A precision boring tool for machining the outer circle of an engine cylinder bore

Abstract

The present application provides a precision sleeve boring tool for machining the outer circle of an engine cylinder hole, belonging to the technical field of boring tools. The precision sleeve boring tool for machining the outer circle of an engine cylinder hole includes a tool body and a connection assembly. The tool body includes a sleeve and a blade, the blade is fixedly connected to the sleeve, the sleeve is provided with a cavity, a connection hole is opened on one side of the sleeve, a groove is opened on the side of the sleeve away from the connection hole, the grooves are evenly distributed on the sleeve, and a fixing groove is opened on the side of the sleeve close to the groove. When the application is used, the blade is fixed on the sleeve through the connection assembly, the sleeve is installed on an external device, the engine housing is placed below the sleeve, the sleeve is driven to rotate and move downward by the external device, and the blade performs surface machining on the outer circle of the engine cylinder hole. Through the wavy design on one side of the sleeve, the chips generated during machining are scraped off from the surface of the outer circle of the engine cylinder hole in time, which is convenient for operation and machining.

Description

Technical Field

[0001] This application relates to the field of boring tools, and more particularly, to a precision sleeve boring tool for machining the outer circle of an engine cylinder hole. Background Art

[0002] The cylinder holes of gasoline engine blocks and diesel engine blocks are machined to approach dimensional tolerance and surface finish tolerance in order to maintain compression and provide sufficient oil retention. In traditional methods, a multi-step boring process is used to machine the cylinder holes to control the dimensions and a honing process is used to finish machine the cylinder holes to control the surface finish. Usually three independent steps are used in the boring process: rough boring, semi-finish boring, and finish boring. Each step usually requires a tool with a fixed diameter.

[0003] Currently, finish boring tools usually require a post-processing diameter measuring instrument and a tool adjustment head to compensate for tool wear and maintain a consistent diameter in order to produce high-quality cylinder holes, but there is a lack of corresponding tools for machining the outer circle of engine cylinder holes, and the machining is relatively cumbersome.

[0004] How to invent a precision sleeve boring tool for machining the outer circle of an engine cylinder hole to improve these problems has become an urgent problem to be solved by those skilled in the art. Summary of the Invention

[0005] To make up for the above deficiencies, this application provides a precision sleeve boring tool for machining the outer circle of an engine cylinder hole, aiming to improve the cumbersome problem of machining the outer circle of an engine cylinder hole.

[0006] An embodiment of this application provides a precision sleeve boring tool for machining the outer circle of an engine cylinder hole, which includes a tool body and a connecting component.

[0007] The tool body includes a sleeve and a blade. The blade is fixedly connected to the sleeve. The sleeve is provided with a cavity. A connecting hole is opened on one side of the sleeve. A groove is opened on the side of the sleeve away from the connecting hole. The grooves are evenly distributed on the sleeve. A fixing groove is opened on the side of the sleeve close to the groove. The blade is located in the fixing groove. The side of the sleeve close to the groove is designed in a wavy shape. The connecting component is fixedly connected to the sleeve, and the sleeve and the blade are connected and fixed through the connecting component.

[0008] In a specific embodiment, the cavity facilitates adaptation to a corresponding engine cylinder bore, and the connection hole facilitates connection to an external device. The blade is fixed to the sleeve through the connection component, the sleeve is installed on the external device, the engine housing is placed below the sleeve, the sleeve is driven by the external device to rotate and move downward, and the blade performs surface machining on the outer circumference of the engine cylinder bore. Through the wavy design on one side of the sleeve, the chips generated during machining are scraped off from the outer circumference surface of the engine cylinder bore in a timely manner, which is convenient for operation and machining.

[0009] In the above implementation process, a chute is provided on the sleeve near the groove side, and a placement groove is also provided on the sleeve.

[0010] In the above implementation process, the placement groove communicates with the chute, an activity cavity is provided on the sleeve, and the activity cavity communicates with the placement groove.

[0011] In the above implementation process, a connection groove is provided on the sleeve near the other side of the activity cavity.

[0012] In the above implementation process, the connection component includes a connecting piece and a limiting plate. The connecting piece includes a threaded rod and a stop block. The threaded rod is slidably connected to the chute, the stop block is slidably connected to the placement groove, one end of the threaded rod is fixedly connected to the stop block, and the limiting plate is slidably connected to the activity cavity.

[0013] In a specific embodiment, the threaded rod is fixedly welded to the stop block.

[0014] In the above implementation process, a threaded hole is provided on the blade, and the threaded rod is rotatably connected to the threaded hole.

[0015] In a specific embodiment, through the threaded hole and the threaded rod, it is convenient to lock and fix the blade on the sleeve.

[0016] In the above implementation process, the threaded rod and the stop block are vertically designed, and a nut is rotatably connected to the other end of the threaded rod.

[0017] In a specific embodiment, the nut facilitates locking and fixing the blade on the sleeve and at the same time prevents the threaded rod from rotating.

[0018] In the above implementation process, a limiting groove is provided on the upper side of the limiting plate, and the limiting groove is designed to be paired with the stop block.

[0019] In a specific embodiment, the position of the stop block is limited through the limiting groove to prevent the blade from tilting.

[0020] In the above implementation process, a connecting spring is fixedly connected to the other side of the limiting plate, and the other side of the connecting spring is fixedly connected to the sleeve.

[0021] In a specific implementation, the connecting spring is bolted to the limiting plate, and the other end of the connecting spring is bolted to the sleeve. The connecting spring is used to provide a force to the limiting plate. Through the extrusion of the limiting plate, the stopper is fixed.

[0022] In the above implementation process, the connecting spring is located in the connecting groove, and one side of the limiting plate is designed to be arc-shaped.

[0023] In a specific implementation, due to the arc-shaped design on one side of the limiting plate, it is convenient for the stopper to move inward, facilitating the fixed installation of the blade. When installing the blade, the threaded rod moves in the chute, and the stopper moves in the movable cavity by pressing down the limiting plate and compressing the connecting spring. When moving to an appropriate position, rotate the threaded rod so that the stopper is stuck between the limiting groove and the placement groove. The connecting spring extends and provides an upward force to the limiting plate, making the stopper stable. Rotate the nut to further fix the blade. When replacement is needed, rotate the nut, move the threaded rod downward while rotating the threaded rod, and then pull it outwards, which is convenient for disassembly and installation. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings required for the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of the present application, and thus should not be regarded as limiting the scope. For those of ordinary skill in the art, other relevant drawings can be obtained based on these drawings without creative efforts.

[0025] Figure 1 is a schematic cross-sectional view of a precision sleeve boring tool for machining the outer circle of an engine cylinder bore provided by the embodiment of the present application;

[0026] Figure 2 is a schematic side view of a precision sleeve boring tool for machining the outer circle of an engine cylinder bore provided by the embodiment of the present application;

[0027] Figure 3 is provided by the embodiment of the present application Figure 1 an enlarged cross-sectional view of the structure at A in;

[0028] Figure 4 is a schematic view of the chute and the placement groove provided by the embodiment of the present application.

[0029] In the figure: 100 - tool body; 110 - sleeve; 111 - cavity; 112 - connection hole; 113 - chute; 114 - placement groove; 115 - movable cavity; 116 - connection groove; 117 - groove; 118 - fixing groove; 120 - blade; 311 - threaded rod; 312 - stop block; 313 - nut; 320 - limiting plate; 321 - limiting groove; 330 - connecting spring. Detailed implementation manners

[0030] Next, the technical solutions in the embodiments of the present application will be described with reference to the accompanying drawings in the embodiments of the present application.

[0031] To make the purpose, technical solutions and advantages of the embodiments of the present application clearer, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present application. Obviously, the described embodiments are part of the embodiments of the present application, rather than all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present application.

[0032] Therefore, the detailed description of the embodiments of the present application provided in the accompanying drawings is not intended to limit the scope of the present application to be protected, but merely represents the selected embodiments of the present application. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present application.

[0033] It should be noted that similar reference numerals and letters indicate similar items in the following drawings. Therefore, once an item is defined in one drawing, it does not need to be further defined and explained in subsequent drawings.

[0034] In the description of the present application, it should be understood that the orientation or positional relationship indicated by the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", etc. is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present application and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation to the present application.

[0035] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the quantity of the indicated technical features. Thus, features defined with "first" and "second" may explicitly or implicitly include one or more of such features. In the description of this application, "a plurality of" means two or more unless otherwise specifically defined.

[0036] In this application, unless otherwise clearly defined and limited, the terms such as "installed", "connected", "linked", "fixed", etc. shall be understood in a broad sense. For example, it may be a fixed connection, a detachable connection, or integrated; it may be directly connected or indirectly connected through an intermediate medium, and it may be the connection inside two components or the interaction relationship between two components. For those of ordinary skill in the art, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0037] In this application, unless otherwise clearly defined and limited, the first feature being "on" or "under" the second feature may include the direct contact between the first and second features, or may include the situation where the first and second features are not in direct contact but in contact through additional features therebetween. Moreover, the first feature being "above", "over" and "on top of" the second feature includes that the first feature is directly above and obliquely above the second feature, or merely means that the horizontal height of the first feature is higher than that of the second feature. The first feature being "under", "beneath" and "underneath" the second feature includes that the first feature is directly below and obliquely below the second feature, or merely means that the horizontal height of the first feature is lower than that of the second feature.

[0038] Please refer to Figures 1-4 , this application provides a precision boring tool for machining the outer circle of an engine cylinder bore, which includes a tool body 100 and a connection assembly.

[0039] Among them, the connection assembly is fixedly connected to the tool body 100. The tool body 100 is used to facilitate the surface machining of the outer circle of the engine cylinder bore, and the connection assembly is used to facilitate disassembly and installation.

[0040] Please refer to Figure 1 , 2 , 3, 4, the tool body 100 includes a sleeve 110 and a blade 120. The blade 120 is fixedly connected to the sleeve 110. The sleeve 110 is provided with a cavity 111, and the cavity 111 is convenient for adapting to the corresponding engine cylinder bore. A connection hole 112 is opened on one side of the sleeve 110, and the connection hole 112 is convenient for connecting external equipment. A groove 117 is opened on the side of the sleeve 110 away from the connection hole 112, and the grooves 117 are evenly distributed on the sleeve 110. A fixing groove 118 is opened on the side of the sleeve 110 close to the groove 117, and the blade 120 is located in the fixing groove 118. The side of the sleeve 110 close to the groove 117 is designed in a wavy shape.

[0041] In some specific embodiments, a sliding groove 113 is provided on one side of the sleeve 110 close to the groove 117. The sleeve 110 is further provided with a placement groove 114. The placement groove 114 communicates with the sliding groove 113. The sleeve 110 is provided with a movable cavity 115. The movable cavity 115 communicates with the placement groove 114. A connection groove 116 is provided on the other side of the sleeve 110 close to the movable cavity 115.

[0042] Please refer to Figure 3 , the connection component is fixedly connected to the sleeve 110, and the sleeve 110 and the blade 120 are fixedly connected through the connection component.

[0043] In some specific embodiments, the connection component includes a connecting piece and a limiting plate 320. The connecting piece includes a threaded rod 311 and a stopper 312. The threaded rod 311 is slidably connected to the sliding groove 113. The stopper 312 is slidably connected to the placement groove 114. One end of the threaded rod 311 is fixedly connected to the stopper 312. The threaded rod 311 is welded and fixed to the stopper 312. The limiting plate 320 is slidably connected to the movable cavity 115. The blade 120 is provided with a threaded hole. The threaded rod 311 is rotatably connected to the threaded hole. Through the threaded hole and the threaded rod 311, it is convenient to lock and fix the blade 120 on the sleeve 110. The threaded rod 311 and the stopper 312 are designed vertically. A nut 313 is rotatably connected to the other end of the threaded rod 311. The nut 313 is convenient to lock and fix the blade 120 on the sleeve 110 and at the same time prevent the threaded rod 311 from rotating. A limiting groove 321 is provided on the upper side of the limiting plate 320. The limiting groove 321 is designed to be paired with the stopper 312. The position of the stopper 312 is limited through the limiting groove 321 to prevent the blade 120 from tilting. A connection spring 330 is fixedly connected to the other side of the limiting plate 320. The other side of the connection spring 330 is fixedly connected to the sleeve 110. The connection spring 330 is bolted and fixed to the limiting plate 320. The other end of the connection spring 330 is bolted and fixed to the sleeve 110. The connection spring 330 is used to provide a force to the limiting plate 320. Through the extrusion of the limiting plate 320, the stopper 312 is fixed. The connection spring 330 is located in the connection groove 116. One side of the limiting plate 320 is arc-shaped. Through the arc-shaped design of one side of the limiting plate 320, it is convenient for the stopper 312 to move inward, facilitating the fixed installation of the blade 120.

[0044] The working principle of the precision sleeve boring tool for machining the outer circle of the engine cylinder bore: The blade 120 is fixed on the sleeve 110 through the connecting component. The sleeve 110 is installed on the external device. The engine housing is placed below the sleeve 110. The external device drives the sleeve 110 to rotate and move downward. The blade 120 performs surface machining on the outer circle of the engine cylinder bore. Through the wavy design on one side of the sleeve 110, the chips generated during machining are scraped off from the surface of the outer circle of the engine cylinder bore in a timely manner, which is convenient for operation and machining. When the blade 120 needs to be installed, the threaded rod 311 moves in the chute 113. The block 312 moves in the movable cavity 115 by pressing down the limiting plate 320 and compressing the connecting spring 330. When it moves to an appropriate position, the threaded rod 311 is rotated so that the block 312 is stuck between the limiting groove 321 and the placement groove 114. The connecting spring 330 stretches and provides an upward acting force on the limiting plate 320, making the block 312 stable. The nut 313 is rotated to further fix the blade 120. When replacement is needed, the nut 313 is rotated, and while the threaded rod 311 is moved downward, the threaded rod 311 is rotated and then pulled outwards, which is convenient for disassembly and installation.

[0045] It should be noted that the specific model specifications of the nut 313 and the connecting spring 330 need to be selected and determined according to the actual specifications of the device. The specific selection calculation method adopts the existing technology in this field, so it will not be elaborated in detail.

[0046] The above are only the embodiments of the present application and are not used to limit the protection scope of the present application. For those skilled in the art, various changes and modifications can be made to the present application. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application shall be included in the protection scope of the present application. It should be noted that similar reference numerals and letters represent similar items in the following drawings. Therefore, once an item is defined in one drawing, it does not need to be further defined and explained in subsequent drawings.

[0047] The above is only the specific implementation manner of the present application, but the protection scope of the present application is not limited thereto. Any person skilled in the art can easily think of changes or replacements within the technical scope disclosed in the present application, and all should be covered by the protection scope of the present application. Therefore, the protection scope of the present application should be subject to the protection scope of the claims.

Claims

1. A fine boring tool for machining the outer circle of an engine cylinder bore, characterized in that, Comprising A tool body (100), the tool body (100) comprising a sleeve (110) and a blade (120), the blade (120) being fixedly connected to the sleeve (110), the sleeve (110) being provided with a cavity (111), one side of the sleeve (110) being provided with a connection hole (112), the side of the sleeve (110) away from the connection hole (112) being provided with a groove (117), the grooves (117) being evenly distributed on the sleeve (110), the side of the sleeve (110) close to the groove (117) being provided with a fixing groove (118), the blade (120) being located in the fixing groove (118), the side of the sleeve (110) close to the groove (117) being designed in a wavy shape; A connection assembly, the connection assembly being fixedly connected to the sleeve (110), and the sleeve (110) and the blade (120) being connected and fixed through the connection assembly; Wherein, a sliding groove (113) is provided on the side of the sleeve (110) close to the groove (117), and the sleeve (110) is further provided with a placement groove (114); The placement groove (114) communicates with the sliding groove (113), the sleeve (110) is provided with a movable cavity (115), and the movable cavity (115) communicates with the placement groove (114); A connection groove (116) is provided on the other side of the sleeve (110) close to the movable cavity (115); The connection assembly includes a connecting piece and a limiting plate (320), the connecting piece includes a threaded rod (311) and a stopper (312), the threaded rod (311) is slidably connected to the sliding groove (113), the stopper (312) is slidably connected to the placement groove (114), one end of the threaded rod (311) is fixedly connected to the stopper (312), and the limiting plate (320) is slidably connected to the movable cavity (115); A limiting groove (321) is provided on the upper side of the limiting plate (320), and the limiting groove (321) is designed to be paired with the stopper (312); A connection spring (330) is fixedly connected to the other side of the limiting plate (320), and the other side of the connection spring (330) is fixedly connected to the sleeve (110).

2. The fine boring tool for machining the outer circle of the engine cylinder bore according to claim 1, characterized in that, The blade (120) is provided with a threaded hole, and the threaded rod (311) is rotatably connected to the threaded hole.

3. The precision boring tool for machining the outer circle of the engine cylinder bore according to claim 2, wherein The threaded rod (311) and the stopper (312) are designed to be perpendicular, and a nut (313) is rotatably connected to the other end of the threaded rod (311).

4. A precision boring tool for machining the outer circle of an engine cylinder bore according to claim 1, characterized in that, The connection spring (330) is located in the connection groove (116), and one side of the limiting plate (320) is designed to be arc-shaped.

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