through the compilation of fixed process flows, the CNC program can achieve automated operation, which is fast and safe. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0030] Figure 2 This is a schematic diagram of the internal structure of the positioning base of the present invention;

[0031] Figure 3 A schematic diagram of the connecting convex plate and its connecting structure of the present invention;

[0032] Figure 4 It is a schematic diagram of the structure of the first forming tool of the present invention;

[0033] Figure 5 It is a schematic diagram of the structure of the second forming tool of the present invention.

[0034] In the figure: 1. positioning base; 2. main positioning pin; 3. auxiliary positioning pin; 4. clamping pin; 5. mounting bolt; 6. connecting convex plate; 7. bidirectional lead screw; 8. cross swivel plate; 9. first forming tool; 10. second forming tool. DETAILED DESCRIPTION

[0035] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0036] The present invention provides a technical solution, a device for safely and efficiently removing the water plugging cover of the cylinder head of a medium-speed engine, comprising: Figure 1 , a positioning base 1, and an inner hole arranged at the top center, and positioning pin holes are opened around the top center of the positioning base 1;

[0037] Auxiliary positioning pins 3 are arranged at the top of the positioning pin holes of the positioning base 1, and the tops of the auxiliary positioning pins 3 are provided with clamping pins 4, the tops of the clamping pins 4 are provided with main positioning pins 2, and the tops of the main positioning pins 2 are provided with mounting bolts 5;

[0038] See also Figure 4 and 5, the first forming tool 9 and the second forming tool 10, and the first forming tool 9 is composed of a forming tool handle and a blade, and the second forming tool 10 is composed of a tool handle, a forming tool rod and a blade, and the first forming tool 9 and the second forming tool 10 are installed on the corresponding positions of the CNC machine tool. After the positioning base 1, the first forming tool 9 and the second forming tool 10 are respectively installed on the corresponding positions of the CNC machine tool, the cylinder head is positioned by the main positioning pin 2 and the auxiliary positioning pin 3, and four mounting bolts 5 are installed at the bolt hole position of the cylinder head, and they can be tightened lightly, and the bottom hole is drilled to destroy the bottom of the cover. The first forming tool 9 or the second forming tool 10 is used to semi-finish boring the cover to remove the side wall margin of the cover, and a single boring tool is used for single boring to further remove the side wall margin of the cover, and a flat-headed copper rod is used to gently tap the remaining part of the cover on the side wall to make the cover fall off. At this time, it is necessary to protect the side walls of the parts from being damaged. After confirming that all the blind covers to be removed have fallen off, loosen the four mounting bolts 5 and the workpiece can be removed. This method is suitable for the removal of the blind covers of medium-speed cylinder heads. It is easy to operate and can quickly disassemble and assemble multiple blind covers at one time. It is efficient and does not require too much human intervention. When the parts are installed, they are positioned by two locating pins of the tooling, and then the parts are clamped together by the locating pins and the tensioning pins. It is stable and reliable. The first forming tool 9 and the second forming tool 10 are used for two different sizes of blind covers respectively. They are semi-finishing tools. The forming tool head is designed to be stepped, which can increase cutting efficiency and reduce blade loss. Relying on CNC machine tools and through the compilation of fixed process flows, the CNC program can achieve automated operation, which is fast and safe. The positioning base 1 is the foundation of the tooling. The central inner hole of the base and a positioning pin hole are the installation and positioning reference of the base. It is installed on the workbench of the machining center and fixed by pressure bolts around the tooling. The main positioning pin 2 is used to position the part installation, and cooperates with the main positioning pin 2 of the part and is fixed to the positioning base 1 with the base bolts. The auxiliary positioning pin 3 is also used for positioning the part during installation. It cooperates with the main positioning pin to limit the rotational freedom of the part and is fixed to the positioning base 1 with the base bolts. The clamping pin 4 does not serve as a positioning function for the part, but is only used for clamping the part. It is diagonally installed on the positioning base 1. The mounting bolts 5 are used for clamping and fixing the part. The shank of the first forming tool 9 is a 7:24 taper shank, which is installed on the spindle of the CNC machine tool and can automatically change the tool. The tool rod and tool handle are an integral structure, and the tool handle head is designed with a step design for installing a cutting blade. The tool handle shank of the second forming tool 10 is a 7:24 taper shank, which is installed on the spindle of a CNC machine tool and can automatically change tools. The tool rod is installed on the tool handle and fixed by side screws. The tool rod head is designed with a stepped style for installing a blade.

[0039] See also Figure 2A slide groove is vertically provided at the center of the bottom of the positioning base 1, and a connecting convex plate 6 is horizontally provided at the front and rear ends of the center of the bottom of the positioning base 1. The connecting convex plate 6 can be moved along the slide groove at the bottom of the positioning base 1. A bidirectional lead screw 7 is vertically provided at the center of the inner cavity of the positioning base 1, and a sliding block is sleeved at the front and rear ends of the center of the outer surface of the bidirectional lead screw 7. When the bidirectional lead screw 7 rotates in the inner cavity of the positioning base 1, the two sets of sliding blocks move toward each other.

[0040] See also Figure 3 , a connecting rod is longitudinally installed at the bottom center of the sliding block, and the bottom end of the connecting rod extends downward through the slide groove and is connected to the top center of the corresponding connecting convex plate 6. The sliding block drives the connecting convex plate 6 to move through the corresponding connecting rod, thereby increasing or reducing the distance between the two sets of connecting convex plates 6, so that the positioning base 1 can be connected to the CNC machine tool connection structure through the connecting convex plate 6, and can be connected to the connecting convex grooves with different spacings on the connection structure within a certain range. One end of the bidirectional lead screw 7 extends outward through the interior of the positioning base 1 and is connected to a cross swivel plate 8. The bidirectional lead screw 7 can be driven to rotate and the steering can be controlled on the outer wall of the positioning base 1 through the cross swivel plate 8.

[0041] This solution: After the positioning base 1, the first forming tool 9 and the second forming tool 10 are respectively installed on the corresponding positions of the CNC machine tool, the cylinder head is positioned by the main positioning pin 2 and the auxiliary positioning pin 3, and four mounting bolts 5 are installed at the bolt hole position of the cylinder head, and they can be lightly tightened. The bottom hole is drilled to destroy the bottom of the cover. The first forming tool 9 or the second forming tool 10 is used to semi-finish boring the cover to remove the side wall margin of the cover. A single boring tool is used to perform single boring to further remove the side wall margin of the cover. A flat-headed copper rod is used to gently tap the remaining side wall cover to make the cover fall off. At this time, it is necessary to protect the side wall of the part from being damaged. After confirming that all the covers to be removed have fallen off, loosen the four mounting bolts 5 to remove the workpiece. The cross turntable 8 drives the bidirectional screw 7 to rotate, and the sliding block drives the connecting convex plate 6 to move through the corresponding connecting rod, thereby increasing or reducing the distance between the two sets of connecting convex plates 6, so that the positioning base 1 can be connected to the CNC machine tool connection structure through the connecting convex plate 6.

[0042] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device.

[0043] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A device for safely and efficiently removing the water plugging cover of a medium-speed engine cylinder head, characterized in that: include: A positioning base (1), and an inner hole arranged at the top center, and positioning pin holes are arranged around the top center of the positioning base (1); An auxiliary positioning pin (3) is arranged at the top of the positioning pin hole of the positioning base (1), and a clamping pin (4) is additionally arranged at the top of the auxiliary positioning pin (3), a main positioning pin (2) is arranged at the top of the clamping pin (4), and a mounting bolt (5) is arranged at the top of the main positioning pin (2); A first forming tool (9) and a second forming tool (10), wherein the first forming tool (9) is composed of a forming tool handle and a blade, and the second forming tool (10) is composed of a tool handle, a forming tool rod and a blade, and the first forming tool (9) and the second forming tool (10) are both installed at corresponding positions of a CNC machine tool.

2. The device for safely and efficiently removing the water plugging cover of a medium-speed engine cylinder head according to claim 1 is characterized in that: A sliding groove is vertically provided at the center of the bottom of the positioning base (1), and connecting convex plates (6) are horizontally provided at the front and rear ends of the center of the bottom of the positioning base (1).

3. The device for safely and efficiently removing the water plugging cover of a medium-speed engine cylinder head according to claim 2 is characterized in that: A bidirectional lead screw (7) is vertically arranged at the center of the inner cavity of the positioning base (1), and sliding blocks are sleeved at the front and rear ends of the center of the outer surface of the bidirectional lead screw (7).

4. The device for safely and efficiently removing the water plugging cover of a medium-speed engine cylinder head according to claim 3 is characterized in that: A connecting rod is longitudinally installed at the bottom center position of the sliding block, and the bottom end of the connecting rod extends downward through a sliding groove and is connected to the top center position of the corresponding connecting convex plate (6).

5. The device for safely and efficiently removing the water plugging cover of the cylinder head of a medium-speed engine according to claim 4 is characterized in that: One end of the bidirectional lead screw (7) passes through the interior of the positioning base (1) and extends outward, and is connected to a cross rotating plate (8).

6. A method for safely and efficiently removing a water-blocking cover of a medium-speed engine cylinder head, characterized in that: include: Step 1: Before installation, confirm the position of the cover that needs to be removed, and modify the program coordinates of the cover that needs to be removed in the CNC program; Step 2: Clean the cylinder head reference plane, and after the cylinder head is positioned by the main positioning pin and the auxiliary positioning pin, install four mounting bolts at the bolt hole positions of the cylinder head; Step 3: Take the center of the large outer circle at the upper end of the cylinder head as the program reference, set the zero position, and run the CNC program to destroy the cover. The detailed sequence of this process is as follows: 1) Drill a bottom hole to destroy the bottom of the cover. 2) Select a forming tool or forming tool according to the size of the blind cover, perform semi-finishing boring on the blind cover, and remove the side wall allowance of the blind cover. At this time, there is about 0.5mm allowance from the hole wall. 3) Use a single boring tool to perform single boring to further remove the side wall excess of the cover. The side wall excess after processing by the single boring tool is about 0.1mm. Step 4: Use a flat copper rod to gently tap the remaining part of the side wall cover to make the cover fall off; Step 5: After confirming that all the blind covers to be removed have fallen off, loosen the four mounting bolts and remove the workpiece. Step 6: Blow out with cold air to ensure that all residual materials in the inner cavity of the part have been blown out. Step 7: Clean the parts to the required cleanliness, reinstall the cover according to the process and conduct pressure test.

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