Cylinder liner inner side milling device

Abstract

The present invention relates to the technical field of cylinder liner milling, specifically to a cylinder liner inner side milling device, including a vertical milling machine, a lifting mechanism, a milling part, a milling motor and a loading seat, the lifting mechanism is fixedly arranged at the front upper part of the vertical milling machine, the lifting mechanism is used for up and down adjustment, the milling part is fixedly arranged at the front of the lifting mechanism, the milling part is used for milling the inner side of the cylinder liner, the milling part includes a processing part, an adjustment part, a tensioning part and a driving part, the loading seat is fixedly installed at the front of the movable end of the lifting mechanism, and the milling motor is fixedly installed on the top of the loading seat. The milling part is integrated with the processing part and the adjustment part, and the processing part can be adjusted according to the size of the cylinder diameter during use, and has a wide range of use and strong flexibility, and can be applicable to the milling of the inner side of cylinder liners with different cylinder diameters.

Description

Technical Field

[0001] The present invention relates to the technical field of cylinder liner milling, and specifically relates to a cylinder liner inner side milling device. Background Technique

[0002] The cylinder liner is a cylindrical part placed in the cylinder block hole of the engine block, fixed by the cylinder head, and the piston reciprocates in its inner hole. After the cylinder liner blank is processed, in order to meet the accuracy requirements, it usually needs to be subjected to high-precision processing such as milling and grinding and polishing to ensure that the finished cylinder liner can perfectly cooperate with the piston;

[0003] According to a Chinese patent with the application publication number CN114472991A, a cylinder inner wall milling device is disclosed, which uses a high-speed rotating milling cutter to remove the welding material on the inner wall of the cylinder. The longitudinal walking mechanism is equipped with a travel switch to control the limit positions of the feed and retraction of the milling cutter. The operation box can set the feed rate of the milling cutter, and a camera is installed at the front section of the tool rod to observe the action state of the milling cutter, so as to effectively process the inner hole of the cylinder. When the above-mentioned prior art is used for the inner side milling of the cylinder liner, a single milling cutter cannot perform milling on multiple parts of the inner wall of the cylinder at the same time, which results in far from enough milling efficiency. When processing a large number of cylinder liner milling operations, the existing processing method is particularly laborious. We propose a cylinder liner inner side milling device to solve the above technical problems. Summary of the Invention

[0004] The present invention provides the following technical solution: A cylinder liner inner side milling device, comprising:

[0005] Vertical milling machine;

[0006] Lifting mechanism, fixedly arranged on the upper part of the front end of the vertical milling machine, and the lifting mechanism is used for up and down adjustment;

[0007] Milling part, fixedly arranged on the front of the lifting mechanism, and the milling part is used for inner side milling of the cylinder liner, and the milling part includes a processing part, an adjusting part, a tensioning part and a driving part.

[0008] As a preferred solution of the present invention, the processing part includes:

[0009] Central power shaft;

[0010] Metal outer shell, connected to the periphery of the central power shaft through a bearing;

[0011] Rotary electric cylinder, fixedly installed at the bottom of the central power shaft;

[0012] Metal inner shell, fixedly installed at the bottom of the rotary electric cylinder;

[0013] The clamping plate is fixedly installed at the lower part of the inner wall of the metal inner shell. The number of the clamping plates is two, and the two clamping plates are distributed up and down. The outer wall of the upper clamping plate is fixedly connected to the lower part of the inner wall of the metal inner shell. A plurality of first shaft holes are formed at equal angles on the top of the clamping plate.

[0014] As a preferred solution of the present invention, the processing part further includes:

[0015] The adjusting shaft pin is rotatably installed inside the upper and lower first shaft holes;

[0016] The adjusting arm is fixedly installed on the outer wall of the adjusting shaft pin;

[0017] The milling shaft rod is rotatably installed at one end of the adjusting arm away from the adjusting shaft pin;

[0018] The driven synchronous wheel is fixedly installed in the middle of the outer wall of the milling shaft rod;

[0019] The cutter disk is fixedly installed at the bottom of the milling shaft rod;

[0020] The milling cutter is fixedly installed on the outer surface of the cutter disk. The number of the milling cutters is multiple, and the multiple milling cutters are distributed at equal angles.

[0021] As a preferred solution of the present invention, the adjusting part includes:

[0022] The adjusting driven gear is fixedly installed on the upper part of the outer wall of the adjusting shaft pin;

[0023] The central adjusting shaft is fixedly installed at the bottom of the output shaft of the rotating electric cylinder through a coupling;

[0024] The adjusting driving gear is fixedly installed at the bottom of the central adjusting shaft. The bottom of the central adjusting shaft has a clearance fit with the top of the upper clamping plate. The adjusting driving gear meshes with the adjusting driven gear.

[0025] As a preferred solution of the present invention, the driving part includes:

[0026] The sun gear is fixedly installed at the lower part of the outer wall of the metal outer shell;

[0027] The second shaft hole is formed through the top of the clamping plate, and the number of the second shaft holes is multiple. The multiple second shaft holes are distributed at equal angles;

[0028] The power dividing shaft is fixedly installed between the upper and lower second shaft holes;

[0029] The milling driven gear is fixedly installed on the upper part of the outer wall of the power dividing shaft. The milling driven gear meshes with the sun gear;

[0030] The driving synchronous wheel is rotatably installed in the middle of the outer wall of the power dividing shaft.

[0031] As a preferred solution of the present invention, the tensioning part includes:

[0032] Guide grooves are opened on the opposite surfaces of the upper and lower clamping plates. The number of the guide grooves is multiple and corresponds to the number of the first shaft holes. The multiple guide grooves are equally angularly distributed;

[0033] Guide blocks are slidably installed inside the guide grooves;

[0034] A tensioning shaft is fixedly installed between the upper and lower guide blocks. The tensioning shaft penetrates through the upper guide block and extends to the periphery of its top;

[0035] A tensioning wheel is rotatably installed on the outer wall of the tensioning shaft. The tensioning wheel is located between the upper and lower guide blocks;

[0036] A synchronous belt is sequentially wound around the peripheries of multiple driven synchronous wheels, the tensioning wheel and the driving synchronous wheel. The synchronous belt is provided with teeth on both sides.

[0037] As a preferred solution of the present invention, the tensioning part further includes:

[0038] Path grooves are penetrated and opened on the top of the upper clamping plate. The number and positions of the path grooves correspond to the tensioning shafts one by one. The tensioning shafts penetrate through the inside of the path grooves and extend to the peripheries of their tops;

[0039] Push and dial inclined grooves are opened on the top of the adjusting driving gear. The number of the push and dial inclined grooves is multiple. The specifications and positions of the multiple push and dial inclined grooves correspond to the tensioning shafts one by one. The inner walls of the push and dial inclined grooves are slidably connected with the outer walls of the tensioning shafts.

[0040] As a preferred solution of the present invention, it further includes:

[0041] A loading seat is fixedly installed on the front of the movable end of the lifting mechanism. The metal shell is fixedly installed at the bottom of the loading seat.

[0042] As a preferred solution of the present invention, it further includes:

[0043] A milling motor is fixedly installed on the top of the loading seat. The bottom end of the output shaft of the milling motor is fixedly connected with the top of the central power shaft through a coupling.

[0044] As a preferred solution of the present invention, a tool groove is opened on the lower part of the outer wall of the tool disc. The milling cutter is clamped inside the tool groove. The milling cutter is fixedly connected with the tool groove through bolts.

[0045] Compared with the prior art, the beneficial effects of the present invention are:

[0046] 1. In the present invention, the milling part is integrally provided with a processing part and an adjusting part. During use, the processing part can be adjusted according to the size of the cylinder diameter, with a wide range of applications and strong flexibility, and can be applied to the inner milling of cylinder liners with different cylinder diameters.

[0047] 2. In the present invention, the output shaft of the milling motor drives the central power shaft to rotate. The rotation of the central power shaft drives the metal inner shell and the clamping plate to rotate through the connection of the rotary electric cylinder. The rotation of the clamping plate drives the adjusting arm, the milling shaft rod, the tool disc and the milling cutter to rotate around the axis of the central power shaft through the connection of multiple adjusting pins. At the same time, during the rotation of the clamping plate around the axis of the central power shaft, the sub-driving shaft is also driven to rotate, so that the milling driven gear rotates in a planetary motion along the periphery of the sun gear, and under the meshing action of the two, the milling driven gear generates self-rotation, thereby driving the sub-driving shaft to rotate. The self-rotation of the sub-driving shaft drives the driving synchronous wheel to rotate together, and further drives multiple tool discs to rotate through the connection of the synchronous belt, so that the tool discs are driven to rotate through the connection of the milling shaft rod. During the rotation of the multiple milling cutters around the axis of the central power shaft, they also rotate around the axis of the milling shaft rod, improving the milling strength of the cylinder liner and accelerating the milling efficiency of the cylinder liner.

[0048] 3. In the present invention, when the adjusting part enlarges the milling range of the processing part, after the tensioning wheel of the tensioning part moves synchronously away from the center of the clamping plate, it still has a tensioning effect on the synchronous belt, avoiding the slack of the synchronous belt and ensuring the transmission effect of the synchronous belt. When the adjusting part reduces the milling range of the processing part, the tensioning wheel moves synchronously towards the center of the clamping plate, continuously tightening the synchronous belt, so that during the inward rotation of the adjusting arm, the synchronous belt will not slack, thus ensuring the transmission effect of the synchronous belt. BRIEF DESCRIPTION OF THE DRAWINGS

[0049] Figure 1 is a schematic structural diagram of the present invention;

[0050] Figure 2 is a schematic structural diagram of the milling part in the present invention;

[0051] Figure 3 is a schematic side sectional view of the metal outer shell and the metal inner shell in the present invention;

[0052] Figure 4 is a schematic structural diagram of the adjusting driving gear in the present invention;

[0053] Figure 5 is an unfolded schematic structural diagram of the clamping plate in the present invention;

[0054] Figure 6 is a schematic detailed structural diagram of the clamping plate in the present invention;

[0055] Figure 7Schematic diagram of the winding layout structure of the synchronous belt in the present invention;

[0056] Figure 8 Schematic diagram of the structure of the guide block and the tensioning shaft in the present invention;

[0057] Figure 9 Schematic diagram of the structure of the adjusting arm and the cutter disc in the present invention.

[0058] In the figure: 100, vertical milling machine; 200, lifting mechanism; 300, milling part; 301, central power shaft; 302, metal outer shell; 303, rotary electric cylinder; 304, metal inner shell; 305, clamping plate; 306, first shaft hole; 307, adjusting shaft pin; 308, adjusting arm; 309, milling shaft rod; 3010, driven synchronous pulley; 3011, cutter disc; 30011, cutter groove; 3012, milling cutter; 3013, adjusting driven gear; 3014, central adjusting shaft; 3015, adjusting driving gear; 3016, sun gear; 3017, second shaft hole; 3018, power dividing shaft; 3019, milling driven gear; 3020, guide groove; 3021, guide block; 3022, tensioning shaft; 3023, tensioning pulley; 3024, driving synchronous pulley; 3025, synchronous belt; 3026, path groove; 3027, push and dial inclined groove; 400, milling motor; 500, loading seat. Detailed implementation manners

[0059] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0060] Please refer to Figures 1 to 9 , the technical solutions provided by the present invention specifically include the following embodiments:

[0061] A cylinder liner inner side milling device includes a vertical milling machine 100, a lifting mechanism 200, a milling part 300, a milling motor 400 and a loading seat 500. The lifting mechanism 200 is fixedly arranged on the upper front end of the vertical milling machine 100. The lifting mechanism 200 is used for vertical adjustment. The milling part 300 is fixedly arranged on the front of the lifting mechanism 200. The milling part 300 is used for milling the inner side of the cylinder liner. The milling part 300 includes a processing part, an adjusting part, a tensioning part and a driving part. The loading seat 500 is fixedly installed on the front of the movable end of the lifting mechanism 200. The milling motor 400 is fixedly installed on the top of the loading seat 500.

[0062] Further, specifically refer to Figures 3 to 7 and Figure 9As shown in the figure:

[0063] The processing part includes a central power shaft 301, a metal outer shell 302, a rotary electric cylinder 303, a metal inner shell 304, clamping plates 305, a first shaft hole 306, an adjusting shaft pin 307, an adjusting arm 308, a milling shaft rod 309, a driven synchronous pulley 3010, a tool disk 3011 and a milling cutter 3012. The bottom end of the output shaft of the milling motor 400 is fixedly connected to the top of the central power shaft 301 through a coupling. The metal outer shell 302 is connected to the periphery of the central power shaft 301 through a bearing. The metal outer shell 302 is fixedly installed at the bottom of the loading seat 500. The rotary electric cylinder 303 is fixedly installed at the bottom of the central power shaft 301. The metal inner shell 304 is fixedly installed at the bottom of the rotary electric cylinder 303. The clamping plates 305 are fixedly installed at the lower part of the inner wall of the metal inner shell 304. The number of the clamping plates 305 is two. The two clamping plates 305 are distributed up and down. The outer wall of the upper clamping plate 305 is fixedly connected to the lower part of the inner wall of the metal inner shell 304. A plurality of equally angularly distributed first shaft holes 306 are formed at the top of the clamping plate 305. The adjusting shaft pin 307 is rotatably installed inside the upper and lower first shaft holes 306. The adjusting arm 308 is fixedly installed on the outer wall of the adjusting shaft pin 307. The milling shaft rod 309 is rotatably installed at the end of the adjusting arm 308 far from the adjusting shaft pin 307. The driven synchronous pulley 3010 is fixedly installed at the middle part of the outer wall of the milling shaft rod 309. The tool disk 3011 is fixedly installed at the bottom of the milling shaft rod 309. The milling cutter 3012 is fixedly installed on the outer surface of the tool disk 3011. The number of the milling cutters 3012 is multiple, and the multiple milling cutters 3012 are equally angularly distributed;

[0064] The adjusting part further includes an adjusting driven gear 3013, a central adjusting shaft 3014 and an adjusting driving gear 3015. The adjusting driven gear 3013 is fixedly installed at the upper part of the outer wall of the adjusting shaft pin 307. The central adjusting shaft 3014 is fixedly installed at the bottom of the output shaft of the rotary electric cylinder 303 through a coupling. The adjusting driving gear 3015 is fixedly installed at the bottom of the central adjusting shaft 3014. The bottom of the central adjusting shaft 3014 and the top of the upper clamping plate 305 are in clearance fit. The adjusting driving gear 3015 is meshed with the adjusting driven gear 3013.

[0065] Specifically, the milling range of multiple tool disks 3011 is adjusted by the adjusting part, so as to be applicable to the milling of the inner side of cylinder liners with different cylinder bores. Specifically, an angle command is sent to the rotary electric cylinder 303 through the CNC control panel of this device. The output shaft of the rotary electric cylinder 303 rotates by the parameter angle set by the command. Moreover, the rotation of the output shaft of the rotary electric cylinder 303 also drives the adjusting driving gear 3015 to rotate together through the central adjusting shaft 3014. The rotation of the adjusting driving gear 3015 drives multiple adjusting driven gears 3013 meshing with it to rotate synchronously. The rotation of multiple rotary electric cylinders 303 drives multiple adjusting arms 308 to rotate along the connection with the first shaft hole 306 through the connection of multiple adjusting pins 307, thereby driving multiple tool disks 3011 and milling cutters 3012 to adjust outward or inward together, and adjusting the milling range of the milling cutter 3012. After adjustment, the locking mechanism inside the rotary electric cylinder 303 locks the output shaft of the rotary electric cylinder 303 (the rotary electric cylinder 303 is an existing product with an electromagnetic locking mechanism inside, and the specific model is not limited, as long as it meets the usage requirements of this device), so as to prevent the output shaft of the rotary electric cylinder 303 from rotating again, and further ensure that the milling range of the tool disk 3011 after adjustment will not be changed again, so as to ensure the milling accuracy.

[0066] Further, specifically refer to Figure 3 、 Figure 7 and Figure 9 as shown:

[0067] The driving part includes a sun gear 3016, a second shaft hole 3017, a power dividing shaft 3018, a milling driven gear 3019 and a driving synchronous pulley 3024. The sun gear 3016 is fixedly installed at the lower part of the outer wall of the metal shell 302. The second shaft hole 3017 is penetrated and opened at the top of the clamping plate 305, and the number of the second shaft holes 3017 is multiple. The multiple second shaft holes 3017 are equiangularly distributed. The power dividing shaft 3018 is rotatably installed between the upper and lower second shaft holes 3017. The milling driven gear 3019 is fixedly installed at the upper part of the outer wall of the power dividing shaft 3018. The milling driven gear 3019 meshes with the sun gear 3016. The driving synchronous pulley 3024 is rotatably installed in the middle of the outer wall of the power dividing shaft 3018. A synchronous belt 3025 is wound around the peripheries of multiple driving synchronous pulleys 3024 and driven synchronous pulleys 3010.

[0068] Specifically, the output shaft of the milling motor 400 drives the central power shaft 301 to rotate. The rotation of the central power shaft 301 drives the metal inner shell 304 and the clamping plate 305 to rotate through the connection of the rotary electric cylinder 303. The rotation of the clamping plate 305 drives the adjusting arm 308, the milling shaft rod 309, the cutter disc 3011, and the milling cutter 3012 to rotate around the axis of the central power shaft 301 through the connection of multiple adjusting axles 307. At the same time, during the rotation of the clamping plate 305 around the axis of the central power shaft 301, it also drives the power dividing shaft 3018 to rotate together, causing the milling driven gear 3019 to perform planetary rotation along the periphery of the sun gear 3016. Under the meshing action of the two, the milling driven gear 3019 generates self-rotation, thereby driving the power dividing shaft 3018 to rotate self. The self-rotation of the power dividing shaft 3018 drives the driving synchronous wheel 3024 to rotate self. Further, under the connection of the synchronous belt 3025, it drives multiple cutter discs 3011 to rotate self. Thus, under the connection of the milling shaft rod 309, it drives the cutter disc 3011 to rotate self, enabling the multiple milling cutters 3012 to rotate around the axis of the milling shaft rod 309 during the rotation around the axis of the central power shaft 301, improving the milling strength of the cylinder liner and accelerating the milling efficiency of the cylinder liner.

[0069] Further, specifically referring to Figures 4 to 8 as shown in

[0070] The tensioning part includes a guide groove 3020, a guide block 3021, a tensioning shaft 3022, a tensioning wheel 3023, a driving synchronous wheel 3024, a synchronous belt 3025, a path groove 3026, and a push-and-pull inclined groove 3027. The guide groove 3020 is opened on the opposite surfaces of the upper and lower clamping plates 305. The number of the guide grooves 3020 is multiple and corresponds to the number of the first shaft holes 306. The multiple guide grooves 3020 are equally angularly distributed. The guide block 3021 is slidably installed inside the guide groove 3020. The tensioning shaft 3022 is fixedly installed between the upper and lower guide blocks 3021. The tensioning shaft 3022 penetrates through the upper guide block 3021 and extends to the periphery of its top. The tensioning wheel 3023 is rotatably installed on the outer wall of the tensioning shaft 3022. The tensioning wheel 3023 is located between the upper and lower guide blocks 3021. The synchronous belt 3025 is sequentially wound around the peripheries of multiple driven synchronous wheels 3010, the tensioning wheel 3023, and the driving synchronous wheel 3024. The synchronous belt 3025 is provided with teeth on both sides. The path groove 3026 is penetrated and opened on the top of the upper clamping plate 305. The number and position of the path grooves 3026 correspond to the tensioning shaft 3022 one by one. The tensioning shaft 3022 penetrates through the inside of the path groove 3026 and extends to the periphery of its top. The push-and-pull inclined groove 3027 is opened on the top of the adjusting driving gear 3015. The number of the push-and-pull inclined grooves 3027 is multiple. The specifications and positions of the multiple push-and-pull inclined grooves 3027 correspond to the tensioning shaft 3022 one by one. The inner wall of the push-and-pull inclined groove 3027 is slidably connected to the outer wall of the tensioning shaft 3022.

[0071] Specifically, the output shaft of the rotary electric cylinder 303 drives the adjustment drive gear 3015 to rotate and also drives a plurality of push-slanting grooves 3027 to rotate together, generating a thrust on the outer walls of the plurality of tension shafts 3022, causing the tension shafts 3022 to push the guide blocks 3021 to slide along the inner wall of the guide groove 3020, further driving the tension wheels 3023 to move together. When the adjustment arm 308 rotates outwards, the guide groove 3020 moves in a direction away from the center of the clamping plate 305, ensuring that the synchronous belt 3025 will not be pulled during the process of the adjustment arm 308 rotating outwards. At the same time, the moving distance of the tension wheel 3023 is adapted to the rotation angle of the adjustment arm 308. Therefore, after the tension wheel 3023 moves in a direction away from the center of the clamping plate 305, it still has a tensioning effect on the synchronous belt 3025, preventing the synchronous belt 3025 from loosening and ensuring the transmission effect of the synchronous belt 3025. When the adjustment arm 308 rotates inwards, the guide groove 3020 moves in a direction towards the center of the clamping plate 305. Thus, during the process of the adjustment arm 308 rotating inwards, by the tension wheel 3023 moving in a direction towards the center of the clamping plate 305, the synchronous belt 3025 is continuously tightened, so that the synchronous belt 3025 will not become loose during the process of the adjustment arm 308 rotating inwards, thereby ensuring the transmission effect of the synchronous belt 3025.

[0072] Further, specifically referring to Figure 9 as shown in

[0073] A tool groove 30011 is provided at the lower part of the outer wall of the tool disc 3011, and the milling cutter 3012 is clamped inside the tool groove 30011. The milling cutter 3012 is fixedly connected to the tool groove 30011 by bolts.

[0074] Specifically, by clamping the milling cutter 3012 inside the tool groove 30011, the contact limiting effect between the inner wall of the tool groove 30011 and the outer wall of the milling cutter 3012 can prevent the milling cutter 3012 from loosening, thereby ensuring the milling accuracy. At the same time, by using the limiting effect between the inner wall of the tool groove 30011 and the outer wall of the milling cutter 3012, the lateral force of the fixing bolts can also be reduced, avoiding the deformation of the bolts for fixing the milling cutter 3012.

[0075] When a cylinder liner inner side milling device of this solution is working, the cylinder liner is erected on the bottom processing table of the vertical milling machine 100 and is located directly below the milling part 300, and it is fixed by a fixing tooling. The fixing tooling is an existing product, and the specific model and fixing principle are not described in detail here;

[0076] First, the milling range of multiple tool disks 3011 is adjusted through the adjusting part so as to be applicable to the milling of the inner side surface of cylinder liners with different cylinder bores. Specifically, an angle command is sent to the rotary electric cylinder 303 through the CNC control panel of this device. The output shaft of the rotary electric cylinder 303 rotates by the parameter angle set by the command. Moreover, the rotation of the output shaft of the rotary electric cylinder 303 also drives the adjusting driving gear 3015 to rotate together through the central adjusting shaft 3014. The rotation of the adjusting driving gear 3015 drives a plurality of adjusting driven gears 3013 engaged therewith to rotate synchronously. The rotation of a plurality of rotary electric cylinders 303 drives a plurality of adjusting arms 308 to rotate along the connection with the first shaft hole 306 through the connection action of a plurality of adjusting pins 307, and further drives a plurality of tool disks 3011 and milling cutters 3012 to be adjusted outward or inward together, so as to adjust the milling range of the milling cutter 3012. After the adjustment, the locking mechanism inside the rotary electric cylinder 303 locks the output shaft of the rotary electric cylinder 303 (the rotary electric cylinder 303 is an existing product with an electromagnetic locking mechanism inside, and the specific model is not limited as long as it meets the usage requirements of this device), so as to prevent the output shaft of the rotary electric cylinder 303 from rotating again, and further ensure that the milling range of the tool disk 3011 after adjustment will not be changed again, so as to ensure the milling accuracy;

[0077] Meanwhile, the rotation of the adjusting driving gear 3015 also drives a plurality of push and dial chutes 3027 to rotate together, generating a thrust on the outer walls of a plurality of tension shafts 3022, so that the tension shafts 3022 push the guide blocks 3021 to slide along the inner wall of the guide groove 3020, and further drive the tension wheels 3023 to move together. When the adjusting arm 308 rotates outward, the guide groove 3020 moves in a direction away from the center of the clamping plate 305, ensuring that the synchronous belt 3025 will not be pulled during the process of the adjusting arm 308 rotating outward. At the same time, the moving distance of the tension wheel 3023 is adapted to the rotation angle of the adjusting arm 308. Therefore, after the tension wheel 3023 moves in a direction away from the center of the clamping plate 305, it still has a tensioning effect on the synchronous belt 3025, avoiding the slack of the synchronous belt 3025 and ensuring the transmission effect of the synchronous belt 3025. When the adjusting arm 308 rotates inward, the guide groove 3020 moves in a direction close to the center of the clamping plate 305. Thus, during the process of the adjusting arm 308 rotating inward, the synchronous belt 3025 is continuously tightened by the tension wheel 3023 moving in a direction close to the center of the clamping plate 305, so that the synchronous belt 3025 will not be slack during the process of the adjusting arm 308 rotating inward, and further ensuring the transmission effect of the synchronous belt 3025;

[0078] During milling, the lifting mechanism 200 drives the loading seat 500 to move downward (the lifting mechanism 200 is an existing ball screw or a moving platform in the form of an electric telescopic cylinder, which can meet the high-precision up and down movement. The specific structure is not limited as long as it meets the usage requirements of this device). The milling part 300 is evenly released downward. The output shaft of the milling motor 400 drives the central power shaft 301 to rotate. The rotation of the central power shaft 301 drives the metal inner shell 304 and the clamping plate 305 to rotate through the connection of the rotary electric cylinder 303. The rotation of the clamping plate 305 drives the adjusting arm 308, the milling shaft rod 309, the cutter disc 3011 and the milling cutter 3012 to rotate around the axis of the central power shaft 301 through the connection of multiple adjusting pins 307. At the same time, during the rotation of the clamping plate 305 around the axis of the central power shaft 301, it also drives the sub-shaft 3018 to rotate together, so that the milling driven gear 3019 makes a planetary rotation along the periphery of the sun gear 3016. Under the meshing action of the two, the milling driven gear 3019 generates self-rotation, and then drives the sub-shaft 3018 to rotate. The self-rotation of the sub-shaft 3018 drives the driving synchronous pulley 3024 to rotate together. Further, under the connection of the synchronous belt 3025, it drives multiple cutter discs 3011 to rotate. Thus, under the connection of the milling shaft rod 309, it drives the cutter disc 3011 to rotate, so that during the rotation of the multiple milling cutters 3012 around the axis of the central power shaft 301, they also rotate around the axis of the milling shaft rod 309, improving the milling strength of the cylinder liner and accelerating the milling efficiency of the cylinder liner.

[0079] Although the embodiments of the present invention have been shown and described, for those of ordinary skill in the art, it can be understood that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principle and spirit of the present invention.

Claims

1. A cylinder liner inner side milling device, characterized in that: include: Vertical milling machine (100); A lifting mechanism (200) is fixedly arranged on the upper front end of the vertical milling machine (100), and the lifting mechanism (200) is used for upward and downward adjustment; A milling part (300) is fixedly arranged on the front side of the lifting mechanism (200), and the milling part (300) is used for milling the inner side of the cylinder sleeve. The milling part (300) comprises a processing part, an adjusting part, a tensioning part, and a driving part; The processing unit includes: Central power shaft (301); A metal housing (302) connected to the periphery of the central power shaft (301) via a bearing; A rotary electric cylinder (303) is fixedly mounted on the bottom of the central power shaft (301); A metal inner shell (304) is fixedly mounted on the bottom of the rotary electric cylinder (303); A clamping plate (305) is fixedly mounted on the lower part of the inner wall of the metal inner shell (304). There are two clamping plates (305), which are distributed up and down, and the outer wall of the upper clamping plate (305) is fixedly connected to the lower part of the inner wall of the metal inner shell (304). The top of the clamping plate (305) is provided with a plurality of first axial holes (306) distributed at equal angles. The processing unit also includes: An adjusting shaft pin (307) is rotatably mounted inside the upper and lower first shaft holes (306); An adjusting arm (308) is fixedly mounted on the outer wall of the adjusting shaft pin (307); A milling shaft (309) is rotatably mounted on an end of the adjusting arm (308) away from the adjusting shaft pin (307); A driven synchronous wheel (3010) is fixedly mounted on the middle part of the outer wall of the milling shaft (309); A tool disc (3011) is fixedly mounted on the bottom of the milling shaft (309); A milling cutter (3012) is fixedly mounted on the outer surface of the tool disc (3011), wherein there are a plurality of milling cutters (3012) and the plurality of milling cutters (3012) are distributed at equal angles; The adjustment unit comprises: The adjusting driven gear (3013) is fixedly mounted on the upper portion of the outer wall of the adjusting shaft pin (307); The central adjustment shaft (3014) is fixedly mounted on the bottom of the output shaft of the rotary electric cylinder (303) through a coupling; The adjusting driving gear (3015) is fixedly mounted on the bottom of the central adjusting shaft (3014), the bottom of the central adjusting shaft (3014) and the top of the upper clamping plate (305) are clearance-matched, and the adjusting driving gear (3015) is meshed with the adjusting driven gear (3013); The driving unit comprises: A sun gear (3016) is fixedly mounted on the lower portion of the outer wall of the metal housing (302); A second axial hole (3017) is formed through the top of the clamping plate (305), and there are a plurality of the second axial holes (3017), which are distributed at equal angles; The transfer shaft (3018) is fixedly mounted between the upper and lower second shaft holes (3017); A milling driven gear (3019) is fixedly mounted on the upper portion of the outer wall of the transfer shaft (3018), wherein the milling driven gear (3019) is meshed with the sun gear (3016); A driving synchronous wheel (3024) is rotatably mounted on the middle portion of the outer wall of the transfer shaft (3018); The tensioning portion comprises: The guide grooves (3020) are provided on the opposite surfaces of the upper and lower clamping plates (305). The number of the guide grooves (3020) is plural and corresponds to the number of the first shaft holes (306). The plurality of guide grooves (3020) are distributed at equal angles. A guide block (3021) is slidably mounted inside the guide groove (3020); A tensioning shaft (3022) is fixedly mounted between the upper and lower guide blocks (3021), wherein the tensioning shaft (3022) passes through the upper guide block (3021) and extends to the periphery of the top thereof; A tensioning wheel (3023) is rotatably mounted on the outer wall of the tensioning shaft (3022), and the tensioning wheel (3023) is located between the upper and lower guide blocks (3021); A synchronous belt (3025) is sequentially wound around the peripheries of a plurality of driven synchronous wheels (3010), a tension wheel (3023) and a driving synchronous wheel (3024), wherein the synchronous belt (3025) is provided with double-sided teeth; The tensioning portion further comprises: A path groove (3026) passes through the top of the clamping plate (305) provided on the upper layer. The number and position of the path grooves (3026) correspond to the tensioning shaft (3022) one by one. The tensioning shaft (3022) passes through the inside of the path groove (3026) and extends to the periphery of the top thereof. The push-pull bevel groove (3027) is provided at the top of the adjusting driving gear (3015), and the push-pull bevel groove (3027) is provided in a plurality of numbers, and the specifications and positions of the plurality of push-pull bevel grooves (3027) correspond one-to-one to the tensioning shaft (3022), and the inner wall of the push-pull bevel groove (3027) is slidably connected to the outer wall of the tensioning shaft (3022).

2. A cylinder liner inner side milling device according to claim 1, characterized in that: Also includes: The loading seat (500) is fixedly mounted on the front side of the movable end of the lifting mechanism (200), and the metal shell (302) is fixedly mounted on the bottom of the loading seat (500).

3. A cylinder liner inner side milling device according to claim 2, characterized in that: Also includes: The milling motor (400) is fixedly mounted on the top of the loading seat (500), and the bottom end of the output shaft of the milling motor (400) is fixedly connected to the top of the central power shaft (301) via a coupling.

4. A cylinder liner inner side milling device according to claim 3, characterized in that: A tool groove (30011) is provided at the lower part of the outer wall of the tool disc (3011), and the milling cutter (3012) is clamped inside the tool groove (30011). The milling cutter (3012) is fastened to the tool groove (30011) by bolts.

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