Fixture and boring machine for machining inner hole of cylinder sleeve

Abstract

The utility model provides a clamp for machining an inner hole of a cylinder sleeve and a boring machine, belongs to the technical field of cylinder sleeve clamps, and aims to solve the positioning problem during machining of the inner hole of the cylinder sleeve. The clamp for machining the inner hole of the cylinder sleeve comprises at least two clamping parts. Every two adjacent clamping parts are arranged at intervals. Each clamping part comprises a base, a tile cover and a tile. The tile cover is detachably connected to the base, and an annular limiting space is defined by the tile cover and the base. The annular limiting space is used for being arranged on the periphery of the cylinder sleeve in a sleeving mode. The tiles are arranged between the cylinder sleeve and the inner wall of the annular limiting space. The outer walls of the tiles are tightly attached to the inner wall of the annular limiting space, and the inner walls of the tiles are tightly attached to the outer wall of the cylinder sleeve, so that it is ensured that the cylinder sleeve is stably fixed, and meanwhile indentations can be prevented from being generated on the outer wall of the cylinder sleeve.

Description

Technical Field

[0001] This utility model belongs to the field of cylinder liner fixture technology, specifically relating to a fixture and boring machine for machining the inner hole of a cylinder liner. Background Technology

[0002] In traditional cylinder liner internal bore machining processes, the outer diameter of the cylinder liner is typically held in a lathe chuck, and machining is performed by alternating turning at both ends. This method not only has a long working stroke but also requires the workpiece to undergo two reversals and clamping adjustments, resulting in obvious tool marks on the inner bore. It is difficult to meet high-standard dimensional and positional tolerances, and it also increases labor intensity. Existing boring machine fixtures, when used for machining cylinder liner inner bores, not only easily create indentations on the outer wall of the cylinder liner but also hinder cylinder liner positioning, making it difficult to ensure the concentricity and straightness of the machined cylinder liner. Utility Model Content

[0003] Therefore, the technical problem to be solved by this utility model is to provide a fixture and boring machine for machining the inner hole of a cylinder liner, which can accurately match the cylinder liner size, ensure the cylinder liner is installed firmly, achieve seamless machining of the inner hole, and significantly improve the concentricity and straightness of the cylinder liner machining.

[0004] To address the aforementioned problems, this utility model provides a fixture for machining the inner bore of a cylinder liner, comprising at least two clamping portions. Adjacent clamping portions are spaced apart. Each clamping portion includes a base, a cover, and a tile. The cover is detachably connected to the base, and the cover and base form an annular limiting space. The annular limiting space is used to fit over the outer periphery of the cylinder liner. The tile is disposed between the cylinder liner and the inner wall of the annular limiting space. The outer wall of the tile is tightly fitted against the inner wall of the annular limiting space, and the inner wall of the tile is tightly fitted against the outer wall of the cylinder liner.

[0005] The base includes a base plate and a main body. The main body is mounted on the base plate. A semi-circular groove is provided on the main body. The tile cover is semi-circular in shape. The tile cover is fastened onto the semi-circular groove to form an annular limiting space.

[0006] The semi-circular groove has positioning slots on both sides. The tile cover has positioning blocks on both sides. The positioning blocks are inserted into the positioning slots.

[0007] The base plate and the main body are molded as a single piece.

[0008] The base also includes connecting holes. These connecting holes are located on both sides of the base. The connecting holes have a U-shaped cross-section and an open side. The open side connects to the side of the base.

[0009] The base has a first connecting part, and the cover has a second connecting part. The first connecting part corresponds to the second connecting part. The first connecting part has a threaded hole, and the second connecting part has a through hole. The shank of the bolt passes through the through hole and is connected to the threaded hole to connect the cover to the base.

[0010] The tiles consist of upper tiles and lower tiles. The upper tiles are attached to the roof cover. The lower tiles are attached to the base. There is a gap between the upper and lower tiles.

[0011] The roof tile is equipped with lifting holes.

[0012] The base and roof are made of metal. The roof tiles are made of one of the following materials: metal, rubber, or plastic.

[0013] This utility model also provides a boring machine, including a boring machine body and the above-mentioned fixture for machining the inner hole of the cylinder liner.

[0014] Beneficial effects:

[0015] 1. The fixture for machining cylinder liner inner holes provided by this utility model includes at least two clamping parts. Adjacent clamping parts are spaced apart. Each clamping part includes a base, a cover, and a tile. In use, the base and cover form an annular limiting space, which is then fitted onto the outer circumference of the cylinder liner. A tile is placed between the cylinder liner and the base, and between the cylinder liner and the cover, ensuring a precise fit between the tile and the cylinder liner. This ensures the cylinder liner is stably fixed while preventing indentations on the outer wall of the cylinder liner. Because the clamping parts are spaced apart, the outer wall of the cylinder liner is exposed, facilitating positioning using the outer wall as a reference surface and ensuring the concentricity and straightness of the cylinder liner machining. Furthermore, by changing the tile thickness, it can be applied to cylinder liners of different outer diameters, resulting in a simple structure and wide applicability.

[0016] 2. The boring machine provided by this utility model has the above-mentioned fixture for machining cylinder liner inner holes. Therefore, when machining cylinder liner inner holes, it can effectively improve machining accuracy, reduce machining difficulty, and improve machining efficiency and product quality. Attached Figure Description

[0017] Figure 1 A three-dimensional structural schematic diagram of a fixture for machining the inner hole of a cylinder liner, according to an embodiment of this utility model;

[0018] Figure 2 A schematic diagram of the structure of a base according to an embodiment of this utility model;

[0019] Figure 3 A schematic diagram of the structure of a tile cover according to an embodiment of this utility model;

[0020] Figure 4This is a schematic diagram of the structure of a tile according to one embodiment of the present invention.

[0021] The reference numerals in the attached figures are as follows:

[0022] 1. Clamping part; 2. Cylinder liner;

[0023] 11. Base; 12. Cover; 13. Tile;

[0024] 111. Base plate; 112. Main body; 113. Semi-circular groove; 114. First connecting part; 115. Connecting hole; 116. Positioning groove;

[0025] 121. Second connecting part; 122. Lifting hole; 123. Positioning block;

[0026] 131. Lower tile; 132. Upper tile; 133. Gap. Detailed Implementation

[0027] In the description of this utility model, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", etc., indicating the orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this utility model and simplifying the description, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model.

[0028] Furthermore, 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 number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this utility model, "a plurality of" means two or more, unless otherwise explicitly specified.

[0029] In this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," "linking," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0030] The preferred embodiments of the present invention will be described below with reference to the accompanying drawings. It should be understood that the preferred embodiments described herein are for illustration and explanation only and are not intended to limit the present invention.

[0031] This embodiment provides a fixture for machining the inner bore of a cylinder liner. Figure 1 This is a three-dimensional structural diagram of the fixture used for machining the inner bore of the cylinder liner in this embodiment. Figure 2 This is a schematic diagram of the structure of the base 11 in this embodiment. Figure 3 This is a schematic diagram of the structure of the tile cover 12 in this embodiment. Figure 4 This is a schematic diagram of the structure of tile 13 in this embodiment.

[0032] like Figure 1 As shown, the fixture for machining the inner bore of a cylinder liner in this embodiment includes at least two clamping parts 1. Adjacent clamping parts 1 are spaced apart. Each clamping part 1 includes a base 11, a cover 12, and a tile 13. The cover 12 is detachably connected to the base 11, and the cover 12 and the base 11 form an annular limiting space. The annular limiting space is used to fit around the outer periphery of the cylinder liner 2. The tile 13 is disposed between the cylinder liner 2 and the inner wall of the annular limiting space. The outer wall of the tile 13 is tightly fitted to the inner wall of the annular limiting space, and the inner wall of the tile 13 is tightly fitted to the outer wall of the cylinder liner 2.

[0033] In this embodiment, see Figure 1 The number of clamping parts 1 can be selected according to the length of the cylinder liner. As long as the cylinder liner is effectively supported and fixed and the positioning requirements are met, this embodiment does not impose too many restrictions on this.

[0034] In this embodiment, see Figure 1 The tile 13 and the cylinder liner 2 are either interference fit or clearance fit. For example, the outer diameter of the cylinder liner 2 is... The inner diameter of tile 13 is designed as follows: The cover 12 and the base 11 form an annular limiting space, which is either an interference fit or a clearance fit with the tile 13. For example, the inner diameter of the annular limiting space formed by the cover 12 and the base 11 is... The outer diameter of tile 13 is designed as follows:

[0035] The fixture for machining the inner bore of the cylinder liner provided in this embodiment utilizes the cooperation between the base 11 and the bearing cap 12 to form an annular limiting space, which is then fitted onto the outer periphery of the cylinder liner 2. Bearing plates 13 are placed between the cylinder liner 2 and the base 11, and between the cylinder liner 2 and the bearing cap 12. The bearing plates 13 precisely fit the cylinder liner 2, ensuring stable fixation of the cylinder liner 2 while preventing indentations on its outer wall. Because the clamping parts 1 are spaced apart, the outer wall of the cylinder liner 2 is exposed, facilitating positioning using the outer wall of the cylinder liner 2 as a reference surface, ensuring the concentricity and straightness of the cylinder liner 2 during machining. Furthermore, this embodiment can be adapted to cylinder liners 2 with different outer diameters by replacing the bearing plates 13 of different thicknesses, resulting in a simple structure and wide applicability.

[0036] Among them, such as Figures 1-3 As shown, the base 11 includes a base plate 111 and a main body 112. The main body 112 is disposed on the base plate 111. A semi-circular groove 113 is provided on the main body 112. The cover 12 is semi-circular in shape. The cover 12 is fastened onto the semi-circular groove 113 to form an annular limiting space.

[0037] In this embodiment, as Figure 1 and 2 As shown, the base plate 111 and the main body 112 have the same width in the axial direction of the cylinder liner 2, but in the radial direction of the cylinder liner 2, the width of the base plate 111 is greater than the width of the main body 112, that is, the base plate 11 extends out to the left and right sides of the main body 112. This arrangement facilitates the installation and removal of the base 11 on the boring machine.

[0038] In this embodiment, the base 11 and the cover 12 interlock to form an annular limiting space, and the tile 13 can precisely match the cylinder liner 2 to ensure that the cylinder liner 2 is stably fixed.

[0039] Among them, such as Figures 1-3 As shown, positioning grooves 116 are provided on both sides of the semi-circular groove 113. Positioning blocks 123 are provided on both sides of the cover 12. Positioning blocks 123 are inserted into the positioning grooves 116.

[0040] In this embodiment, see Figures 1-3 The depth of the positioning groove 116 is greater than the height of the positioning block 123 to ensure that the tile cover 12 can be installed in place.

[0041] In this embodiment, the positioning groove 116 and the positioning block 123 are used to achieve the positioning between the base 11 and the tile cover 12, which facilitates the installation of the tile cover 12.

[0042] Among them, such as Figure 2 As shown, the base plate 111 and the main body 112 are integrally formed. This design ensures the structural strength of the base 1 while also reducing the number of processing steps and parts.

[0043] Among them, such as Figure 1 and Figure 2 As shown, the base 11 also includes connecting holes 115. The connecting holes 115 are located on both sides of the base 11. The cross-section of the connecting hole 115 is U-shaped, with an open side. The open side connects to the side of the base 11.

[0044] In this embodiment, as Figure 1 and Figure 2 As shown, the connecting holes 115 are provided on the base plate 111, and the connecting holes 115 are distributed on both sides of the main body 112. This arrangement enables the base 1 to be subjected to balanced force and stably connected to the machining platform of the boring machine.

[0045] In this embodiment, the connection hole 115 is designed as U, with an opening, which facilitates the connection and fixation between the base 1 and the boring machine, and also facilitates position adjustment, which is beneficial for the positioning of the cylinder liner 2.

[0046] Among them, such as Figures 1-3 As shown, the base 11 has a first connecting portion 114. The cover 12 has a second connecting portion 121. The first connecting portion 114 corresponds to the second connecting portion 121. The first connecting portion 114 has a threaded hole. The second connecting portion 121 has a through hole. The shank of the bolt passes through the through hole in the second connecting portion 121 and connects to the threaded hole in the first connecting portion 114 to connect the cover 12 to the base 11.

[0047] In this embodiment, as Figure 2 As shown, the first connecting portion 114 is disposed on the left and right sides of the main body portion 112 and near the top surface of the main body portion 112. Figure 3 As shown, the second connecting part 121 is provided on the left and right sides of the tile cover 12 and near the bottom of the tile cover 12.

[0048] In this embodiment, the base 11 and the cover 12 are connected by the first connecting part 114, the second connecting part 121 and bolts, which facilitates installation and disassembly.

[0049] Among them, such as Figure 4 As shown, the tile 13 includes an upper tile 132 and a lower tile 131. The upper tile 132 is attached to the tile cover 12. The lower tile 131 is attached to the base 11. There is a gap 133 between the upper tile 132 and the lower tile 131. This arrangement ensures that the upper tile 132 and the lower tile 131 are tightly gripped by the tile cover 12 and the base 11.

[0050] Among them, such as Figure 3 As shown, the tile cover 12 is provided with a lifting hole 122. This facilitates the lifting of the tile cover 12 and reduces the difficulty of installation.

[0051] Among them, see Figure 1The base 11 and the cover 12 are made of metal. The tile 13 is made of metal, rubber, or plastic. For example, the base 11 and the cover 12 are made of alloy, and the tile 13 is made of rubber.

[0052] The structure of the fixture for machining the inner bore of cylinder liners in this embodiment has been described above. Next, the method of using the fixture for machining the inner bore of cylinder liners in this embodiment will be described, as follows: Figures 1-4 As shown:

[0053] The bases 11 of the two clamping parts 1 are placed at intervals on the machining platform of the boring machine, and the two bases 11 are approximately coaxial;

[0054] Then place the lower tile 131 into the semi-circular groove 113 on the base 11;

[0055] Place the cylinder liner 2 in the lower tile 131 on the two bases 11;

[0056] Place the upper tile 132 on the cylinder liner 2, corresponding to the position of the lower tile 131;

[0057] Hoist the tile cover 12 above the base 11, lower the tile cover 12 and adjust its position so that the positioning block 123 is inserted into the positioning groove 116;

[0058] The cover 12 is connected to the base 11 by the cooperation of the first connecting part 114, the second connecting part 121 and the bolt, so that the upper tile 132 and the lower tile 131 hold the cylinder liner 2 tightly under the fastening action of the cover 12 and the base 11.

[0059] The base 1 is roughly fixed to the machining platform of the boring machine by means of the connecting holes 115 on the base plate 111 and the bolts;

[0060] Using the outer wall of cylinder liner 2 as a reference surface, cylinder liner 2 is positioned. The position of base 11 is adjusted so that the axis of cylinder liner 2 is parallel to the axis of boring machine. Then, base 11 is fixed on the machining platform of boring machine for machining of inner hole.

[0061] Using the fixture in this embodiment in conjunction with a boring machine to machine the inner hole of the cylinder liner can avoid obvious tool marks on the inner hole and avoid indentations on the outer wall of the cylinder liner 2. It also facilitates the accurate positioning of the cylinder liner 2 and ensures the concentricity and straightness of the inner and outer sides of the cylinder liner 2.

[0062] This embodiment also provides a boring machine, including a boring machine body and the fixture for machining the cylinder liner inner hole in the above embodiment.

[0063] The boring machine provided by this utility model has the above-mentioned fixture for machining cylinder liner inner holes. Therefore, when machining cylinder liner inner holes, it has all the above-mentioned beneficial effects, which can effectively improve machining accuracy, reduce machining difficulty, improve machining efficiency and product quality.

[0064] It will be readily understood by those skilled in the art that the aforementioned advantageous methods can be freely combined and superimposed without conflict.

[0065] The above are merely preferred embodiments of this utility model and are not intended to limit the scope of this utility model. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of this utility model should be included within the protection scope of this utility model. The above are only preferred embodiments of this utility model. It should be noted that for those skilled in the art, several improvements and modifications can be made without departing from the technical principles of this utility model, and these improvements and modifications should also be considered within the protection scope of this utility model.

Claims

1. A fixture for machining the inner bore of a cylinder liner, characterized in that, include: At least two clamping parts; adjacent clamping parts are spaced apart; each clamping part includes a base, a cover, and a tile; The cover is detachably connected to the base, and the cover and the base form an annular limiting space; the annular limiting space is used to fit on the outer periphery of the cylinder liner; the tile is disposed between the cylinder liner and the inner wall of the annular limiting space; the outer wall of the tile is tightly fitted with the inner wall of the annular limiting space, and the inner wall of the tile is tightly fitted with the outer wall of the cylinder liner.

2. The fixture for machining cylinder liner inner holes according to claim 1, characterized in that, The base includes a base plate and a main body; the main body is disposed on the base plate; a semi-circular groove is provided on the main body; The tile cover is semi-circular in shape; the tile cover is fastened onto the semi-circular groove to form the annular limiting space.

3. The fixture for machining cylinder liner inner holes according to claim 2, characterized in that, The semi-circular groove is provided with positioning grooves on both sides; the tile cover is provided with positioning blocks on both sides. The positioning block is inserted into the positioning slot.

4. The fixture for machining cylinder liner inner holes according to claim 2, characterized in that, The base plate and the main body are integrally formed.

5. The fixture for machining cylinder liner inner holes according to claim 1, characterized in that, The base also includes connecting holes; the connecting holes are located on both sides of the base; the cross-section of the connecting hole is U-shaped and has an open side; the open side communicates with the side of the base.

6. The fixture for machining cylinder liner inner holes according to claim 1, characterized in that, The base is provided with a first connecting part; the cover is provided with a second connecting part; the first connecting part and the second connecting part correspond to each other; The first connecting part is provided with a threaded hole; the second connecting part is provided with a through hole; The shank of the bolt passes through the through hole and is connected to the threaded hole to connect the cover to the base.

7. The fixture for machining cylinder liner inner holes according to claim 1, characterized in that, The tiles include upper tiles and lower tiles; The upper tile is attached to the tile cover; the lower tile is attached to the base; There is a gap between the upper tile and the lower tile.

8. The fixture for machining cylinder liner inner holes according to claim 1, characterized in that, The tile cover is equipped with lifting holes.

9. The fixture for machining cylinder liner inner holes according to claim 1, characterized in that, The base and the roof are made of metal; the tiles are made of metal, rubber or plastic.

10. A boring machine, characterized in that, It includes a boring machine body and a fixture for machining the inner bore of a cylinder liner as described in any one of claims 1 to 9.

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