Cylinder liner bearing hole processing equipment and its cutter

Abstract

The present disclosure provides a cylinder bearing hole machining device and a cutter thereof. The cylinder bearing hole machining cutter comprises a machining bearing sleeve and a machining cutter head. The machining cutter head comprises a cutter head body and a plurality of metal ceramic blades. The plurality of metal ceramic blades are arranged around the outer wall of the cutter head body. The machining bearing sleeve is provided with a first cooling channel. The cutter head body is provided with a second cooling channel. The first cooling channel is communicated with the second cooling channel. The outlet of the second cooling channel is adjacent to the metal ceramic blades. The metal ceramic blades can be suitable for machining the cylinder sleeve made of steel block, cast iron block and other materials. The metal ceramic has good heat resistance and is not easy to react with the iron element of the steel block and the cast iron block at high temperature, so as to not easily produce iron filings and adhere to the metal ceramic blades, thereby ensuring the service life of the cutter. In addition, the cylinder bearing hole machining cutter also adopts an internal spraying cooling mode to flush away the debris generated during machining by the cooling liquid when machining the bearing hole, thereby enhancing the anti-sticking property of the metal ceramic blades.

Description

Technical Field

[0001] This disclosure relates to the field of cylinder liner machining technology, and in particular to a cylinder liner bearing hole machining equipment and its cutting tool. Background Technology

[0002] A PCD boring bar is a precision boring tool that uses polycrystalline diamond (PCD) as the cutting edge material. It represents a certain degree of wear resistance when machining non-metallic materials or parts in the field of high-precision and high-efficiency machining. Even if the boring bar temperature rises, the diamond in the PCD boring bar is not easy to react with the non-metal, that is, the PCD boring bar is not easy to wear for non-metallic materials or parts.

[0003] However, when machining metal parts such as steel blocks and cast iron blocks, diamonds interact with these parts, generating heat and causing the temperature to rise. At high temperatures, diamonds are prone to react with elements such as iron, which reduces the performance of the cutting tool. At the same time, the generated iron filings adhere to the PCD boring tool, affecting the tool's lifespan and also affecting the machining accuracy of cylinder liner bearing holes.

[0004] Therefore, how to solve the stability problem in the machining of metal parts and the problem of tool breakage are still problems that need to be solved by those skilled in the art. Utility Model Content

[0005] The purpose of this disclosure is to overcome the shortcomings of the prior art and provide a cylinder liner bearing hole machining equipment and its cutting tools that can ensure tool life and cylinder liner bearing hole machining accuracy when machining steel blocks or cast iron blocks.

[0006] The purpose of this disclosure is achieved through the following technical solution: A tool for machining cylinder liner bearing holes, comprising: Machining bearing sleeves for installation on the drive shaft of cylinder liner bearing hole machining equipment; A machining head includes a head body and multiple metal-ceramic blades. The head body is connected to the machining bearing sleeve, and the multiple metal-ceramic blades are arranged around the outer wall of the head body and are located away from the machining bearing sleeve. The machining bearing sleeve has a first cooling channel, and the cutter head body has a second cooling channel. The first cooling channel is connected to the second cooling channel, and the outlet of the second cooling channel is located near the metal-ceramic cutting tool.

[0007] In one embodiment, the second cooling channel includes a main cooling channel and a plurality of branch cooling channels. The first cooling channel is connected to one end of the main cooling channel, and the other end of the main cooling channel is connected to the plurality of branch cooling channels. The outlets of the plurality of branch cooling channels are arranged around the outer wall of the cutter head body, and the outlets of the plurality of branch cooling channels and the plurality of metal-ceramic blades are alternately arranged around the outer wall of the cutter head body.

[0008] In one embodiment, the cross-sectional diameter of the main cooling channel is larger than the cross-sectional diameter of the branch cooling channel.

[0009] In one embodiment, multiple metal-ceramic blades protrude from the outer wall of the blade body.

[0010] In one embodiment, the cross-sectional diameter of the cutter head body is 70-72 mm.

[0011] In one embodiment, the metal-ceramic blade has a vertical area, a chamfered area, and a horizontal area arranged in sequence.

[0012] In one embodiment, the angle between the extending direction of the vertical region and the extending direction of the chamfered region is in the range of 45°-48°.

[0013] In one embodiment, the angle between the extension direction of the horizontal region and the extension direction of the chamfered region is in the range of 42°-45°.

[0014] A cylinder liner bearing hole machining equipment includes the cylinder liner bearing hole machining tool described in any embodiment.

[0015] Compared with the prior art, this disclosure has at least the following advantages: The aforementioned cylinder liner bearing hole machining tool uses cermet inserts, which are suitable for machining cylinder liners made of materials such as steel blocks and cast iron blocks. Among them, cermet has better heat resistance than PCD material, and it is less likely to react with the iron elements in steel blocks and cast iron blocks at high temperatures, thus reducing the generation of iron filings that adhere to the cermet inserts. This makes it suitable for high-speed cutting, reduces thermal deformation, and ensures tool life. When machining cylinder liner bearing holes, it can ensure the machining accuracy of the cylinder liner bearing holes. In addition, the cylinder liner bearing hole machining tool also adopts an internal spray cooling method, so that the coolant can wash away the machining debris generated during the machining of the bearing holes, enhancing the anti-sticking properties of the cermet inserts. Attached Figure Description

[0016] To more clearly illustrate the technical solutions of the embodiments of this disclosure, the accompanying drawings used in the embodiments will be briefly described below. It should be understood that the following drawings only show some embodiments of this disclosure and should not be regarded as a limitation of the scope. For those skilled in the art, other related drawings can be obtained based on these drawings without creative effort.

[0017] Figure 1 This is a schematic diagram of the structure of the tool for machining the cylinder liner bearing hole in one embodiment; Figure 2 for Figure 1 The image shows a partial enlarged view of the cylinder liner bearing hole machining tool at point A. Figure 3 for Figure 1 The diagram shows a cross-sectional view of the tool used for machining cylinder liner bearing holes. Figure 4 for Figure 1 The image shows the actual cutting tool corresponding to the cylinder liner bearing hole machining tool.

[0018] Reference numerals: 10, Cylinder liner bearing hole machining tool; 100, Machining bearing sleeve; 101, First cooling channel; 200, Machining tool head; 210, Tool head body; 211, Second cooling channel; 2111, Main cooling channel; 2112, Diverted cooling channel; 220, Ceramic insert; 221, Vertical area; 222, Chamfering area; 223, Horizontal area. Detailed Implementation

[0019] To facilitate understanding of this disclosure, a more complete description will be given below with reference to the accompanying drawings, which illustrate preferred embodiments of the present disclosure. However, this disclosure can be implemented in many different forms and is not limited to the embodiments described herein. Rather, these embodiments are provided to provide a more thorough and complete understanding of the disclosure.

[0020] It should be noted that when an element is referred to as being "fixed to" another element, it can be directly attached to the other element or there may be an intervening element. When an element is referred to as being "connected to" another element, it can be directly connected to the other element or there may be an intervening element. The terms "vertical," "horizontal," "left," "right," and similar expressions used herein are for illustrative purposes only and do not represent the only possible implementation.

[0021] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this disclosure belongs. The terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of this disclosure. The term "and / or" as used herein includes any and all combinations of one or more of the associated listed items.

[0022] To better understand the technical solutions and beneficial effects of this disclosure, the following detailed description is provided in conjunction with specific embodiments: Please see Figures 1 to 3 This is a cylinder liner bearing hole machining tool 10 according to an embodiment of the present invention, including a machining bearing sleeve 100 and a machining head 200. The machining bearing sleeve 100 is used to be mounted on the drive shaft of the cylinder liner bearing hole machining equipment. The machining head 200 includes a head body 210 and a plurality of metal-ceramic blades 220. The head body 210 is connected to the machining bearing sleeve 100. The plurality of metal-ceramic blades 220 are arranged around the outer wall of the head body 210 and are arranged away from the machining bearing sleeve 100. The machining bearing sleeve 100 has a first cooling channel 101 and the head body 210 has a second cooling channel 211. The first cooling channel 101 and the second cooling channel 211 are connected. The outlet of the second cooling channel 211 is located near the metal-ceramic blades 220 so that during the cylinder liner bearing hole machining step, the coolant passes through the first cooling channel 101 and the second cooling channel 211 in sequence, thereby effectively cooling the metal-ceramic blades 220. Figure 4 This is a physical image of the cylinder liner bearing hole machining tool 10 according to an embodiment of the present invention, so that those skilled in the art can understand the solution.

[0023] In the above embodiments, the cylinder liner bearing hole machining tool 10 uses a cermet insert 220, which is suitable for machining cylinder liners made of materials such as steel blocks and cast iron blocks. Among them, cermet has better heat resistance than PCD material, and it is not easy to react with the iron element in steel blocks and cast iron blocks at high temperatures, so it is not easy to generate iron filings and adhere to the cermet insert 220. This makes it suitable for high-speed cutting, reduces thermal deformation, and ensures tool life. When machining cylinder liner bearing holes, it can ensure the machining accuracy of cylinder liner bearing holes. In addition, the cylinder liner bearing hole machining tool 10 also adopts an internal spray cooling method so that the coolant can wash away the debris generated during machining of the bearing hole, enhancing the anti-sticking properties of the cermet insert 220.

[0024] like Figure 3As shown, in one embodiment, the second cooling channel 211 includes a main cooling channel 2111 and a plurality of branch cooling channels 2112. The first cooling channel 101 is connected to one end of the main cooling channel 2111, and the other end of the main cooling channel 2111 is connected to the plurality of branch cooling channels 2112. The outlets of the plurality of branch cooling channels 2112 are arranged around the outer wall of the cutter head body 210, and the outlets of the plurality of branch cooling channels 2112 and the plurality of metal-ceramic blades 220 are alternately arranged around the outer wall of the cutter head body 210. It can be understood that when machining the cylinder liner bearing hole, the metal-ceramic blades act on the inner wall of the bearing hole for fine machining. The coolant first flows from the first cooling channel 101, then through the main cooling channel 2111, and then is branched, that is, the coolant will flow to the plurality of branch cooling channels 2112, and finally flow out from the branch cooling channels 2112, cooling the corresponding adjacent metal-ceramic blades 220 and ensuring the stability of the cylinder liner bearing hole machining.

[0025] Furthermore, the cross-sectional diameter of the main cooling channel 2111 is larger than that of the branch cooling channel 2112 to control the flow rate of the coolant, thereby fully cooling the metal-ceramic blade 220 and ensuring the stability of the cylinder liner bearing hole machining.

[0026] In one embodiment, a plurality of metal-ceramic blades 220 protrude from the outer wall of the cutter head body 210 so that when machining cylinder liner bearing holes, the plurality of metal-ceramic blades 220 can better act on the bearing hole wall, especially the bearing hole wall made of steel block or cast iron block.

[0027] In one embodiment, the cross-sectional diameter of the cutter head body 210 is 70-72 mm. Further, the cross-sectional diameter of the cutter head body 210 is 70 mm.

[0028] like Figure 2 As shown, in one embodiment, the cermet insert 220 has a vertical region 221, a chamfered region 222, and a horizontal region 223 arranged sequentially. It can be understood that during the machining of the cylinder liner bearing hole, the machining tool 10 moves vertically. The vertical region 221 is parallel to the straight line formed by the first cooling channel 101 and the second cooling channel 211, and the horizontal region 223 is perpendicular to the straight line formed by the first cooling channel 101 and the second cooling channel 211. A certain angle exists between the chamfered region 222 and the vertical region 221, and between the chamfered region 222 and the horizontal region 223. Thus, the chamfered region 222 effectively reduces the probability of chipping at the junction of the vertical region 221 and the horizontal region 223, thereby dispersing the stress at the junction of the vertical region 221 and the horizontal region 223 and ensuring the stability of the machined cylinder liner bearing hole.

[0029] In one embodiment, the angle formed by the extending direction of the vertical region 221 and the extending direction of the chamfered region 222 is in the range of 45°-48°. Further, the angle formed by the extending direction of the vertical region 221 and the extending direction of the chamfered region 222 is in the range of 45°.

[0030] In one embodiment, the angle formed by the extending direction of the horizontal region 223 and the extending direction of the chamfered region 222 is in the range of 42°-45°. Further, the angle formed by the extending direction of the horizontal region 223 and the extending direction of the chamfered region 222 is in the range of 45°.

[0031] This disclosure also provides a cylinder liner bearing hole machining equipment, including the cylinder liner bearing hole machining tool 10 described in any embodiment.

[0032] Compared with the prior art, this disclosure has at least the following advantages: The aforementioned cylinder liner bearing hole machining tool 10 uses a cermet insert 220, which is suitable for machining cylinder liners made of materials such as steel blocks and cast iron blocks. Among them, cermet has better heat resistance than PCD material, and it is not easy to react with the iron elements in steel blocks and cast iron blocks at high temperatures, thus it is not easy to generate iron filings and adhere to the cermet insert 220. This makes it suitable for high-speed cutting, reduces thermal deformation, and ensures tool life. When machining cylinder liner bearing holes, it can ensure the machining accuracy of the cylinder liner bearing holes. In addition, the cylinder liner bearing hole machining tool 10 also adopts an internal spray cooling method, so that the coolant can wash away the chips generated during machining of the bearing holes, enhancing the anti-sticking properties of the cermet insert 220.

[0033] The embodiments described above are merely illustrative of several implementations of this disclosure, and while the descriptions are specific and detailed, they should not be construed as limiting the scope of the disclosed patent. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this disclosure, and these all fall within the protection scope of this disclosure. Therefore, the protection scope of this patent should be determined by the appended claims.

Claims

1. A tool for machining cylinder liner bearing holes, characterized in that, include: Machining bearing sleeves for installation on the drive shaft of cylinder liner bearing hole machining equipment; A machining head includes a head body and multiple metal-ceramic blades. The head body is connected to the machining bearing sleeve, and the multiple metal-ceramic blades are arranged around the outer wall of the head body and are located away from the machining bearing sleeve. The machining bearing sleeve has a first cooling channel, and the cutter head body has a second cooling channel. The first cooling channel is connected to the second cooling channel, and the outlet of the second cooling channel is located near the metal-ceramic cutting tool.

2. The cylinder liner bearing hole machining tool according to claim 1, characterized in that, The second cooling channel includes a main cooling channel and multiple branch cooling channels. The first cooling channel is connected to one end of the main cooling channel, and the other end of the main cooling channel is connected to multiple branch cooling channels. The outlets of the multiple branch cooling channels are arranged around the outer wall of the cutter head body, and the outlets of the multiple branch cooling channels and the multiple metal-ceramic blades are alternately arranged around the outer wall of the cutter head body.

3. The cylinder liner bearing hole machining tool according to claim 2, characterized in that, The cross-sectional diameter of the main cooling channel is larger than that of the branch cooling channel.

4. The cylinder liner bearing hole machining tool according to claim 1, characterized in that, Multiple metal-ceramic blades protrude from the outer wall of the blade body.

5. The cylinder liner bearing hole machining tool according to claim 1, characterized in that, The cross-sectional diameter of the cutter head body is 70-72mm.

6. The cylinder liner bearing hole machining tool according to claim 1, characterized in that, The metal-ceramic blade has a vertical area, a chamfered area, and a horizontal area arranged in sequence.

7. The cylinder liner bearing hole machining tool according to claim 6, characterized in that, The angle between the extension direction of the vertical region and the extension direction of the chamfered region is in the range of 45°-48°.

8. The cylinder liner bearing hole machining tool according to claim 6, characterized in that, The angle between the extension direction of the horizontal region and the extension direction of the chamfered region is in the range of 42°-45°.

9. A cylinder liner bearing hole machining equipment, characterized in that, Includes the cylinder liner bearing hole machining tool as described in any one of claims 1-8.

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