A pipe thread machining assembly and method of assembling a machining assembly

Abstract

This invention provides a pipe thread processing assembly, comprising: multiple rolling rollers, each rolling roller including a rolling roller body, a rolling roller sleeve, and a rolling roller bearing; the rolling roller body having an approximately frustum-shaped structure; the rolling roller sleeve being installed within one end of the lower bottom surface of the rolling roller body; and the rolling roller bearing being installed within one end of the upper bottom surface of the rolling roller body; and multiple thread rolling wheels, each thread rolling wheel including a thread rolling wheel body, a thread rolling roller sleeve, and a thread rolling roller bearing; the thread rolling wheel body having an approximately frustum-shaped structure; the thread rolling roller sleeve being installed within one end of the upper bottom surface of the thread rolling wheel body; and the thread rolling roller bearing being installed within one end of the lower bottom surface of the thread rolling wheel body. This pipe thread processing assembly can reduce wear and seizing on the surfaces of the rolling rollers and thread rolling wheels, thus mitigating damage to the rolling rollers and thread rolling wheels caused by seizing.

Description

Technical Field

[0001] This invention relates to the field of pipe thread processing technology, and in particular to a pipe thread processing assembly and a method for assembling the assembly. Background Technology

[0002] Compared to cut pipe threads, rolled external threads offer significant advantages such as stable quality, superior sealing performance, and higher mechanical connection strength. The formation of external threads on pipes involves two production processes: the first is a tapered forming process using a rolling structure, and the second is a thread rolling process using a thread rolling structure to complete the tapered portion. During the different time intervals of these cold forming processes—specifically, during the tapering and thread rolling processes—the pressure on the rolling and thread rolling wheels gradually changes, and the pressure gradients are not identical. The interaction between a single rolling wheel and / or thread rolling wheel and its shaft can lead to excessive wear on the mating surfaces of the rolling and / or thread rolling wheel and the pipe, potentially causing the wheel to become unable to rotate. Summary of the Invention

[0003] In view of the shortcomings of the prior art described above, the purpose of this invention is to provide a pipe thread processing assembly and an assembly method for the processing assembly. This invention can reduce the wear and seizing of the surfaces of the rolling roller and the thread rolling wheel, thereby reducing the damage to the rolling roller and the thread rolling wheel and improving their service life.

[0004] To achieve the above and other related objectives, the present invention provides a pipe threading assembly, comprising:

[0005] Multiple rolling rollers, each rolling roller comprising a rolling roller body, a rolling roller sleeve, and a rolling roller bearing; the rolling roller body has an approximately frustum-shaped structure; the rolling roller sleeve is installed inside one end of the lower bottom surface of the rolling roller body; and the rolling roller bearing is installed inside one end of the upper bottom surface of the rolling roller body.

[0006] Multiple thread rolling wheels, each thread rolling wheel including a thread rolling wheel body, a thread rolling bushing, and a thread rolling bearing. The thread rolling wheel body has an approximately frustum-shaped structure. The thread rolling bushing is installed inside one end of the upper bottom surface of the thread rolling wheel body, and the thread rolling bearing is installed inside one end of the lower bottom surface of the thread rolling wheel body.

[0007] In one embodiment of the present invention, a plurality of lubrication grooves are formed on the inner wall surface of the rolling bushing and the thread rolling bushing.

[0008] In one embodiment of the present invention, the processing component further includes:

[0009] Roller seat; and

[0010] Multiple rolling roller shafts are provided on the rolling roller seat, and the rolling rollers are rotatably mounted on the rolling roller shafts.

[0011] In one embodiment of the present invention, the rolling roller body and the rolling bushing are interference-fitted, the rolling bushing and the rolling roller shaft are clearance-fitted, the rolling roller body and the outer ring of the rolling bearing are interference-fitted, and the inner ring of the rolling bearing and the rolling roller shaft are interference-fitted.

[0012] In one embodiment of the present invention, the axial installation clearance between the rolling bushing and the rolling wheel shaft is in the range of 0.1~0.5mm.

[0013] In one embodiment of the present invention, the processing component further includes:

[0014] Thread rolling wheel seat; and

[0015] Multiple thread rolling wheel shafts are provided on the thread rolling wheel seat, and the thread rolling wheel is rotatably mounted on the thread rolling wheel shaft.

[0016] In one embodiment of the present invention, the thread rolling wheel body and the thread rolling bushing are interference-fitted, the thread rolling bushing and the thread rolling wheel shaft are clearance-fitted, the thread rolling wheel body and the thread rolling bearing are interference-fitted, and the inner ring of the thread rolling bearing is interference-fitted with the thread rolling wheel shaft.

[0017] In one embodiment of the present invention, the axial installation clearance between the thread rolling bushing and the thread rolling wheel shaft is in the range of 0.1~0.5mm.

[0018] In one embodiment of the present invention, the rolling bushing is a copper bushing, the rolling bearing is a turnbuckle needle roller bearing, the thread rolling bushing is a copper bushing, and the thread rolling bearing is a turnbuckle needle roller bearing.

[0019] The present invention also provides a method for assembling a processing component, applied in the aforementioned pipe thread processing component, comprising the following steps:

[0020] The rolling bearing is installed at one end of the upper bottom surface of the rolling wheel body;

[0021] The rolling bushing is installed at one end of the lower bottom surface of the rolling wheel body;

[0022] The thread rolling bearing is mounted on one end of the lower bottom surface of the thread rolling wheel body; and

[0023] The thread rolling bushing is installed at one end of the upper bottom surface of the thread rolling wheel body.

[0024] As described above, the present invention provides a pipe threading assembly. During the pipe processing, the rolling bushing and the thread rolling bushing bear most of the pressure, and the rolling bearing and the thread rolling bearing reduce wear, thereby protecting the structure of the rolling wheel and the thread rolling wheel and extending their service life. Attached Figure Description

[0025] To more clearly illustrate the technical solutions of the embodiments of the present invention, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0026] Figure 1 The diagram shown is a schematic diagram of the rolling structure in a pipe thread processing assembly according to the present invention.

[0027] Figure 2 The diagram shown is a structural schematic of the rolling roller in a pipe thread processing assembly according to the present invention.

[0028] Figure 3 The image shown is an exploded view of the rolling roller in a pipe thread processing assembly according to the present invention.

[0029] Figure 4 The diagram shown is a schematic diagram of the thread rolling structure in a pipe thread processing assembly according to the present invention.

[0030] Figure 5 The diagram shown is an exploded view of the thread rolling structure in a pipe thread processing assembly according to the present invention.

[0031] Figure 6 The diagram shown is a structural schematic of the thread rolling wheel in a pipe thread processing assembly according to the present invention.

[0032] Figure 7 The image shown is an exploded view of the thread rolling wheel in a pipe threading assembly according to the present invention.

[0033] Figure 8 The diagram shows the force applied to the rolling roller in a pipe thread processing assembly according to the present invention.

[0034] Figure 9 The diagram shows the force applied to the thread rolling wheel in a pipe thread processing assembly according to the present invention.

[0035] Figure 10 The flowchart shown is a method for assembling a processing component according to the present invention.

[0036] Component designation explanation:

[0037] 10. Rolling structure; 11. Rolling roller seat; 12. Rolling roller; 121. Rolling roller body; 122. Rolling bushing; 123. Rolling bearing;

[0038] 20. Thread rolling structure; 21. Thread rolling wheel seat; 22. Thread rolling wheel; 221. Thread rolling wheel body; 222. Thread rolling bushing; 223. Thread rolling bearing;

[0039] 30. Pipes. Detailed Implementation

[0040] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0041] Please see Figure 1 , Figure 4 As shown, this invention provides a pipe threading assembly that can process a pipe 30 to form an external thread on the surface of the pipe 30. The pipe 30 can be a hollow blank that undergoes cold forming. The pipe 30 can include not only metal pipes such as steel pipes, aluminum pipes, and copper pipes, but also metal workpieces with hollow tubular structures such as pipe fittings and tees, and other plastic pipes or workpieces with similar shapes that can be cold formed. The processing assembly can include a rolling structure 10 and a thread rolling structure 20. During the processing of the external thread of the pipe 30, one end of the pipe 30 can first be tapered using the rolling structure 10 to form an external taper portion at one end of the pipe 30. Then, the thread rolling structure 20 can be used to roll the taper portion to form the external thread. The external thread can be an existing national standard, international standard, enterprise standard, or an external thread with actual use function.

[0042] Please see Figure 1As shown, in one embodiment of the present invention, the rolling structure 10 may include a rolling wheel seat 11 and a rolling wheel 12. The rolling wheel seat 11 may be disposed on the machine base body, and a rolling wheel shaft may be provided on the rolling wheel seat 11. The rolling wheel 12 may be rotatably mounted on the rolling wheel shaft. The number of rolling wheel shafts may be multiple, for example, three, four, five, six, etc. Multiple rolling wheel shafts may be disposed on the rolling wheel seat 11. Multiple rolling wheel shafts may be disposed on the rolling wheel seat 11 at equal angular intervals along a ring, and multiple rolling wheel shafts may be located on the same edge of a circle. For example, when the number of rolling wheel shafts is three, the three rolling wheel shafts may form an equilateral triangle, and the rolling wheel shafts may be located at the endpoints of this equilateral triangle. As another example, when the number of rolling wheel shafts is four, the four rolling wheel shafts may form a square, and the rolling wheel shafts may be located at the endpoints of this square. That is, when there are multiple rolling roller shafts, the multiple rolling roller shafts can form a regular polygon shape, and the rolling roller shafts can be located at the endpoints of this regular polygon. The number of rolling rollers 12 can be the same as the number of rolling roller shafts, that is, each rolling roller shaft has a rolling roller 12 rotating on it. However, it is not limited to this, and the number of rolling rollers 12 can also be less than the number of rolling roller shafts. The multiple rolling rollers 12 can form a regular polygon shape, and the axes of the multiple rolling rollers 12 can be located on the side of the same circle.

[0043] Please see Figure 2 and Figure 3As shown, in one embodiment of the present invention, the rolling roller 12 may include a rolling roller body 121, a rolling roller sleeve 122, and a rolling roller bearing 123. The rolling roller body 121 may be a frustum-shaped structure with a circular opening in its center, allowing it to be rotatably mounted on the rolling roller shaft through the circular opening. The rolling roller sleeve 122 may be a copper sleeve, using copper alloy materials such as beryllium copper, which possesses advantages such as high strength, elasticity, hardness, wear resistance, fatigue resistance, and heat resistance. The rolling roller sleeve 122 may be installed within the circular opening of the rolling roller body 121, with an H7 / N6 interference fit between them. A clearance fit may be available between the rolling roller sleeve 122 and the rolling roller shaft, with an axial installation clearance between them ranging from 0.1 to 0.5 mm, for example, 0.1 mm, 0.25 mm, or 0.5 mm. The rolling roller bearing 123 may also be installed within the circular opening of the rolling roller body 121. The rolling bearing 123 can be a turnbuckle bearing, which has advantages such as quiet operation, high speed, and durability. The outer ring of the rolling bearing 123 can be interference-fitted with the rolling wheel body 121, and the inner ring of the rolling bearing 123 can also be interference-fitted with the rolling wheel shaft. The rolling bushing 122 can be located at one end of the lower bottom surface of the rolling wheel body 121, and the rolling bearing 123 can be located at one end of the upper bottom surface of the rolling wheel body 121. However, it is not limited to this; the rolling bushing 122 can be located at one end of the upper bottom surface of the rolling wheel body 121, and the rolling bearing 123 can be located at one end of the lower bottom surface of the rolling wheel body 121. The rolling bushing 122 can be a sleeve, and the rolling bearing 123 can be a component that fixes and reduces the coefficient of friction of the load during mechanical transmission. The rolling bushing 122 and the rolling bearing 123 are similar in that both bear the load of the rolling wheel shaft. The difference between the rolled bushing 122 and the rolled bearing 123 is that the rolled bushing 122 is an integral structure, and there is relative movement between the rolled wheel shaft and the rolled bushing 122 when it rotates, while the rolled bearing 123 is a split structure, and there is relative movement between the inner and outer rings of the rolled bearing 123 when it rotates.

[0044] Please see Figure 2 and Figure 3As shown, in one embodiment of the present invention, when the rolling bushing 122 acts between the rolling roller body 121 and the rolling roller shaft, the rolling bushing 122 can play a fixing, positioning, and sliding bearing role, etc., and can be used to fix the center positioning of the rolling roller shaft and prevent the rolling bearing 123 from shifting due to vibration during operation. To save materials, the wall thickness of the rolling bushing 122 can be designed according to the axial load required by the rolling bearing 123. The rolling bushing 122 can be made of cast copper and bearing alloy materials. The rolling bushing 122 can be divided into open structure and closed structure. When the rolling bushing 122 cannot bear the axial load, or can only bear a small axial load, or when a thrust bearing is added, the rolling bushing 122 can be a cylindrical structure. The rolling bushing 122 can be used to replace the rolling bearing in some applications with low speed, high radial load and high clearance requirements. The material of the rolling bushing 122 is required to be low in hardness and wear-resistant. The inner hole of the rolling bushing 122 is ground and scraped to achieve high fitting accuracy. The inner wall of the rolled bushing 122 can be provided with oil grooves for lubrication. For example, when installing the rolled bushing 122, the inner wall of the rolled bushing 122 can be scraped, which can form multiple lubrication grooves on the inner surface of the rolled bushing 122 to enhance the lubrication function. The shape of the lubrication grooves is not limited, and can be, for example, figure-eight shaped, rectangular, or circular.

[0045] Please see Figure 4 and Figure 5 As shown, in one embodiment of the present invention, the thread rolling structure 20 may include a thread rolling wheel seat 21 and a thread rolling wheel 22. The thread rolling wheel seat 21 may be disposed on the machine base body, and a thread rolling wheel shaft may be provided on the thread rolling wheel seat 21. The thread rolling wheel 22 may be rotatably mounted on the rolling wheel shaft. The number of thread rolling wheel shafts may be multiple, for example, three, four, five, six, etc. Multiple thread rolling wheel shafts may be disposed on the thread rolling wheel seat 21. Multiple thread rolling wheel shafts may be arranged at equal angular intervals along a ring on the thread rolling wheel seat 21, and multiple thread rolling wheel shafts may be located on the same edge of the circle. For example, when the number of thread rolling wheel shafts is three, the three thread rolling wheel shafts may form an equilateral triangle, and the thread rolling wheel shafts may be located at the endpoints of this equilateral triangle. As another example, when the number of thread rolling wheel shafts is four, the four thread rolling wheel shafts may form a square, and the thread rolling wheel shafts may be located at the endpoints of this square. That is, when there are multiple thread rolling shafts, the multiple thread rolling shafts can form a regular polygon shape, and the thread rolling shafts can be located at the endpoints of this regular polygon. The number of thread rolling wheels 22 can be the same as the number of thread rolling shafts, that is, each thread rolling shaft has one thread rolling wheel 22 rotating on it. However, it is not limited to this, and the number of thread rolling wheels 22 can also be less than the number of thread rolling shafts. The multiple thread rolling wheels 22 can form a regular polygon shape, and the axes of the multiple thread rolling wheels 22 can be located on the side of the same circle.

[0046] Please see Figure 6 and Figure 7 As shown, in one embodiment of the present invention, the thread rolling wheel 22 may include a thread rolling wheel body 221, a thread rolling bushing 222, and a thread rolling bearing 223. The thread rolling wheel body 221 may be a frustum-shaped structure with a circular opening in its center, allowing it to rotatably mount on the thread rolling wheel shaft through the circular opening. The thread rolling bushing 222 may be a copper bushing, made of copper alloys such as beryllium copper, which possesses advantages such as high strength, elasticity, hardness, wear resistance, fatigue resistance, and heat resistance. The thread rolling bushing 222 may be installed within the circular opening of the thread rolling wheel body 221, and an interference fit (H7 / N6) may be used between them. A clearance fit may be available between the thread rolling bushing 222 and the thread rolling wheel shaft, with an axial clearance ranging from 0.1 to 0.5 mm, for example, 0.1 mm, 0.25 mm, or 0.5 mm. The thread rolling bearing 223 may also be installed within the circular opening of the thread rolling wheel body 221. The rolling bearing 123 can be a turnbuckle bearing, which has advantages such as quiet operation, high speed, and durability. The outer ring of the rolling bearing 123 can be interference-fitted with the rolling wheel body 121, and the inner ring of the rolling bearing 123 can also be interference-fitted with the thread rolling wheel shaft. The thread rolling sleeve 222 can be located at one end of the lower bottom surface of the thread rolling wheel body 221, and the thread rolling bearing 223 can be located at one end of the upper bottom surface of the thread rolling wheel body 221. However, it is not limited to this; the thread rolling sleeve 222 can be located at one end of the upper bottom surface of the thread rolling wheel body 221, and the thread rolling bearing 223 can be located at one end of the lower bottom surface of the thread rolling wheel body 221. The thread rolling sleeve 222 can be a sleeve, and the thread rolling bearing 223 can be a component that fixes and reduces the coefficient of friction of the load during mechanical transmission. The similarity between the thread rolling sleeve 222 and the thread rolling bearing 223 is that both bear the load of the thread rolling wheel shaft. The difference between the thread rolling bushing 222 and the thread rolling bearing 223 is that the thread rolling bushing 222 is an integral structure, and there is relative movement between the thread rolling wheel shaft and the thread rolling bushing 222 when it rotates, while the thread rolling bearing 223 is a split structure, and there is relative movement between the inner and outer rings of the thread rolling bearing 223 when it rotates.

[0047] Please see Figure 6 and Figure 7As shown, in one embodiment of the present invention, when the thread rolling sleeve 222 acts between the thread rolling wheel body 221 and the thread rolling wheel shaft, the thread rolling sleeve 222 can play a fixing, positioning, and sliding bearing role, etc., and can be used to fix the center positioning of the thread rolling wheel shaft and prevent the thread rolling bearing 223 from shifting due to vibration during operation. To save materials, the wall thickness of the thread rolling sleeve 222 can be designed according to the axial load required by the thread rolling bearing 223. The thread rolling sleeve 222 can be made of cast copper and bearing alloy materials. The thread rolling sleeve 222 can be divided into open structure and closed structure. When the thread rolling sleeve 222 cannot bear the axial load, or can only bear a small axial load, or when a thrust bearing is added, the thread rolling sleeve 222 can be a cylindrical structure. The thread rolling sleeve 222 can be used to replace rolling bearings in some applications with low speed, high radial load and high clearance requirements. The material of the thread rolling sleeve 222 is required to be low in hardness and wear-resistant. The inner hole of the thread rolling sleeve 222 is ground and scraped to achieve high fitting accuracy. The inner wall of the thread rolling bushing 222 can be provided with oil grooves for lubrication. For example, when installing the thread rolling bushing 222, the inner wall of the thread rolling bushing 222 can be scraped, which leaves multiple lubrication grooves on the inner surface of the thread rolling bushing 222 to enhance the lubrication function. The shape of the lubrication grooves is not limited, and can be, for example, figure-eight shaped, rectangular, or circular.

[0048] Please see Figure 8 and Figure 9 As shown, in one embodiment of the present invention, during the process of forming an outer tapered forming portion at one end of the tube 30, the force borne by the roller body 121 gradually increases, and the force is greatest on one side of the lower bottom surface of the roller body 121. Therefore, it is necessary to place a roller bushing 122 capable of withstanding higher pressure on one side of the lower bottom surface of the roller body 121, and place a roller bearing 123 on one side of the upper bottom surface of the roller body 121. At this time, most of the force borne by the roller body 121 can be transferred to the roller bushing 122. During the thread rolling process of the tapered portion of the pipe 30, when the thread rolling wheel body 221 contacts the pipe 30, the pipe 30 will mesh with the thread rolling wheel thread on the thread rolling wheel body 221. At this time, the upper bottom surface of the thread rolling wheel body 221 is subjected to the greatest force. Therefore, it is necessary to place the thread rolling bushing 222, which can withstand higher pressure, on one side of the upper bottom surface of the thread rolling wheel body 221, and place the thread rolling bearing 223 on one side of the lower bottom surface of the thread rolling wheel body 221. At this time, most of the force borne by the thread rolling wheel body 221 can be transferred to the thread rolling bushing 222.

[0049] Please see Figure 8 and Figure 9As shown, in one embodiment of the present invention, during the tapered forming process, the tube 30 initially contacts the rolling roller 12. As the rolling time increases, the tube 30 is gradually fed axially, and the contact area between the tube 30 and the rolling roller 12 gradually increases until they are completely fitted, completing the tapered forming. During the thread rolling forming process, the tube 30 initially contacts the thread rolling roller 22. As the thread rolling time increases, the tube 30 is gradually fed axially, and the contact area between the tube 30 and the thread rolling roller 22 gradually increases until they are completely fitted, completing the thread rolling forming. "Rolling in a mixed axial and radial direction" or "mixed axial and radial rolling" can be used for this process. "Rolling in a mixed axial and radial direction" or "mixed axial and radial rolling" refers to the simultaneous axial and radial movement of the rolling roller 12 and / or the thread rolling roller 22 relative to the pipe 30 during the tapering and thread rolling processes. This relative movement is caused by the axial component force generated when the rolling roller 12 and / or the thread rolling roller 22 rotates in engagement with the pipe 30. This force is generated by the helix angle between the rolling roller 12 and / or the thread rolling roller 22 and the pipe 30, or by the angle of deviation between the axis of the rolling roller 12 and / or the thread rolling roller 22 and the axis of the pipe 30 in the vertical direction. Simultaneously, the rolling roller 12 and / or the thread rolling roller 22 feeds radially according to certain process requirements to complete the tapering and / or thread rolling process. When the relative speed in the radial direction is zero, it is called "rolling in the axial direction" or "axial rolling." Therefore, axial rolling is a special case of mixed axial and radial rolling.

[0050] In summary, the pipe threading assembly provided by this invention allows the rolling bushing and thread rolling bushing to bear most of the pressure during pipe processing, while the rolling bearing and thread rolling bearing reduce wear and prevent damage to the rolling roller and thread rolling wheel caused by seizing. This protects the structure of the rolling roller and thread rolling wheel and extends their service life.

[0051] Please see Figure 10 As shown, the present invention also provides a method for assembling a processing component, which can assemble the processing component. The assembly method may include the following steps:

[0052] Step S10: Install the rolling bearing 123 at one end of the upper bottom surface of the rolling wheel body 121, and the outer ring of the rolling bearing 123 and the rolling wheel body 121 are interference fit.

[0053] Step S20: Scrape the inner wall of the roller sleeve 122 to generate multiple lubrication grooves;

[0054] Step S30: The rolling bushing 122 is installed on one end of the bottom surface of the rolling roller body 121 by stamping. The rolling bushing 122 and the rolling roller body 121 adopt an interference fit of H7 / N6.

[0055] Step S40: Apply lubricating oil to the inner wall of the rolling bushing 122 and the rolling bearing 123;

[0056] Step S50: Install the rolling bushing 122 and the rolling bearing 123 on the rolling wheel shaft of the rolling wheel seat 11 so that the rolling wheel body 121 can rotate on the rolling wheel shaft, and there is a clearance fit between the rolling bushing 122 and the rolling wheel shaft;

[0057] Step S60: Install the thread rolling bearing 223 at one end of the bottom surface of the thread rolling wheel body 221, and the outer ring of the thread rolling bearing 223 and the thread rolling wheel body 221 are interference fit.

[0058] Step S70: Scrape the inner wall of the thread rolling bushing 222 to generate multiple lubrication grooves;

[0059] Step S80: Install the thread rolling bushing 222 on one end of the upper bottom surface of the thread rolling wheel body 221 by stamping. The thread rolling bushing 222 and the thread rolling wheel body 221 adopt an interference fit of H7 / N6.

[0060] Step S90: Apply lubricating oil to the inner wall of the thread rolling bushing 222 and the thread rolling bearing 223;

[0061] Step S100: Install the thread rolling bushing 222 and the thread rolling bearing 223 on the thread rolling wheel shaft of the thread rolling wheel seat 21 so that the thread rolling wheel body 221 can rotate on the thread rolling wheel shaft, and there is a clearance fit between the thread rolling bushing 222 and the thread rolling wheel shaft.

[0062] In summary, the assembly method of the processing components provided by this invention allows the rolling bushing and thread rolling bushing to bear most of the pressure during pipe processing, while the rolling bearing and thread rolling bearing reduce wear, thereby protecting the structure of the rolling roller and thread rolling roller and extending their service life.

[0063] In the description of this specification, the references to terms such as "this embodiment," "example," and "specific example" indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0064] The embodiments of the present invention disclosed above are merely illustrative of the invention. The embodiments do not exhaustively describe all details, nor do they limit the invention to the specific implementations described. Clearly, many modifications and variations can be made based on the content of this specification. This specification selects and specifically describes these embodiments to better explain the principles and practical applications of the invention, thereby enabling those skilled in the art to better understand and utilize the invention. The invention is limited only by the claims and their full scope and equivalents.

Claims

1. A pipe thread processing assembly, characterized in that, include: Multiple rolling rollers, each rolling roller comprising a rolling roller body, a rolling roller sleeve, and a rolling roller bearing; the rolling roller body has an approximately frustum-shaped structure; the rolling roller sleeve is installed inside one end of the lower bottom surface of the rolling roller body; and the rolling roller bearing is installed inside one end of the upper bottom surface of the rolling roller body. Multiple thread rolling wheels, each thread rolling wheel including a thread rolling wheel body, a thread rolling bushing, and a thread rolling bearing. The thread rolling wheel body has an approximately frustum-shaped structure. The thread rolling bushing is installed inside one end of the upper bottom surface of the thread rolling wheel body, and the thread rolling bearing is installed inside one end of the lower bottom surface of the thread rolling wheel body. Roller seat; Multiple rolling roller shafts are provided on the rolling roller seat, and the rolling rollers are rotatably mounted on the rolling roller shafts; Thread rolling wheel seat; Multiple thread rolling wheel shafts are provided on the thread rolling wheel seat, and the thread rolling wheel is rotatably mounted on the thread rolling wheel shaft.

2. The pipe thread processing assembly according to claim 1, characterized in that, The inner wall surface of the rolling bushing is provided with multiple lubrication grooves, and the inner wall surface of the thread rolling bushing is provided with multiple lubrication grooves.

3. The pipe thread processing assembly according to claim 1, characterized in that, The rolling roller body and the rolling bushing are interference-fitted, the rolling bushing and the rolling roller shaft are clearance-fitted, the rolling roller body and the outer ring of the rolling bearing are interference-fitted, and the inner ring of the rolling bearing and the rolling roller shaft are interference-fitted.

4. The pipe threading assembly according to claim 3, characterized in that, The axial installation clearance between the rolling bushing and the rolling wheel shaft is in the range of 0.1 to 0.5 mm.

5. The pipe thread processing assembly according to claim 1, characterized in that, The thread rolling wheel body and the thread rolling bushing are interference-fitted, the thread rolling bushing and the thread rolling wheel shaft are clearance-fitted, the thread rolling wheel body and the thread rolling bearing are interference-fitted, and the inner ring of the thread rolling bearing and the thread rolling wheel shaft are interference-fitted.

6. The pipe threading assembly according to claim 5, characterized in that, The axial installation clearance between the thread rolling bushing and the thread rolling wheel shaft is in the range of 0.1 to 0.5 mm.

7. The pipe thread processing assembly according to claim 1, characterized in that, The rolling bushing is a beryllium copper bushing, the rolling bearing is a turnbuckle bearing, the thread rolling bushing is a beryllium copper bushing, and the thread rolling bearing is a turnbuckle bearing.

8. A method for assembling a processing component, applied in the pipe thread processing component as described in claim 1, characterized in that, Including the following steps: The rolling bearing is installed at one end of the upper bottom surface of the rolling wheel body; The rolling bushing is installed at one end of the lower bottom surface of the rolling wheel body; The thread rolling bearing is mounted on one end of the lower bottom surface of the thread rolling wheel body; and The thread rolling bushing is installed at one end of the upper bottom surface of the thread rolling wheel body.

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