Cylinder sleeve convenient to machine

Abstract

The utility model relates to the technical field of mechanical manufacturing, and provides a cylinder sleeve convenient to machine, which comprises an upper cylinder barrel and a lower cylinder barrel, a horn hole is arranged at one end of the upper cylinder barrel, threads are fixedly connected to the inner surface of the horn hole, a circular truncated cone is fixedly connected to the outer surface of the lower cylinder barrel, and a spiral groove is arranged on the outer surface of the circular truncated cone. The side, close to the horn hole, of the upper cylinder barrel and the end, close to the circular truncated cone, of the lower cylinder barrel are each provided with a plurality of dovetail grooves, a pair of dovetail grooves in the same horizontal direction are formed in the outer surfaces of the upper cylinder barrel and the lower cylinder barrel, and dovetail pins are movably embedded in the multiple pairs of dovetail grooves correspondingly to divide the long cylinder sleeve into the upper cylinder barrel and the lower cylinder barrel. And then the upper cylinder barrel and the lower cylinder barrel form a longer cylinder sleeve through threaded connection and tenon-and-mortise connection of the dovetail pin, so that the longer cylinder sleeve can be conveniently machined, precision indexes such as cylindricity, roundness and straightness of the whole cylinder sleeve are ensured, the machining precision is ensured, and the machining difficulty is reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of mechanical manufacturing, in particular to a cylinder sleeve which is easy to process. Background Art

[0002] This easy-to-process cylinder liner improves processing efficiency. Its segmented structure shortens processing cycles, reduces complexity, and enhances product quality. Laser-assisted marking and positioning enhance precision, while intelligent monitoring and adaptive adjustment stabilize the machining process. Material selection and composite design optimize friction performance, ensuring the cylinder liner's performance and lifespan.

[0003] For high-power output equipment, such as internal combustion engines for large generator sets, a larger combustion volume is required to accommodate a larger fuel and air mixture for combustion. This type of cylinder liner provides a larger bore and piston stroke, allowing each combustion process to release more energy, thus meeting the equipment's high-power requirements.

[0004] However, today's large cylinder liners are quite large, with diameters reaching several meters and lengths of varying lengths. Consequently, even small deformations or accumulated errors during machining can result in substandard final products. Consequently, it's impossible to guarantee precision indicators like cylindricity, roundness, and straightness across the entire cylinder liner, increasing the difficulty of machining. Utility Model Content

[0005] In view of the deficiencies in the prior art, the purpose of the present invention is to provide a cylinder liner that is easy to process, so as to solve the problems raised in the above background technology.

[0006] In order to achieve the above-mentioned purpose, the present invention adopts the following technical scheme: a cylinder sleeve that is easy to process, comprising: an upper cylinder barrel and a lower cylinder barrel, a trumpet hole is provided at one end of the upper cylinder barrel, the inner surface of the trumpet hole is fixedly connected with a thread, the outer surface of the lower cylinder barrel is fixedly connected with a frustum, the outer surface of the frustum is provided with a spiral groove, a side of the upper cylinder barrel close to the trumpet hole and an end of the lower cylinder barrel close to the frustum are provided with multiple dovetail grooves, the dovetail grooves on the same level of the outer surfaces of the upper and lower cylinder barrels are a pair, and dovetail pins are movably embedded in the interiors of the multiple pairs of dovetail grooves, the longer cylinder barrel is divided into an upper cylinder barrel and a lower cylinder barrel, and then the upper cylinder barrel and the lower cylinder barrel are connected by threaded connection and mortise and tenon connection of dovetail pins to form a longer cylinder sleeve, thereby facilitating the processing of the longer cylinder sleeve.

[0007] As a preferred embodiment, the outer surfaces of the upper cylinder barrel and the lower cylinder barrel are provided with a toughness layer, the inner surfaces of the upper cylinder barrel and the lower cylinder barrel are provided with a self-lubricating layer, and a rigid layer is provided between the toughness layer and the self-lubricating layer of the upper cylinder barrel and the lower cylinder barrel. The polytetrafluoroethylene composite material itself has an extremely low friction coefficient and is an excellent self-lubricating material, providing lubrication for the piston.

[0008] As a preferred embodiment, the inner surfaces of the upper cylinder and the lower cylinder are both provided with a plurality of notches, which can provide a good working environment for the graphite blocks.

[0009] As a preferred embodiment, the outer surface of the lower cylinder is provided with a plurality of annular grooves, and the inner surfaces of the plurality of annular grooves are movably embedded with annular gaskets, which serve as a seal and fill the gap between the cylinder liner and the cylinder body to prevent leakage of liquids such as coolant and engine oil.

[0010] As a preferred embodiment, a mounting pointing head is provided on a side of the lower cylinder away from the truncated table to facilitate installation of the cylinder liner.

[0011] As a preferred embodiment, the toughness layer is made of aluminum alloy, the self-lubricating layer is made of polytetrafluoroethylene composite material, and the rigid layer is made of tungsten carbide cobalt cemented carbide. Tungsten carbide cobalt cemented carbide has good wear resistance and high compressive strength, providing strong rigidity for the cylinder liner.

[0012] As a preferred embodiment, graphite sheets are adhered to the interior of the plurality of notches by a high-temperature-resistant and wear-resistant adhesive, and the graphite sheets can further reduce the friction coefficient inside the upper cylinder and the lower cylinder.

[0013] Compared with the prior art, the advantages and positive effects of the present invention are:

[0014] The utility model divides a long cylinder sleeve into an upper cylinder barrel and a lower cylinder barrel, and then connects them by means of threaded connection and mortise and tenon connection of a dovetail pin, so that the upper cylinder barrel and the lower cylinder barrel form a long cylinder sleeve, thereby facilitating the processing of the long cylinder sleeve, ensuring the precision indicators such as cylindricity, roundness and straightness of the entire cylinder sleeve, thereby ensuring the processing precision and reducing the processing difficulty. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 A schematic diagram of the main structure of a cylinder liner that is easy to process provided by the utility model;

[0016] Figure 2 A schematic diagram of the explosion structure of a cylinder liner that is easy to process provided by the utility model;

[0017] Figure 3This is a schematic diagram of the position structure of the annular groove of a cylinder liner that is easy to process provided by the utility model;

[0018] Figure 4 The utility model provides a schematic cross-sectional structure diagram of a cylinder liner that is easy to process.

[0019] Legend:

[0020] 1. Upper cylinder; 2. Lower cylinder; 3. Horn hole; 4. Thread; 5. Cone; 6. Spiral groove; 7. Dovetail groove; 8. Dovetail pin; 9. Tough layer; 10. Rigid layer; 11. Self-lubricating layer; 12. Notch; 13. Annular groove; 14. Annular washer; 15. Install the pointing head. DETAILED DESCRIPTION

[0021] 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 embodiments described 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 making creative efforts are within the scope of protection of the present invention.

[0022] See also Figure 1-4 The utility model provides a technical solution: a cylinder sleeve that is easy to process, comprising: an upper cylinder barrel 1 and a lower cylinder barrel 2, a trumpet hole 3 is opened at one end of the upper cylinder barrel 1, the inner surface of the trumpet hole 3 is fixedly connected with a thread 4, the outer surface of the lower cylinder barrel 2 is fixedly connected with a round platform 5, and the outer surface of the round platform 5 is opened with a spiral groove 6. The side of the upper cylinder barrel 1 close to the trumpet hole 3 and the end of the lower cylinder barrel 2 close to the round platform 5 are both provided with a plurality of dovetail grooves 7 at the same level on the outer surfaces of the upper cylinder barrel 1 and the lower cylinder barrel 2. The dovetail grooves 7 on the same level as the dovetail grooves 7 form a pair, and the interiors of the multiple pairs of dovetail grooves 7 are movably embedded with dovetail pins 8, which divide the longer cylinder sleeve into the upper cylinder barrel 1 and the lower cylinder barrel 2, and then use the mortise and tenon connection of the threaded connection and the dovetail pin 8 to make the upper cylinder barrel 1 and the lower cylinder barrel 2 form a longer cylinder sleeve, thereby facilitating the processing of the longer cylinder sleeve, ensuring the accuracy indicators such as cylindricity, roundness and straightness of the entire cylinder sleeve, thereby ensuring the processing accuracy and reducing the processing difficulty.

[0023] like Figure 1-4 As shown, the outer surfaces of the upper cylinder 1 and the lower cylinder 2 are provided with a toughness layer 9, the inner surfaces of the upper cylinder 1 and the lower cylinder 2 are provided with a self-lubricating layer 11, and a rigid layer 10 is provided between the toughness layer 9 and the self-lubricating layer 11 of the upper cylinder 1 and the lower cylinder 2. The polytetrafluoroethylene composite material itself has an extremely low friction coefficient and is an excellent self-lubricating material, providing lubrication function for the piston.

[0024] like Figure 1-4As shown, the inner surfaces of the upper cylinder 1 and the lower cylinder 2 are both provided with a plurality of notches 12 , which can provide a good working environment for the graphite block and increase the service life of the graphite sheet.

[0025] like Figure 1-4 As shown, the outer surface of the lower cylinder 2 is provided with a plurality of annular grooves 13, and the inner surfaces of the plurality of annular grooves 13 are movably embedded with annular gaskets 14. The annular gaskets 14 have a sealing effect. They fill the gap between the cylinder liner and the cylinder body to prevent leakage of liquids such as coolant and engine oil, and can also buffer vibration.

[0026] like Figure 1-4 As shown, a mounting pointing head 15 is provided on the side of the lower cylinder 2 away from the truncated cone 5 to facilitate the installation of the cylinder liner and improve the installation efficiency.

[0027] like Figure 1-4 As shown, the toughness layer 9 is made of aluminum alloy, the self-lubricating layer 11 is made of polytetrafluoroethylene composite material, and the rigid layer 10 is made of tungsten carbide cobalt hard alloy. Tungsten carbide cobalt hard alloy has good wear resistance and high compressive strength, and can provide strong rigidity for the cylinder liner.

[0028] like Figure 1-4 As shown, graphite sheets are adhered to the interior of the multiple notches 12 through a high-temperature-resistant and wear-resistant adhesive. The graphite sheets can further reduce the friction coefficient inside the upper cylinder 1 and the lower cylinder 2, and further provide lubrication function for the piston.

[0029] Working principle: This accessory is a cylinder sleeve that is easy to process. During processing, first use a lathe to clamp the upper cylinder barrel 1, then use a twist drill to open a trumpet hole 3 on the end face of the upper cylinder barrel 1, and then use a thread milling cutter to form a thread 4 inside the trumpet hole 3, and then use a turning tool to open multiple dovetail grooves 7 on the surface of the upper cylinder barrel 1.

[0030] Then use a lathe to clamp the lower cylinder 2, and use a turning tool to form a cone 5 at one end of the lower cylinder 2 and open multiple annular grooves 13 on the outer surface, then use a turning tool to open an installation pointing head 15 and multiple dovetail grooves 7 on the surface of the lower cylinder 2, and finally use a thread turning tool to open a spiral groove 6 on the cone 5, so that the upper cylinder 1 and the lower cylinder 2 can be threaded together.

[0031] Then rotate the upper cylinder 1 to screw it into the lower cylinder 2, then install the dovetail pin 8 into the inside of the dovetail groove 7, and put the annular gasket 14 into the inside of the annular groove 13 to form a complete and longer cylinder sleeve.

[0032] The material of the toughness layer 9 is aluminum alloy, which has low cutting resistance and is easy to perform high-speed cutting. The material of the self-lubricating layer 11 is polytetrafluoroethylene composite material, which itself has an extremely low friction coefficient and is an excellent self-lubricating material. The graphite sheet inside the groove 12 can further reduce the friction coefficient inside the upper cylinder 1 and the lower cylinder 2, and further provide lubrication function for the piston. The material of the rigid layer 10 is tungsten carbide cobalt cemented carbide. Tungsten carbide cobalt cemented carbide has good wear resistance and high compressive strength, and can provide strong rigidity for the cylinder liner.

[0033] The above description is only a preferred embodiment of the present invention and does not limit the present invention in any other form. Any technician familiar with the profession may use the technical content disclosed above to change or modify it into an equivalent embodiment with equivalent changes for application in other fields. However, any simple modification, equivalent change and modification of the above embodiment made according to the technical essence of the present invention without departing from the content of the technical solution of the present invention shall still fall within the scope of protection of the technical solution of the present invention.

Claims

1. A cylinder liner that is easy to process, comprising: The upper cylinder (1) and the lower cylinder (2) are characterized in that: a trumpet hole (3) is provided at one end of the upper cylinder (1), the inner surface of the trumpet hole (3) is fixedly connected with a thread (4), the outer surface of the lower cylinder (2) is fixedly connected with a truncated cone (5), the outer surface of the truncated cone (5) is provided with a spiral groove (6), a side of the upper cylinder (1) close to the trumpet hole (3) and an end of the lower cylinder (2) close to the truncated cone (5) are provided with a plurality of dovetail grooves (7), the dovetail grooves (7) on the same level of the outer surfaces of the upper cylinder (1) and the lower cylinder (2) are a pair, and dovetail pins (8) are movably embedded in the interiors of the plurality of pairs of dovetail grooves (7).

2. The cylinder liner that is easy to process according to claim 1, characterized in that: The outer surfaces of the upper cylinder barrel (1) and the lower cylinder barrel (2) are provided with a toughness layer (9), the inner surfaces of the upper cylinder barrel (1) and the lower cylinder barrel (2) are provided with a self-lubricating layer (11), and a rigid layer (10) is provided between the toughness layer (9) and the self-lubricating layer (11) of the upper cylinder barrel (1) and the lower cylinder barrel (2).

3. The cylinder liner that is easy to process according to claim 1, characterized in that: The inner surfaces of the upper cylinder (1) and the lower cylinder (2) are both provided with a plurality of notches (12).

4. The cylinder liner that is easy to process according to claim 1, characterized in that: The outer surface of the lower cylinder (2) is provided with a plurality of annular grooves (13), and annular gaskets (14) are movably embedded in the inner surfaces of the plurality of annular grooves (13).

5. The cylinder liner that is easy to process according to claim 1, characterized in that: A mounting pointing head (15) is provided on a side of the lower cylinder (2) away from the circular platform (5).

6. The cylinder liner that is easy to process according to claim 2, characterized in that: The material of the toughness layer (9) is aluminum alloy, the material of the self-lubricating layer (11) is polytetrafluoroethylene composite material, and the material of the rigid layer (10) is tungsten carbide cobalt hard alloy.

7. The cylinder liner that is easy to process according to claim 3, characterized in that: Graphite sheets are adhered to the interiors of the plurality of notches (12) via a high-temperature-resistant and wear-resistant adhesive.

Images