Milling device for inner side of cylinder sleeve

Abstract

The invention relates to the technical field of cylinder sleeve milling, in particular to a cylinder sleeve inner side milling device which comprises a vertical milling machine, a lifting mechanism, a milling part, a milling motor and a loading seat, the lifting mechanism is fixedly arranged on the upper portion of the front end of the vertical milling machine and used for vertical adjustment, and the milling part is fixedly arranged on the front face of the lifting mechanism and used for vertical adjustment. The milling part is used for milling the inner side of the cylinder sleeve and comprises a machining part, an adjusting part, a tensioning part and a driving part, the loading seat is fixedly installed on the front face 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 integrally provided with the machining part and the adjusting part, the machining part can be adjusted according to the size of the cylinder diameter during use, the application range is wide, the flexibility is high, and the milling device can be suitable for milling the inner sides of cylinder sleeves with different cylinder diameters.

Description

Technical Field

[0001] The invention relates to the technical field of cylinder liner milling, in particular to a cylinder liner inner side milling device. Background Art

[0002] The cylinder liner is a cylindrical part, which is placed in the cylinder hole of the engine body and fixed by the cylinder head. The piston reciprocates in its inner hole. After the cylinder liner blank is processed, in order to meet the accuracy requirements, it is usually milled and polished to ensure that the finished cylinder liner can perfectly match the piston. According to a Chinese patent application with the publication number CN114472991A, a cylinder inner wall milling device is disclosed, which utilizes a milling cutter to rotate at high speed to remove welding materials on the inner wall of the cylinder body. The longitudinal walking mechanism is provided with a travel switch to control the feed and retract limit positions of the milling cutter. The operating box can set the feed amount of the milling cutter. The front section of the tool rod is equipped with a camera to observe the movement state of the milling cutter, thereby achieving effective processing of the inner hole of the cylinder body. When the above-mentioned prior art is used for milling the inner side of the cylinder liner, a single milling cutter cannot mill multiple locations of the inner wall of the cylinder at the same time, which results in the milling efficiency being far from enough. When processing large quantities of cylinder liner milling, the existing processing method is particularly difficult. We propose a cylinder liner inner side milling device to solve the above-mentioned technical problems. Summary of the invention

[0003] The present invention provides the following technical solution: a cylinder liner inner side milling device, comprising: Vertical milling machine; A lifting mechanism is fixedly arranged on the upper front end of the vertical milling machine, and the lifting mechanism is used for up and down adjustment; The milling part is fixedly arranged on the front side of the lifting mechanism, and is used for milling the inner side of the cylinder sleeve. The milling part includes a processing part, an adjusting part, a tensioning part and a driving part.

[0004] As a preferred solution of the present invention, the processing unit includes: Central power shaft; A metal housing connected to the periphery of the central power shaft through bearings; The rotary electric cylinder is fixedly installed at the bottom of the central power shaft; Metal inner shell, fixedly installed at the bottom of the rotary cylinder; A clamping plate is fixedly installed on the lower part of the inner wall of the metal inner shell. There are two clamping plates, which are distributed up and down, and 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 axial holes distributed at equal angles are opened on the top of the clamping plate.

[0005] As a preferred solution of the present invention, the processing unit further includes: The adjusting shaft pin is rotatably mounted inside the upper and lower first shaft holes; An adjusting arm is fixedly mounted on the outer wall of the adjusting shaft pin; A milled shaft rod is rotatably mounted on the end of the adjusting arm away from the adjusting shaft pin; A driven synchronous wheel is fixedly mounted on the middle of the outer wall of the milling shaft; A tool disc, fixedly mounted on the bottom of the milling spindle; The milling cutter is fixedly mounted on the outer surface of the tool disc. There are multiple milling cutters, and the multiple milling cutters are distributed at equal angles.

[0006] As a preferred solution of the present invention, the adjustment unit includes: The adjusting driven gear is fixedly mounted on the upper part of the outer wall of the adjusting shaft pin; The center adjustment shaft is fixedly installed at the bottom of the output shaft of the rotary electric cylinder through a coupling; The adjusting driving gear is fixedly mounted on the bottom of the central adjusting shaft. The bottom of the central adjusting shaft and the top of the upper clamping plate are clearance-matched. The adjusting driving gear is meshed with the adjusting driven gear.

[0007] As a preferred solution of the present invention, the driving unit includes: The sun gear is fixedly mounted on the lower part of the outer wall of the metal housing; A second axial hole is formed through the top of the clamping plate, and the second axial holes are in a plurality and are distributed at equal angles; The transfer shaft is fixedly installed between the upper and lower second shaft holes; A milling driven gear is fixedly mounted on the upper portion of the outer wall of the transfer shaft, and the milling driven gear is meshed with the sun gear; The driving synchronous wheel is rotatably mounted on the middle part of the outer wall of the transfer shaft.

[0008] As a preferred solution of the present invention, the tensioning portion comprises: Guide grooves are provided 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 axial holes, and the multiple guide grooves are distributed at equal angles; A guide block, slidably mounted inside the guide groove; A tensioning shaft is fixedly installed between the upper and lower guide blocks, the tensioning shaft passes through the upper guide block and extends to the outer periphery of the top thereof; A tensioning wheel, rotatably mounted on the outer wall of the tensioning shaft, the tensioning wheel being located between the upper and lower guide blocks; The synchronous belt is sequentially wound around the peripheries of a plurality of driven synchronous wheels, a tensioning wheel and a driving synchronous wheel, and the synchronous belt is provided with double-sided belt teeth.

[0009] As a preferred solution of the present invention, the tensioning portion further includes: A path groove runs through the top of the clamping plate on the upper layer, the number and position of the path grooves correspond to the tensioning shafts one by one, and the tensioning shaft runs through the inside of the path groove and extends to the periphery of the top thereof; A push-pull bevel groove is provided at the top of the adjusting driving gear. There are multiple push-pull bevel grooves, and the specifications and positions of the multiple push-pull bevel grooves correspond one-to-one to the tensioning shaft. The inner wall of the push-pull bevel groove is slidably connected to the outer wall of the tensioning shaft.

[0010] As a preferred solution of the present invention, it also includes: The loading seat is fixedly mounted on the front side of the movable end of the lifting mechanism, and the metal shell is fixedly mounted on the bottom of the loading seat.

[0011] As a preferred solution of the present invention, it also includes: The milling motor is fixedly mounted on the top of the loading seat, and the bottom end of the output shaft of the milling motor is fixedly connected to the top of the central power shaft through a coupling.

[0012] As a preferred solution of the present invention, a tool groove is opened at the lower part of the outer wall of the tool disc, and the milling cutter is clamped in the inside of the tool groove. The milling cutter is fastened to the tool groove by bolts.

[0013] Compared with the prior art, the present invention has the following beneficial effects: 1. In the present invention, the milling part is integrated with the processing part and the adjusting part. When in use, the processing part can be adjusted according to the size of the cylinder diameter. The application range is wide and the flexibility is strong. It can be applied to the milling processing of the inner side of the cylinder sleeve with different cylinder diameters.

[0014] 2. In the present invention, the central power shaft is driven to rotate by the output shaft of the milling motor. The rotation of the central power shaft drives the metal inner shell and the clamping plate to rotate through the connection action of the rotating electric cylinder. The rotation of the clamping plate drives the adjusting arm, the milling shaft, the tool disc and the milling cutter to rotate around the axial direction of the central power shaft through the connection action of multiple adjusting shaft pins. At the same time, the clamping plate also drives the transfer shaft to rotate during the axial rotation around the central power shaft, so that the milling driven gear rotates along the periphery of the sun gear, and under the meshing action of the two, the milling driven gear rotates, which in turn drives the transfer shaft to rotate. The rotation of the transfer shaft drives the driving synchronous wheel to rotate together, and further drives the multiple tool discs to rotate under the connection action of the synchronous belt, thereby driving the tool discs to rotate under the connection action of the milling shaft, so that the multiple milling cutters rotate around the axial direction of the milling shaft while rotating around the axis of the central power shaft, thereby improving the cylinder liner milling strength and accelerating the cylinder liner milling efficiency.

[0015] 3. In the present invention, when the milling range of the processing part of the adjusting force is increased, after the tensioning wheel of the tensioning part is synchronously moved away from the center of the splint, it still has a tensioning effect on the synchronous belt to avoid loosening of the synchronous belt and ensure the transmission effect of the synchronous belt. When the milling range of the processing part of the adjusting force is decreased, the tensioning wheel is synchronously moved toward the center of the splint to continuously tighten the synchronous belt, so that the synchronous belt will not be loose during the inward rotation of the adjusting arm, thereby ensuring the transmission effect of the synchronous belt. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a structural schematic diagram of the present invention; Figure 2 It is a structural schematic diagram of the milling part in the present invention; Figure 3 It is a schematic diagram of the side cross-section structure of the metal outer shell and the metal inner shell in the present invention; Figure 4 It is a schematic diagram of the structure of adjusting the driving gear in the present invention; Figure 5 It is a schematic diagram of the unfolded structure of the splint in the present invention; Figure 6 It is a detailed structural diagram of the splint in the present invention; Figure 7 It is a schematic diagram of the winding layout structure of the synchronous belt in the present invention; Figure 8 It is a schematic diagram of the structure of the guide block and the tensioning shaft in the present invention; Fig. 9 It is a schematic diagram of the structure of the adjusting arm and the tool disc in the present invention.

[0017] In the figure: 100, vertical milling machine; 200, lifting mechanism; 300, milling part; 301, central power shaft; 302, metal 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 wheel; 3011, tool plate; 30011, tool slot; 3012, milling cutter; 3013, adjusting driven gear ; 3014, center adjustment shaft; 3015, adjustment driving gear; 3016, sun gear; 3017, second shaft hole; 3018, transfer shaft; 3019, milling driven gear; 3020, guide groove; 3021, guide block; 3022, tensioning shaft; 3023, tensioning wheel; 3024, driving synchronous wheel; 3025, synchronous belt; 3026, path groove; 3027, push-pull inclined groove; 400, milling motor; 500, loading seat. DETAILED DESCRIPTION

[0018] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0019] See also Figures 1 to 9 The technical solution provided by the present invention specifically includes the following embodiments: 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, and the lifting mechanism 200 is used for up and down adjustment. The milling part 300 is fixedly arranged on the front side 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 side of the movable end of the lifting mechanism 200, and the milling motor 400 is fixedly installed on the top of the loading seat 500.

[0020] For further details, please refer to Figure 3 to Figure 7 as well as Fig. 9 As shown: The processing part includes a central power shaft 301, a metal shell 302, a rotary electric cylinder 303, a metal inner shell 304, a clamping plate 305, a first shaft hole 306, an adjusting shaft pin 307, an adjusting arm 308, a milling shaft rod 309, a driven synchronous wheel 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 shell 302 is connected to the periphery of the central power shaft 301 through a bearing. The metal 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 plate 305 is fixedly installed at the lower part of the inner wall of the metal inner shell 304. The clamping plate 305 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. A plurality of first shaft holes 306 distributed at equal angles are opened on the top of the clamping plate 305. 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 rod 309 is rotatably mounted on one 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 rod 309. A tool disc 3011 is fixedly mounted on the bottom of the milling shaft rod 309. A milling cutter 3012 is fixedly mounted on the outer surface of the tool disc 3011. There are multiple milling cutters 3012, and the multiple milling cutters 3012 are distributed at equal angles. The adjustment part also includes an adjustment driven gear 3013, a central adjustment shaft 3014 and an adjustment driving gear 3015. The adjustment driven gear 3013 is fixedly installed on the upper outer wall of the adjustment shaft pin 307. The central adjustment shaft 3014 is fixedly installed on the bottom of the output shaft of the rotary electric cylinder 303 through a coupling. The adjustment driving gear 3015 is fixedly installed on the bottom of the central adjustment shaft 3014. The bottom of the central adjustment shaft 3014 and the top of the upper clamping plate 305 are clearance-matched. The adjustment driving gear 3015 is meshed with the adjustment driven gear 3013.

[0021] Specifically, the milling range of the plurality of tool discs 3011 is adjusted through the adjustment unit, so as to be suitable for the milling of the inner side of the cylinder sleeve with different cylinder diameters. Specifically, the CNC control panel of the device transmits an angle instruction to the rotary electric cylinder 303, and the output shaft of the rotary electric cylinder 303 rotates to the parameter angle set by the instruction. The rotation of the output shaft of the rotary electric cylinder 303 also drives the adjustment driving gear 3015 to rotate together through the central adjustment shaft 3014. The rotation of the adjustment driving gear 3015 drives the plurality of adjustment driven gears 3013 meshing therewith to rotate synchronously. The rotation of the plurality of rotary electric cylinders 303 is connected by the plurality of adjustment shaft pins 307. It drives multiple adjustment arms 308 to rotate along the connection with the first axial hole 306, thereby driving multiple tool discs 3011 and the milling cutter 3012 to adjust outward or inward together, and adjusting 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 use requirements of the device) to prevent the output shaft of the rotary electric cylinder 303 from rotating again, thereby ensuring that the milling range of the adjusted tool disc 3011 will not be changed again, so as to ensure the milling accuracy.

[0022] For further details, please refer to Figure 3 , Figure 7 and Fig. 9 As shown: The driving part includes a sun gear 3016, a second shaft hole 3017, a transfer shaft 3018, a milling driven gear 3019 and a driving synchronous wheel 3024. The sun gear 3016 is fixedly installed on the lower part of the outer wall of the metal shell 302. The second shaft hole 3017 is opened through the top of the clamping plate 305, and there are multiple second shaft holes 3017. The multiple second shaft holes 3017 are distributed at equal angles. The transfer shaft 3018 is rotatably installed between the upper and lower second shaft holes 3017. The milling driven gear 3019 is fixedly installed on the upper part of the outer wall of the transfer shaft 3018. The milling driven gear 3019 is meshed with the sun gear 3016. The driving synchronous wheel 3024 is rotatably installed in the middle part of the outer wall of the transfer shaft 3018. The periphery of the multiple driving synchronous wheels 3024 and the driven synchronous wheels 3010 are commonly wound with a synchronous belt 3025.

[0023] Specifically, the output shaft of the milling motor 400 drives the central power shaft 301 to rotate, and the rotation of the central power shaft 301 drives the metal inner shell 304 and the clamping plate 305 to rotate through the connection action of the rotating electric cylinder 303. The rotation of the clamping plate 305 drives the adjusting arm 308, the milling shaft 309, the tool disc 3011 and the milling cutter 3012 to rotate together around the axial direction of the central power shaft 301 through the connection action of multiple adjusting shaft pins 307. At the same time, during the axial rotation of the clamping plate 305 around the central power shaft 301, the transfer shaft 3018 is also driven to rotate together, so that the milling driven gear 3019 is rotated along the sun The periphery of the gear 3016 rotates in a planetary manner, and under the meshing action of the two, the milling driven gear 3019 rotates, thereby driving the transfer shaft 3018 to rotate. The rotation of the transfer shaft 3018 drives the driving synchronous wheel 3024 to rotate together, and further drives the multiple tool discs 3011 to rotate under the connection action of the synchronous belt 3025, thereby driving the tool discs 3011 to rotate under the connection action of the milling shaft 309, so that the multiple milling cutters 3012 rotate around the axis of the central power shaft 301 while also rotating around the axial direction of the milling shaft 309, thereby improving the cylinder liner milling strength and accelerating the cylinder liner milling efficiency.

[0024] For further details, please refer to Figures 4 to 8 As shown: 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-pull inclined groove 3027. The guide groove 3020 is arranged on the opposite surfaces of the upper and lower clamping plates 305. There are multiple guide grooves 3020, which correspond to the number of the first shaft holes 306. The multiple guide grooves 3020 are distributed at equal angles. The guide block 3021 is slidably installed in the guide groove 3020. The tensioning shaft 3022 is fixedly installed between the upper and lower guide blocks 3021. The tensioning shaft 3022 passes 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. 23 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 a double-sided belt tooth setting, the path groove 3026 runs through the top of the clamping plate 305 opened on the upper layer, the number and position of the path groove 3026 correspond one-to-one to the tensioning shaft 3022, the tensioning shaft 3022 runs through the interior of the path groove 3026 and extends to the periphery of the top thereof, the push-pull bevel groove 3027 is opened on the top of the adjusting driving gear 3015, the number of the push-pull bevel grooves 3027 is multiple, the specifications and positions of the multiple 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.

[0025] Specifically, the output shaft of the rotating electric cylinder 303 drives the adjustment driving gear 3015 to rotate and also drives the multiple push-pull inclined grooves 3027 to rotate together, generating thrust on the outer walls of the multiple tensioning shafts 3022, so that the tensioning shafts 3022 push the guide blocks 3021 to slide along the inner walls of the guide grooves 3020, and further drive the tensioning wheel 3023 to move together. When the adjustment arm 308 rotates toward the periphery, 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 rotation of the adjustment arm 308 toward the periphery. At the same time, the moving distance of the tensioning wheel 3023 is suitable for the rotation angle of the adjustment arm 308. Therefore, after the tensioning wheel 3023 moves away from the center of the splint 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 adjusting arm 308 rotates inward, the guide groove 3020 moves toward the center of the splint 305. Therefore, during the inward rotation of the adjusting arm 308, the tensioning wheel 3023 moves toward the center of the splint 305, and the synchronous belt 3025 is continuously tightened. During the inward rotation of the adjusting arm 308, the synchronous belt 3025 will not be loose, thereby ensuring the transmission effect of the synchronous belt 3025.

[0026] For further details, please refer to Fig. 9 As shown: 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.

[0027] Specifically, by clamping the milling cutter 3012 inside the tool groove 30011 and utilizing the contact limiting effect between the inner wall of the tool groove 30011 and the outer wall of the milling cutter 3012, the milling cutter 3012 can be prevented from loosening, thereby ensuring the milling accuracy. At the same time, the limiting effect between the inner wall of the tool groove 30011 and the outer wall of the milling cutter 3012 can also reduce the lateral force of the fixing bolts, thereby avoiding deformation of the bolts fixing the milling cutter 3012.

[0028] In the present scheme, a cylinder liner inner side milling device is used to stand the cylinder liner upright on the bottom processing table of the vertical milling machine 100 and directly below the milling part 300, and fix it with a fixing fixture. The fixing fixture is an existing product, and the specific model and fixing principle are not described in detail here. First, the milling range of the plurality of tool discs 3011 is adjusted through the adjustment unit, so as to be suitable for the milling of the inner side of the cylinder sleeve with different cylinder diameters. Specifically, the CNC control panel of the device transmits an angle instruction to the rotary electric cylinder 303, and the output shaft of the rotary electric cylinder 303 rotates to the parameter angle set by the instruction. The rotation of the output shaft of the rotary electric cylinder 303 also drives the adjustment driving gear 3015 to rotate together through the central adjustment shaft 3014. The rotation of the adjustment driving gear 3015 drives the synchronous rotation of the plurality of adjustment driven gears 3013 meshing therewith. The rotation of the plurality of rotary electric cylinders 303 is connected by the plurality of adjustment shaft pins 307. The plurality of adjustment arms 308 are driven to rotate along the connection with the first shaft hole 306, thereby driving the plurality of tool discs 3011 and the milling cutter 3012 to adjust outward or inward together, and adjusting 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 use requirements of the device) to prevent the output shaft of the rotary electric cylinder 303 from rotating again, thereby ensuring that the milling range of the tool disc 3011 after adjustment will not be changed again, so as to ensure the milling accuracy; At the same time, the rotation of the adjusting driving gear 3015 also drives the multiple push-pull bevel grooves 3027 to rotate together, generating thrust on the outer walls of the multiple tensioning shafts 3022, so that the tensioning shafts 3022 push the guide blocks 3021 to slide along the inner walls of the guide grooves 3020, and further drive the tensioning wheel 3023 to move together. When the adjusting arm 308 rotates toward the periphery, 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 rotation of the adjusting arm 308 toward the periphery. At the same time, the moving distance of the tensioning wheel 3023 is adapted to the rotation angle of the adjusting arm 308, so that the tensioning After the wheel 3023 moves away from the center of the clamp plate 305, it still has a tensioning effect on the synchronous belt 3025 to prevent the synchronous belt 3025 from loosening and ensure the transmission effect of the synchronous belt 3025. When the adjustment arm 308 rotates inward, the guide groove 3020 moves toward the center of the clamp plate 305. Therefore, during the inward rotation of the adjustment arm 308, the tensioning wheel 3023 moves toward the center of the clamp plate 305 to continuously tighten the synchronous belt 3025, so that the synchronous belt 3025 will not be loosened during the inward rotation of the adjustment arm 308, thereby ensuring the transmission effect of the synchronous belt 3025. During milling, the loading seat 500 is driven downward by the lifting mechanism 200 (the lifting mechanism 200 is an existing ball screw or a mobile platform in the form of an electric telescopic cylinder, which can meet the requirements of high-precision up and down movement. The specific structure is not limited, and it can meet the use requirements of the device), and the milling part 300 is released downward at a uniform speed. The central power shaft 301 is driven to rotate by the output shaft of the milling motor 400. The rotation of the central power shaft 301 drives the metal inner shell 304 and the clamping plate 305 to rotate through the connection action of the rotating electric cylinder 303. The rotation of the clamping plate 305 drives the adjustment arm 308, the milling shaft 309, the tool disc 3011 and the milling cutter 3012 to rotate together around the axial direction of the central power shaft 301 through the connection action of a plurality of adjustment shaft pins 307. At the same time, the clamping During the axial rotation of the plate 305 around the central power shaft 301, it also drives the transfer shaft 3018 to rotate together, so that the milling driven gear 3019 makes planetary rotation along the periphery of the sun gear 3016, and under the meshing action of the two, the milling driven gear 3019 produces self-rotation, thereby driving the transfer shaft 3018 to rotate, and the rotation of the transfer shaft 3018 drives the driving synchronous wheel 3024 to rotate together, and further drives the multiple tool discs 3011 to rotate under the connection action of the synchronous belt 3025, thereby driving the tool discs 3011 to rotate under the connection action of the milling shaft rod 309, so that the multiple milling cutters 3012 rotate around the axial direction of the milling shaft rod 309 while rotating around the axis of the central power shaft 301, thereby improving the cylinder liner milling strength and accelerating the cylinder liner milling efficiency.

[0029] While the embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that many changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the 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; The 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 inside of the cylinder sleeve. The milling part (300) comprises a processing part, an adjusting part, a tensioning part and a driving part.

2. A cylinder liner inner side milling device according to claim 1, characterized in that: 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); The 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 portion 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 portion of the inner wall of the metal inner shell (304). A plurality of first axial holes (306) distributed at equal angles are opened on the top of the clamping plate (305).

3. A cylinder liner inner side milling device according to claim 2, characterized in that: 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 portion of the outer wall of the milling shaft (309); A tool disc (3011) is fixedly mounted on the bottom of the milling shaft (309); The milling cutter (3012) is fixedly mounted on the outer surface of the tool disc (3011), and there are a plurality of the milling cutters (3012), and the plurality of the milling cutters (3012) are distributed at equal angles.

4. A cylinder liner inner side milling device according to claim 3, characterized in that: The adjustment unit comprises: An adjusting driven gear (3013) is fixedly mounted on the upper portion of the outer wall of the adjusting shaft pin (307); The center 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).

5. The cylinder liner inner side milling device according to claim 4, characterized in that: 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); The driving synchronous wheel (3024) is rotatably mounted on the middle part of the outer wall of the transfer shaft (3018).

6. The cylinder liner inner side milling device according to claim 5, characterized in that: The tensioning portion comprises: The guide grooves (3020) are formed 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), and the multiple 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), wherein 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 the plurality of driven synchronous wheels (3010), the tension wheel (3023) and the driving synchronous wheel (3024), and the synchronous belt (3025) is provided with double-sided teeth.

7. The cylinder liner inner side milling device according to claim 6, characterized in that: 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 one-to-one to the tensioning shaft (3022), and the tensioning shaft (3022) passes through the inside of the path groove (3026) and extends to the periphery of the top thereof; A 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).

8. The cylinder liner inner side milling device according to claim 7, 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).

9. The cylinder liner inner side milling device according to claim 8, 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.

10. The cylinder liner inner side milling device according to claim 9, 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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