Milling machine for machining small cylinder sleeve

Abstract

The invention relates to the technical field of hardware machining, in particular to a milling machine for machining a small cylinder liner, which comprises an assembly base and a milling structure, a transverse assembly frame is fixedly mounted at the top of the assembly base, and pressure is applied to the outer wall of the small cylinder liner through a structure consisting of first twisting discs at multiple positions, three groups of lifting type pressing plates and elastic pressing plates; meanwhile, the annular rotating plate can rotate outside a structure composed of the positioning center shaft seat and the side cover plate, normal rotation of the small air cylinder sleeve is not affected while the fixing effect of the small air cylinder sleeve is achieved, the rotation resistance of the small air cylinder sleeve is reduced, the multiple sets of pressure applying structures can apply uniform pressure to the air cylinder sleeve in different directions, and the stability of the air cylinder sleeve is improved. And the cylinder sleeve is kept at a stable position in the machining process. Therefore, deformation caused by uneven stress can be avoided, the accuracy of the machining size and the flatness of the surface are guaranteed, the cylinder sleeve can be machined while rotating, frequent stopping and starting are not needed, and the machining efficiency is greatly improved.

Description

Technical Field

[0001] The invention relates to the technical field of hardware processing, in particular to a milling machine for processing a small cylinder sleeve. Background Art

[0002] Small cylinder liners are a key component in small engines or specific mechanical equipment. Small cylinder liners are usually cylindrical and made of high-strength metal materials such as cast iron, aluminum alloy, etc. Its inner surface is precisely machined to ensure good fit and sealing with the piston, and the outer surface needs to be machined using a milling machine.

[0003] After the small cylinder liner is installed on the milling machine fixture, it will be affected by the fixture pressure when it rotates, and the rotation resistance is large. The large rotation resistance will cause the cylinder liner to rotate unsteadily during the processing, resulting in uneven cutting of the tool on the workpiece surface. Summary of the invention

[0004] The object of the present invention is to provide a small milling machine for machining cylinder liners to solve the problems raised in the above-mentioned background technology.

[0005] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: a milling machine for processing a small cylinder sleeve, comprising an assembly base and a milling structure, a transverse assembly frame is fixedly installed on the top of the assembly base, a transverse mounting frame is fixedly installed above the transverse assembly frame, a transverse mounting frame is movably installed in a trapezoidal slide groove provided on the transverse mounting frame, a rectangular assembly plate is fixedly installed on the top of the transverse mounting frame, circular assembly buckles are fixedly installed on both sides of the rectangular assembly plate, a driving motor is coaxially fixedly installed on the circular assembly buckle close to the outer side, a positioning center shaft seat is fixedly installed on the output shaft of the driving motor, an annular rotating plate is movably provided on the outer sleeve of the positioning center shaft seat, side cover plates are provided on both sides of the structure composed of the annular rotating plate and the positioning center shaft seat, and mounting The two side cover plates are fixedly connected by assembly bolts, and the assembly bolts pass through the positioning center shaft seat and are installed on the side cover plates. The near sides of the two side cover plates are rotatably connected with a first rotating ball, and annular slide grooves are opened at the positions of the two sides of the annular rotating plate corresponding to the first rotating ball, and the first rotating ball is rollingly connected with the annular slide groove, and multiple groups of rectangular guide grooves are arranged on the annular rotating plate, and a top assembly plate is fixedly installed on the top of the rectangular guide groove, and a bottom assembly plate is fixedly installed on the bottom of the rectangular guide groove. The rectangular guide groove, the top assembly plate and the bottom assembly plate form a structure rotatably connected with a first screw rod, and the first screw rod is externally threadedly connected with a lifting pressure plate, and the lifting pressure plate is located in the rectangular guide groove, and an elastic pressure plate is fixedly installed on the bottom of the lifting pressure plate.

[0006] Preferably, a first torsion disk is fixedly mounted on the outer end of the first screw rod.

[0007] Preferably, the rectangular guide groove, the top assembly plate and the bottom assembly plate form a fully enclosing structure for the lifting type pressing plate and the elastic pressing plate.

[0008] Preferably, the three rectangular guide grooves are distributed in an annular array with the central axis of the annular rotating plate as the array center.

[0009] Preferably, the rectangular assembly plate located on the other side is provided with a circular guide sleeve, a conical extrusion rod is movably mounted on the circular guide sleeve, and the conical extrusion rod is provided with a plurality of guide grooves distributed in a circular array with the central axis of the conical extrusion rod as the array center, an inclined support rod is fixedly mounted on the side of the rectangular assembly plate, an annular assembly ring is fixedly mounted on the end of the inclined support rod away from the rectangular assembly plate, a plurality of swing rods are rotatably connected to the annular assembly ring, a rotating ball mounting seat is fixedly mounted on the outer wall of the outer end of the swing rod, a second rotating ball is rotatably connected to the rotating ball mounting seat, a second sliding mounting seat is fixedly mounted on the inner end of the swing rod, and an annular assembly frame is fixedly mounted at the position corresponding to the circular guide sleeve on the other side of the rectangular assembly plate, a second screw rod is connected to the inner thread of the annular assembly frame, and an end of the second screw rod close to the conical extrusion rod is rotatably connected to the conical extrusion rod.

[0010] Preferably, a second torsion disk is fixedly mounted on one end of the second screw rod away from the tapered extrusion rod.

[0011] Preferably, a pulley is rotatably connected to the portion of the second sliding mounting seat located in the guide slot, and the pulley is located in the guide slot and rotatably connected to the guide slot.

[0012] Preferably, a protective skin is fixedly mounted on the outer wall of the second sliding mounting seat, and the protective skin is in contact with the outer wall of the tapered extrusion rod.

[0013] Preferably, a transverse connecting plate is transversely fixedly installed on the first sliding mounting seat, end mounting plates are transversely fixedly installed on both sides of the transverse assembly frame, a third screw rod is threaded on the transverse connecting plate, another third screw rod is rotatably connected through the transverse connecting plate, a rotating sleeve rotatably connected to the third screw rod is fixedly installed on the end mounting plate, a servo motor is fixedly connected to the end mounting plate, and the output shaft of the servo motor is fixedly connected to the third screw rod.

[0014] Preferably, the two third screw rods are rotationally connected and threadedly connected to a transverse connecting plate respectively.

[0015] Compared with the prior art, the present invention has the following beneficial effects: 1. By rotating the first twisting disk, the lifting and lowering pressure plates and the elastic pressure plates at this position apply pressure to the small cylinder sleeve and fix it. Then adjust the first twisting disk at other positions, and apply pressure to the outer wall of the small cylinder sleeve through the structure composed of three sets of lifting and lowering pressure plates and elastic pressure plates. At the same time, the annular rotating plate can rotate outside the structure composed of the positioning center shaft seat and the side cover plate. While achieving the fixing effect of the small cylinder sleeve, it does not affect the normal rotation of the small cylinder sleeve and reduces the resistance to the rotation of the small cylinder sleeve. Multiple sets of pressure structures can apply uniform pressure to the cylinder sleeve from different directions, so that the cylinder sleeve maintains a stable position during the processing. This helps to avoid deformation caused by uneven force, thereby ensuring the accuracy of the processing size and the flatness of the surface. The cylinder sleeve can be processed while rotating without frequent stopping and starting, thereby greatly improving the processing efficiency.

[0016] 2. According to the size and cutting position of the small cylinder liner, adjust the position of the relevant structure that positions and supports the small cylinder liner. When adjusting the position, by starting the servo motor on one side, the horizontal mounting frame and the first sliding mounting seat form a structure that moves to drive the rectangular assembly plate to move, thereby realizing the movement of the relevant structure at this position. By starting the servo motor on the other side, the output shaft of the servo motor on the other side drives the corresponding structure to move, thereby ensuring that the two structures respectively support the outer wall and inner wall of the small cylinder liner to ensure the fixing effect of the small cylinder liner.

[0017] 3. When placing the small cylinder liner, rotate the second torsion disk on the other side. The rotation of the second torsion disk drives the rotation of the second screw rod. The other end of the swing rod will separate or gather due to the movement of the tapered extrusion rod. The other ends of the multiple swing rods drive the rotating ball mounting seat and the second rotating ball structure to move, and support at the corresponding position of the small cylinder liner. When the small cylinder liner rotates, the second rotating ball rotates with the small cylinder liner to adapt to the rotation of the small cylinder liner, further enhancing the fixing effect of the small cylinder liner. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a front view structural schematic diagram of the present invention.

[0019] Figure 2 It is a schematic diagram of the structure at the corresponding position of the left side view of the present invention.

[0020] Figure 3 It is a schematic diagram of the structure at the corresponding position on the right side of the present invention.

[0021] Figure 4 It is a structural schematic diagram of the corresponding position of the trapezoidal slideway of the present invention.

[0022] Figure 5 It is a schematic diagram of the structure at the corresponding position of the third screw rod of the present invention.

[0023] Figure 6 It is a structural schematic diagram of the corresponding position of the annular rotating plate of the present invention.

[0024] Figure 7 It is a structural schematic diagram of the corresponding position of the rectangular guide groove of the present invention.

[0025] Figure 8 It is a structural schematic diagram of the corresponding position of the first screw rod of the present invention.

[0026] Fig. 9 It is a schematic diagram of the structure at the corresponding position of the side cover plate of the present invention.

[0027] Fig.10 It is a schematic diagram of the structure at the corresponding position of the first rotating ball of the present invention.

[0028] Fig.11 It is a structural schematic diagram of the corresponding position of the second screw rod of the present invention.

[0029] Fig.12 It is a structural schematic diagram of the corresponding position of the second twisting disk of the present invention.

[0030] Fig.13 It is a schematic diagram of the structure at the corresponding position of the tapered extrusion rod of the present invention.

[0031] Fig.14 It is a structural schematic diagram of the corresponding position of the second sliding mounting seat of the present invention.

[0032] In the figure: 1, assembly base; 2, milling structure; 3, horizontal assembly frame; 4, horizontal mounting frame; 401, trapezoidal slide; 5, first sliding mounting seat; 6, rectangular assembly plate; 7, circular assembly buckle; 8, driving motor; 9, positioning center shaft seat; 10, annular rotating plate; 1001, annular slide; 11, side cover plate; 12, assembly bolt; 13, first rotating ball; 14, rectangular guide groove; 15, top assembly plate; 16, bottom assembly plate; 17, first screw rod; 18, lifting pressure plate; 19, elastic Pressure plate; 20, first torsion disk; 21, circular guide sleeve; 22, conical extrusion rod; 2201, guide slide groove; 23, diagonal support rod; 24, annular assembly ring; 25, swing rod; 26, rotating ball mounting seat; 27, second rotating ball; 28, second sliding mounting seat; 2801, pulley; 29, annular assembly frame; 30, second screw rod; 31, second torsion disk; 32, protective skin; 34, transverse connecting plate; 35, end mounting plate; 36, third screw rod; 37, rotating sleeve; 38, servo motor. DETAILED DESCRIPTION

[0033] In order to make the purpose, technical solution and advantages of the present invention clearer, the technical solution in the embodiment of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiment of the present invention. Obviously, the described embodiment is a part of the embodiment of the present invention, not all 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.

[0034] See also Figures 1 to 14The present invention provides a technical solution: a milling machine for processing small cylinder sleeves, comprising an assembly base 1 and a milling structure 2, wherein a structure for mounting small cylinder sleeves is installed on the assembly base 1, and a structure for milling small cylinder sleeves is provided on the milling structure 2, a transverse assembly frame 3 is fixedly installed on the top of the assembly base 1, the transverse assembly frame 3 is a transversely arranged frame, and sufficient transverse movement space is given to the structure inside the transverse assembly frame 3, a transverse mounting frame 4 is fixedly installed above the transverse assembly frame 3, and a transverse mounting frame 4 is movably installed in a trapezoidal slide groove 401 provided on the transverse mounting frame 4, and the trapezoidal slide groove 401 is a trapezoidal groove body, which limits the movement of a first sliding mounting seat 5 to ensure the stability of the movement of the first sliding mounting seat 5, and the first sliding mounting seat 5 is composed of a rectangular part and two trapezoidal parts, and the two trapezoidal parts correspond to the two trapezoidal slide grooves 401 on the transverse mounting frame 4. The first sliding mounting seat 5 and the transverse mounting frame 4 form a sliding connection structure. A rectangular assembly plate 6 is fixedly installed on the top of the transverse mounting frame 4. The rectangular assembly plate 6 is a vertically arranged rectangular plate. At the same time, a circular groove for installation is arranged at the center of the rectangular assembly plate 6. Circular assembly buckles 7 are fixedly installed on both sides of the rectangular assembly plate 6. The circular assembly buckles 7 are used to protect and fix the output shaft of the drive motor 8. The drive motor 8 is coaxially fixedly installed on the circular assembly buckle 7 close to the outside. A positioning center shaft seat 9 is fixedly installed on the output shaft of the drive motor 8. The positioning center shaft seat 9 is composed of two ring members with different thicknesses, and the outer ring thickness is 1. The thickness of the inner ring is thick, and an annular rotating plate 10 is provided on the outer movable sleeve of the positioning center shaft seat 9. The thickness of the annular rotating plate 10 is the same as the thickness of the annular member on the outside of the positioning center shaft seat 9 to ensure the subsequent installation and fixation of the side cover plate 11. Side cover plates 11 are provided on both sides of the structure composed of the annular rotating plate 10 and the positioning center shaft seat 9. A groove corresponding to the shape of the positioning center shaft seat 9 is provided in the side cover plate 11 to ensure the fixing effect of the side cover plate 11 exerting pressure on the positioning center shaft seat 9. Assembly bolts 12 are provided on the side cover plate 11, and the two side cover plates 11 are fixedly connected by the assembly bolts 12, and the assembly bolts 12 penetrate the positioning center shaft seat 9 and are installed on the side cover plate 11, and the two side cover plates 11 are connected by multiple assembly bolts 12. The annular rotating plate 10 and the side cover plate 11 form a rotating structure. The near sides of the two side cover plates 11 are rotatably connected with the first rotating balls 13. The first rotating balls 13 are located on the inner walls of the side cover plates 11, and the side cover plates 11 and the first rotating balls 13 form a rotating connection structure. Annular slide grooves 1001 are provided at the positions of the first rotating balls 13 on both sides of the annular rotating plate 10. The annular slide grooves 1001 are concentrically arranged with the positioning center shaft seat 9. The first rotating ball 13 is rollingly connected with the annular slide grooves 1001. The first rotating ball 13 is located in the annular slide grooves 1001, and the first rotating ball 13 slides in the annular slide grooves 1001. A plurality of groups of rectangular guide grooves 14 are arranged on the annular rotating plate 10.A top assembly plate 15 is fixedly installed on the top of the rectangular guide groove 14, and a bottom assembly plate 16 is fixedly installed on the bottom of the rectangular guide groove 14. The rectangular guide groove 14, the top assembly plate 15 and the bottom assembly plate 16 form a rectangular structure for the longitudinal sliding of the lifting type pressing plate 18. The first screw rod 17 is rotatably connected to the structure composed of the rectangular guide groove 14, the top assembly plate 15 and the bottom assembly plate 16. The first screw rod 17 is externally threadedly connected to the lifting type pressing plate 18. The lifting type pressing plate 18 is located in the rectangular guide groove 14. An elastic pressure plate 19 is fixedly installed at the bottom of the lifting pressure plate 18. The lifting pressure plate 18 and the elastic pressure plate 19 form a pressure structure for the outer wall of the small cylinder liner, and the elastic pressure plate 19 can be deformed to ensure the pressure effect of the elastic pressure plate 19 on the outer wall of the small cylinder liner. The rectangular guide groove 14, the top assembly plate 15 and the bottom assembly plate 16 form a full surrounding structure for the lifting pressure plate 18 and the elastic pressure plate 19, which limits the lifting range of the structure composed of the lifting pressure plate 18 and the elastic pressure plate 19.

[0035] A first torsion disk 20 is fixedly mounted on the outer end of the first screw rod 17, and the first torsion disk 20 assists in rotating the first screw rod 17. The rotation of the first screw rod 17 drives the lifting and lowering pressure plate 18 and the elastic pressure plate 19 to rise and fall in the rectangular guide groove 14, the top assembly plate 15 and the bottom assembly plate 16, so that the lifting and lowering pressure plate 18 and the elastic pressure plate 19 exert pressure on the corresponding position of the outer wall of the small cylinder sleeve.

[0036] The three rectangular guide grooves 14 are distributed in a circular array with the central axis of the circular rotating plate 10 as the array center, ensuring the uniform distribution of the structure composed of the lifting pressure plate 18 and the elastic pressure plate 19 to ensure the pressure effect on the outer wall of the small cylinder sleeve.

[0037] A circular guide sleeve 21 is provided on the rectangular assembly plate 6 on the other side. A groove corresponding to the shape of the conical extrusion rod 22 is provided at the center of the circular guide sleeve 21 to ensure the normal movement of the conical extrusion rod 22. The conical extrusion rod 22 is movably mounted on the circular guide sleeve 21. The conical extrusion rod 22 is provided with a plurality of guide grooves 2201 distributed in a circular array with the central axis of the conical extrusion rod 22 as the array center. The guide grooves 2201 are used to guide the movement of the second sliding mounting seat 28. The side of the rectangular assembly plate 6 is fixed A diagonal support rod 23 is fixedly installed, and an annular assembly ring 24 is fixedly installed at one end of the diagonal support rod 23 away from the rectangular assembly plate 6. The diagonal support rod 23 and the annular assembly ring 24 form a support frame for installing a swing rod 25, and the radius of the structure composed of the diagonal support rod 23 and the annular assembly ring 24 is much larger than the radius of the conical extrusion rod 22 to ensure the normal movement of the conical extrusion rod 22. A plurality of swing rods 25 are rotatably connected to the annular assembly ring 24, and a rotating ball mounting seat 26 is fixedly installed on the outer wall of the outer end of the swing rod 25. The rotating ball mounting seat The second rotating ball 27 is rotatably connected to the upper surface of the swing rod 26. The rotating ball mounting seat 26 and the second rotating ball 27 form a structure for applying pressure to the inner wall of the small cylinder sleeve. The rotating ball mounting seat 26 and the second rotating ball 27 apply pressure to the inner wall of the small cylinder sleeve to further ensure that the small cylinder sleeve is fixed. The second sliding mounting seat 28 is fixedly installed at the inner end of the swing rod 25. The second sliding mounting seat 28 slides in the guide groove 2201. Through the movement of the tapered extrusion rod 22 with one end larger and the other end smaller, multiple swing rods are pressed. The end of the plurality of swing rods 25 is pressurized, thereby pushing the other ends of the plurality of swing rods 25 to open or retract. An annular assembly frame 29 is fixedly installed at the position corresponding to the circular guide sleeve 21 on the other side of the rectangular assembly plate 6. The annular assembly frame 29 is internally threadedly connected with a second screw rod 30. One end of the second screw rod 30 close to the conical extrusion rod 22 is rotatably connected to the conical extrusion rod 22. The second screw rod 30 is driven to rotate by the second torsion disk 31. The position of the conical extrusion rod 22 is changed by the threaded movement of the second screw rod 30 on the annular assembly frame 29.

[0038] A second twisting disk 31 is fixedly mounted on one end of the second screw rod 30 away from the tapered extrusion rod 22 to assist in driving the second screw rod 30 to rotate, thereby improving the convenience of rotating the second screw rod 30 .

[0039] The part of the second sliding mounting seat 28 located in the guide groove 2201 is rotatably connected to a pulley 2801, and the pulley 2801 is located in the guide groove 2201 and rotatably connected to the guide groove 2201. By sliding the pulley 2801 in the guide groove 2201, the movement of the second sliding mounting seat 28 in the guide groove 2201 is improved, thereby reducing the resistance of the sliding connection between the second sliding mounting seat 28 and the tapered extrusion rod 22, and improving the smoothness of the second sliding mounting seat 28 moving in the tapered extrusion rod 22.

[0040] A protective skin 32 is fixedly installed on the outer wall of the second sliding mounting seat 28. The protective skin 32 fits with the outer wall of the tapered extrusion rod 22. The protective skin 32 protects the outer wall of the second sliding mounting seat 28. At the same time, the protective skin 32 can be deformed. The protective skin 32 is always located outside the tapered extrusion rod 22 to protect the connection position between the second sliding mounting seat 28 and the tapered extrusion rod 22.

[0041] A transverse connecting plate 34 is transversely fixedly installed on the first sliding mounting seat 5, and end mounting plates 35 are transversely fixedly installed on both sides of the transverse assembly frame 3. A third screw rod 36 is threaded on the transverse connecting plate 34, and another third screw rod 36 is rotatably connected to the transverse connecting plate 34. A rotating sleeve 37 rotatably connected to the third screw rod 36 is fixedly installed on the end mounting plate 35, and a servo motor 38 is fixedly connected to the end mounting plate 35. The output shaft of the servo motor 38 is fixedly connected to the third screw rod 36, and the third screw rod 36 is driven to rotate by the output shaft of the servo motor 38. The rotation of the third screw rod 36 drives the structure composed of the end mounting plate 35 and the first sliding mounting seat 5 to move under the limit of the transverse mounting frame 4, thereby changing the movement of the first sliding mounting seat 5 and the rectangular assembly plate 6 on one side, and the third screw rod 36 is driven to rotate by the output shaft of the servo motor 38 on the other side, thereby driving the structure composed of the first sliding mounting seat 5 and the rectangular assembly plate 6 on the other side to move.

[0042] The two third screw rods 36 are rotationally connected and threadedly connected to a transverse connecting plate 34 respectively. The transverse connecting plate 34 is provided with a thread groove and a circular groove larger than the shape of the third screw rods 36 to ensure that the transverse connecting plate 34 is threadedly connected to one third screw rod 36 and movably sleeved on the other third screw rod 36.

[0043] Working principle: The first step: according to the size and cutting position of the small cylinder liner, adjust the position of the relevant structure of the positioning support of the small cylinder liner. When adjusting the position, start the servo motor 38 on one side, and the output shaft of the servo motor 38 drives the corresponding third screw 36 to rotate. The rotation of the third screw 36 drives the transverse connecting plate 34 threadedly connected thereto to move, thereby driving the transverse connecting plate 34 and the end mounting plate 35 to form a structure to move in the transverse mounting frame 4. The transverse mounting frame 4 and the first sliding mounting seat 5 form a structure to drive the rectangular assembly plate 6 to move, thereby realizing the movement of the relevant structure at this position. By starting the servo motor 38 on the other side, the output shaft of the servo motor 38 on the other side drives the corresponding structure to move, thereby ensuring that the two structures respectively support the outer wall and the inner wall of the small cylinder liner to ensure the fixing effect of the small cylinder liner.

[0044] Step 2: When placing the small cylinder sleeve, the small cylinder sleeve is located outside the structure composed of multiple lifting pressure plates 18 and elastic pressure plates 19. By rotating the first torsion disk 20, the rotation of the first torsion disk 20 drives the first screw rod 17 to rotate. The lifting pressure plate 18 threadedly connected thereto is driven to rise and fall in the rectangular guide groove 14 through the rotation of the first screw rod 17. The lifting pressure plate 18 is lifted and lowered in the rectangular guide groove 14 while driving the elastic pressure plate 19 to rise and fall. When the elastic pressure plate 19 contacts the outer wall of the small cylinder sleeve, the elastic pressure plate 19 is deformed. At the same time, the lifting pressure plate 18 and the elastic pressure plate 19 at this position are pressed against the small cylinder sleeve. The cylinder liner is pressurized and fixed, and then the first torsion disk 20 at other positions is adjusted to allow the lifting pressure plate 18 and the elastic pressure plate 19 at other positions to also apply pressure to the outer wall of the small cylinder liner. The outer wall of the small cylinder liner is pressurized by the structure composed of three groups of lifting pressure plates 18 and elastic pressure plates 19 to ensure the fixing effect of the small cylinder liner. At the same time, the annular rotating plate 10 can rotate outside the structure composed of the positioning center shaft seat 9 and the side cover plate 11, so that the small cylinder liner can rotate synchronously with the annular rotating plate 10, while achieving the fixing effect of the small cylinder liner, it does not affect the normal rotation of the small cylinder liner and reduces the resistance to the rotation of the small cylinder liner.

[0045] The third step: when placing the small cylinder sleeve, rotate the second torsion disk 31 on the other side. The rotation of the second torsion disk 31 drives the rotation of the second screw rod 30. The second screw rod 30 moves on the annular assembly frame 29 to change the position of the tapered extrusion rod 22. After the position of the tapered extrusion rod 22 is changed, the second sliding mounting seat 28 will move in the guide slot 2201. At the same time, the pulley 2801 on the second sliding mounting seat 28 will move in the guide slot 2201 to adapt to the movement of the tapered extrusion rod 22. When the second sliding mounting seat 28 moves in the guide slot 2201, the other end of the swing rod 25 will separate or gather due to the movement of the tapered extrusion rod 22. The other ends of the multiple swing rods 25 drive the rotating ball mounting seat 26 and the second rotating ball 27 to form a structure to move and support it at the corresponding position of the small cylinder sleeve. When the small cylinder sleeve rotates, the second rotating ball 27 rotates with the small cylinder sleeve to adapt to the rotation of the small cylinder sleeve.

[0046] Step 4: The lifting pressure plate 18 and the elastic pressure plate 19 on one side form a structure to fix the outer wall of the small cylinder liner, and the rotating ball mounting seat 26 and the second rotating ball 27 on the other side form a structure to support the inner wall of the small cylinder liner, thereby achieving the fixing effect of the small cylinder liner without affecting the normal rotation of the small cylinder liner.

[0047] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent replacements for some of the technical features therein. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. A milling machine for machining a small cylinder liner, comprising an assembly base (1) and a milling structure (2), characterized in that: A transverse assembly frame (3) is fixedly mounted on the top of the assembly base (1), a transverse assembly frame (4) is fixedly mounted above the transverse assembly frame (3), a transverse assembly frame (4) is movably mounted in a trapezoidal slide groove (401) provided on the transverse assembly frame (4), a rectangular assembly plate (6) is fixedly mounted on the top of the transverse assembly frame (4), circular assembly buckles (7) are fixedly mounted on both sides of the rectangular assembly plate (6), a driving motor (8) is coaxially fixedly mounted on the circular assembly buckle (7) close to the outer side, a positioning center shaft seat (9) is fixedly mounted on the output shaft of the driving motor (8), an annular rotating plate (10) is movably sleeved outside the positioning center shaft seat (9), side cover plates (11) are arranged on both sides of the structure composed of the annular rotating plate (10) and the positioning center shaft seat (9), assembly bolts (12) are arranged on the side cover plates (11), the two side cover plates (11) are fixedly connected by the assembly bolts (12), and the assembly bolts (12) The through-positioning center shaft seat (9) is installed on the side cover plate (11), and the near sides of the two side cover plates (11) are both rotatably connected with the first rotating balls (13). Annular sliding grooves (1001) are provided at the positions corresponding to the first rotating balls (13) on both sides of the annular rotating plate (10), and the first rotating balls (13) are rollingly connected to the annular sliding grooves (1001). The annular rotating plate (10) is provided with a plurality of groups of rectangular guide grooves (14), and the tops of the rectangular guide grooves (14) are A top assembly plate (15) is fixedly mounted, and a bottom assembly plate (16) is fixedly mounted at the bottom of the rectangular guide groove (14). A first screw rod (17) is rotatably connected to the structure formed by the rectangular guide groove (14), the top assembly plate (15) and the bottom assembly plate (16). The first screw rod (17) is externally threadedly connected to a lifting pressure plate (18). The lifting pressure plate (18) is located in the rectangular guide groove (14), and an elastic pressure plate (19) is fixedly mounted at the bottom of the lifting pressure plate (18).

2. A small-sized milling machine for machining cylinder sleeves according to claim 1, characterized in that: A first twisting disk (20) is fixedly mounted on the outer end of the first screw rod (17).

3. A small-sized milling machine for machining cylinder sleeves according to claim 2, characterized in that: The rectangular guide groove (14), the top assembly plate (15) and the bottom assembly plate (16) form a fully enclosing structure for the lifting and lowering pressure plate (18) and the elastic pressure plate (19).

4. A small-sized milling machine for machining cylinder sleeves according to claim 3, characterized in that: The three rectangular guide grooves (14) are distributed in a circular array with the central axis of the circular rotating plate (10) as the array center.

5. A small-sized milling machine for machining cylinder liners according to claim 4, characterized in that: A circular guide sleeve (21) is provided on the rectangular assembly plate (6) located on the other side, and a conical extrusion rod (22) is movably mounted on the circular guide sleeve (21). The conical extrusion rod (22) is provided with a plurality of guide slots (2201) distributed in a circular array with the central axis of the conical extrusion rod (22) as the array center. A diagonal support rod (23) is fixedly mounted on the side of the rectangular assembly plate (6), and an annular assembly ring (24) is fixedly mounted on one end of the diagonal support rod (23) away from the rectangular assembly plate (6). The annular assembly ring (24) is rotatably connected to a plurality of swing rods (25). A rotating ball mounting seat (26) is fixedly mounted on the outer wall of the outer end of the swing rod (25), and a second rotating ball (27) is rotatably connected to the rotating ball mounting seat (26). A second sliding mounting seat (28) is fixedly mounted on the inner end of the swing rod (25). An annular mounting frame (29) is fixedly mounted at a position corresponding to the circular guide sleeve (21) on the other side of the rectangular mounting plate (6). A second screw rod (30) is internally threadedly connected to the annular mounting frame (29). An end of the second screw rod (30) close to the tapered extrusion rod (22) is rotatably connected to the tapered extrusion rod (22).

6. A small-sized milling machine for machining cylinder liners according to claim 5, characterized in that: A second twisting disk (31) is fixedly mounted on one end of the second screw rod (30) away from the tapered extrusion rod (22).

7. A small-sized milling machine for machining cylinder liners according to claim 6, characterized in that: A pulley (2801) is rotatably connected to the portion of the second sliding mounting seat (28) located in the guide slide groove (2201); the pulley (2801) is located in the guide slide groove (2201) and is rotatably connected to the guide slide groove (2201).

8. A small-sized milling machine for machining cylinder liners according to claim 7, characterized in that: A protective skin (32) is fixedly mounted on the outer wall of the second sliding mounting seat (28), and the protective skin (32) fits the outer wall of the conical extrusion rod (22).

9. A small-sized milling machine for machining cylinder sleeves according to claim 8, characterized in that: A transverse connecting plate (34) is transversely fixedly mounted on the first sliding mounting seat (5); end mounting plates (35) are transversely fixedly mounted on both sides of the transverse assembly frame (3); a third screw rod (36) is threaded on the transverse connecting plate (34); another third screw rod (36) is rotatably connected to the transverse connecting plate (34); a rotating sleeve (37) rotatably connected to the third screw rod (36) is fixedly mounted on the end mounting plate (35); a servo motor (38) is fixedly connected to the end mounting plate (35); an output shaft of the servo motor (38) is fixedly connected to the third screw rod (36).

10. A small-sized milling machine for machining cylinder liners according to claim 9, characterized in that: The two third screw rods (36) are rotationally connected and threadedly connected to a transverse connecting plate (34) respectively.

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