A piston finishing device and its process

Abstract

This invention belongs to the field of piston processing equipment, specifically a piston precision machining device and its process, including a polishing machine; the polishing machine includes a processing table; a pair of support blocks are fixedly connected to the bottom of the processing table; a square groove is opened inside the processing table; a first electric push rod is fixedly connected to the bottom of the processing table; to solve the following technical defects in the piston polishing process: First, when polishing the outer surface of the piston, it is necessary to constantly change the fixed position of the piston to complete the polishing of the entire outer surface of the piston, which is time-consuming and inefficient; Second, the polishing cotton is difficult to completely cover the piston due to the obstruction of the fixed parts, resulting in some edge positions not being polished in one go; Third, when polishing multiple pistons, multiple power sources are often required, leading to energy waste.

Description

Technical Field

[0001] This invention belongs to the field of piston processing equipment, specifically a piston finishing device and its process. Background Technology

[0002] Pistons are reciprocating mechanical parts in the cylinder block of an engine. Their structure can be divided into a top, a head, and a skirt. Pistons have a wide range of applications, including automobiles and drones. As an important component of an engine, pistons require high precision machining and need to be cut, ground, and polished to improve the smoothness of the piston surface and increase its service life as an engine part.

[0003] In the existing technology, the piston polishing process has the following technical defects: First, when polishing the outer surface of the piston, it is necessary to constantly change the fixed position of the piston to complete the polishing of the entire outer surface of the piston, which is time-consuming and results in low efficiency; Second, the polishing cotton is difficult to completely cover the piston due to the obstruction of the fixed parts, resulting in some edge positions not being polished in one go; Third, polishing multiple pistons often requires multiple power sources, resulting in energy waste. Therefore, the present invention provides a piston finishing device and process. Summary of the Invention

[0004] To overcome the shortcomings of existing technologies and address the following technical defects in piston polishing: First, when polishing the outer surface of the piston, it is necessary to continuously change the fixed position of the piston to complete the polishing of the entire outer surface of the piston, which is time-consuming and inefficient. Second, the polishing cotton is obstructed by the fixed parts at the edge areas where the piston is in contact with the top or bottom of the piston, making it difficult to completely cover the piston, resulting in some edge areas not being polished in one go. Third, polishing multiple pistons often requires multiple power sources, leading to energy waste.

[0005] The technical solution adopted by the present invention to solve its technical problem is as follows: A piston precision machining device and process of the present invention includes a polishing machine; the polishing machine includes a machining table; a pair of support columns are fixedly connected to the bottom of the machining table; a square groove is opened inside the machining table; a first electric push rod is fixedly connected to the bottom of the machining table; the telescopic rod of the first electric push rod passes through the machining table and is fixedly connected to a lifting plate, and the lifting plate is slidably connected in the square groove; a set of fixing components is provided in the square groove; the fixing components fix the position of the piston by the displacement of the lifting plate; an F plate is fixedly connected to the top of the machining table; a driving plate is provided on the top of the F plate; a motor is fixedly connected to the top of the driving plate through an L plate; a polishing component is provided in the F plate; the polishing component is driven by the motor.

[0006] Preferably, the fixing assembly includes a rotating ring and a lifting unit; a set of rotating rings is fixedly connected to the top of the lifting plate; a rotating shaft is rotatably connected inside the rotating rings; vertical sliding grooves are provided on both side walls of the square groove, and both ends of the rotating shaft are slidably connected in the vertical sliding grooves; a support plate is rotatably connected to both ends of the set of rotating shafts; a set of guide grooves are provided on both side walls of the square groove, and the guide grooves on both side walls of the square groove are arranged in a crisscross pattern; a rotating column is rotatably connected to the side wall of the set of support plates, and the rotating column is slidably connected in the guide groove; a set of through grooves is provided at the top of the square groove, and the support plate extends out of the through grooves; a support block is fixedly connected to the top side wall of the pair of support plates; a lifting unit is provided on the side wall of the set of support blocks; the lifting unit drives the piston to rise through the lifting plate.

[0007] Preferably, the lifting unit includes a sliding rod; a first circular groove is formed on the side wall of a group of support blocks; a second circular groove is formed in the first circular groove; the first circular groove and the sliding rod are slidably connected; an arc-shaped block is fixed between the ends of a pair of sliding rods; the second circular groove is fixed to the side wall of the arc-shaped block by a spring.

[0008] Preferably, the polishing assembly includes a first rod and an airbag unit; the output end of the motor is provided with a first rod, and the bottom end of the first rod is rotatably connected to the top of the driving plate; a block is fixedly connected to the top of one horizontal end of the middle layer of the F plate; a set of square grooves are opened on the top of the block, and the square grooves penetrate downward through one horizontal end of the middle layer of the F plate; a square sleeve is provided in each set of square grooves; a second rod is rotatably connected in the square sleeves; the top end of each set of second rods penetrates through the F plate, and an L block is fixedly connected to the bottom end; the driving plate is connected to the second rod through a set of third circular grooves. Rotary connection; a first sprocket is fixedly connected to both the first rod and the second rod; a set of first sprockets is driven by a first chain; a set of second sprockets is rotatably connected to the top of the driving plate through a set of round rods, and the set of second sprockets meshes with the outer side of the first chain; a telescopic rod of a second electric push rod is provided in the middle of the bottom of the driving plate; the bottom end of the second electric push rod is fixedly connected to the top of the middle horizontal end of the F plate; an airbag unit is provided inside the L block; an air pump is fixedly connected to the top of the F plate; the airbag unit is inflated by the air pump.

[0009] Preferably, the airbag unit includes a T-tube; the air outlet of the inflation pump is fixedly connected to the T-tube; a pair of fixing blocks are fixedly connected to the top of the F-plate, and both ends of the T-tube are respectively fixedly connected to the side walls of the pair of fixing blocks; an inflation tube is fixedly connected to the top of a set of second rods through a circular groove; a connecting tube is rotatably connected to the top of the inflation tube; a set of flexible hoses and a connecting tube are fixedly connected to the T-tube; the connecting tube is fixedly connected to the drive plate through an L-column; an airbag groove is opened inside the side wall of the L-block; an L-shaped airbag is glued to the side wall of the airbag groove; L-shaped polishing cotton is fixedly connected between the opposite side walls of the airbag groove; the bottom end of the inflation tube passes through the L-block and is connected to the air inlet of the L-shaped airbag.

[0010] Preferably, each of the two sidewalls of the square groove is provided with an arc-shaped guide groove; a cylinder is slidably connected in the arc-shaped guide groove; the cylinder is fixedly connected to the sidewall of the square sleeve; a first T-groove is provided in the middle of the driving plate; a first T-block is slidably connected in the first T-groove, and the top end of the telescopic rod of the second electric push rod passes through the F-plate and is fixedly connected to the first T-block; a set of movable grooves is provided on the top of the F-plate; and the second rods are all located in the movable grooves.

[0011] Preferably, a set of placement rings is fixedly connected to the top of the processing table, and the cross-section of the placement rings is conical, with the center of the placement rings corresponding to the position of the second rod; a set of limiting ring grooves is provided on the placement rings; a rubber pad is fixedly connected in the limiting ring grooves.

[0012] Preferably, all of the sidewalls of the support blocks are fixedly connected to locking blocks; the sidewalls of the arc-shaped blocks are provided with locking grooves, and the locking blocks and locking grooves are positioned correspondingly.

[0013] Preferably, each of the arc-shaped blocks has an arc groove on its arc-shaped wall; the surface of the arc groove is provided with an anti-slip pad.

[0014] A piston finishing process, which employs the aforementioned piston finishing apparatus, is described below:

[0015] S1 Material Preparation: Select high-quality aluminum alloy materials;

[0016] S2 machining: The selected aluminum alloy material is processed with high precision using CNC machine tools, such as turning, milling, drilling and other processes;

[0017] S3 Grinding and Polishing: The burrs on the piston surface are ground off, and then the piston surface is polished with a polishing machine to improve its smoothness.

[0018] S4 Surface Treatment: The piston's corrosion resistance and service life are improved by spraying, hardening, chrome plating, and other methods.

[0019] The beneficial effects of this invention are as follows:

[0020] 1. The piston precision machining device and process described in this invention, by activating the first electric push rod, causes the lifting plate to rise, simultaneously driving the rotating shaft to slide within the vertical sliding groove. Then, through the establishment of the guide inclined groove, the rotating shaft, during its ascent, drives the rotating column to be guided by the inclined groove, causing a pair of support plates to open to both sides at the same angle, similar to the principle of scissors. Then, the pair of support plates complete the support and fixation of the internal area of ​​the piston skirt. At this time, when the support block contacts the inside of the piston skirt, the initial fixation is completed. As the cross angle of the pair of support plates increases, the internal pressure on the piston skirt continues, making its internal fixation more stable. It also causes the piston as a whole to rise to a certain extent. The fixation of the piston's internal structure avoids the need to change multiple fixing methods when polishing the piston's outer surface, which consumes time and manpower.

[0021] 2. The piston finishing device and process described in this invention, through the establishment of an arc-shaped guide groove, allows the cylinder to slide within the arc-shaped guide groove as the driving plate, second rod, square sleeve, and L-block move downwards. During this downward movement, the arc-shaped guide groove guides the L-block, along with the L-shaped polishing cotton and L-shaped airbag, to move in an arc-shaped downward path until they finally contact the piston surface. This avoids the situation where, if the piston diameter is too large, the L-block descends in a straight line, causing the L-shaped polishing cotton to contact the piston surface, resulting in compression deformation of the bottom end of the L-shaped polishing cotton by the piston top, thus preventing the polishing work from being completed. Attached Figure Description

[0022] The invention will now be further described with reference to the accompanying drawings.

[0023] Figure 1 This is a perspective view of the present invention;

[0024] Figure 2 This is a front sectional view of the present invention;

[0025] Figure 3 yes Figure 2 Enlarged view of point A in the middle;

[0026] Figure 4 This is a side sectional view of the present invention;

[0027] Figure 5 yes Figure 4 Enlarged view at point B in the middle;

[0028] Figure 6 Figure 4 Enlarged view at point C;

[0029] Figure 7 This is a partial structural diagram of the arc-shaped block;

[0030] Figure 8 This is a front sectional view of the present invention and a partial structural diagram of the F-plate;

[0031] Figure 9 This is an exploded view of the drive plate of the present invention;

[0032] Figure 10 This is a side sectional view of the present invention;

[0033] Figure 11 yes Figure 10 Enlarged view at point D;

[0034] Figure 12 This is an explosion diagram of the L-shaped airbag.

[0035] Figure 13 This is a flowchart of a piston finishing process.

[0036] In the diagram: 1. Processing table; 11. Square groove; 12. First electric push rod; 13. Lifting plate; 14. F plate; 15. Drive plate; 16. Motor; 2. Rotating ring; 21. Rotating shaft; 22. Vertical sliding groove; 23. Support plate; 24. Guide inclined groove; 25. Rotating column; 26. Through groove; 27. Support block; 3. Sliding rod; 31. First circular groove; 32. Second circular groove; 33. Arc-shaped block; 4. First rod; 41. Square block; 42. Square groove; 43. Square sleeve; 44. Second rod; 45. L-block. ; 46. First sprocket; 47. First chain; 48. Second sprocket; 49. Second electric push rod; 411. Air pump; 5. T-tube; 51. Fixing block; 52. Inflation tube; 53. Connecting tube; 54. Hose; 55. L-shaped column; 56. Airbag groove; 57. L-shaped airbag; 58. L-shaped polishing cotton; 6. Arc-shaped guide groove; 61. Cylinder; 62. First T-groove; 63. First T-block; 64. Movable groove; 7. Placement ring; 71. Limiting ring groove; 8. Engaging block; 81. Engaging groove; 82. Arc groove. Detailed Implementation

[0037] To make the technical means, creative features, objectives and effects of this invention easier to understand, the invention will be further described below in conjunction with specific embodiments.

[0038] like Figures 1 to 12As shown in the embodiment of the present invention, a piston finishing device and its process include a polishing machine; the polishing machine includes a processing table 1; a pair of support columns are fixedly connected to the bottom of the processing table 1; a square groove 11 is formed inside the processing table 1; a first electric push rod 12 is fixedly connected to the bottom of the processing table 1; the telescopic rod of the first electric push rod 12 passes through the processing table 1 and is fixedly connected to a lifting plate 13, and the lifting plate 13 is slidably connected in the square groove 11; a set of fixing components is provided in the square groove 11; the fixing components fix the position of the piston by the displacement of the lifting plate 13; an F plate 14 is fixedly connected to the top of the processing table 1; a driving plate 15 is provided on the top of the F plate 14; the driving plate 1... A motor 16 is fixed to the top of plate 5 via plate L; a polishing assembly is provided inside plate F 14; the polishing assembly is driven by motor 16; during operation, multiple pistons are placed on the processing table 1, and the first electric push rod 12 is activated to support the inside of the piston skirt, fixing and lifting the piston, making it convenient to polish the overall surface and bottom edge of the piston. The fixing assembly can lift the piston during the fixing process, so that its outer surface does not contact the processing table 1, thus completing the polishing of its outer surface. This fixing method can avoid the need for repeated fixing to complete the polishing of the outer surface of the piston. The polishing assembly is driven by motor 16 to rotate, thus completing the polishing of the piston.

[0039] The fixing assembly includes a rotating ring 2 and a lifting unit; a set of rotating rings 2 are fixedly connected to the top of the lifting plate 13; a rotating shaft 21 is rotatably connected inside the rotating ring 2; vertical sliding grooves 22 are provided on both sides of the square groove 11, and both ends of the rotating shaft 21 are slidably connected in the vertical sliding grooves 22; a set of support plates 23 are rotatably connected to both ends of the set of rotating shafts 21; a set of guide grooves 24 are provided on both sides of the square groove 11, and the guide grooves 24 on both sides of the square groove 11 are arranged in a crisscross pattern; a set of rotating columns 25 are rotatably connected to the side walls of a set of support plates 23, and the rotating columns 25 are slidably connected in the guide grooves 24; a set of through grooves 26 are provided at the top of the square groove 11, and the support plates 23 extend out of the through grooves 26; a set of support blocks 27 are fixedly connected to the top side walls of a pair of support plates 23; a set of lifting units are provided on the side walls of a set of support blocks 27. The lifting unit raises the piston via the lifting plate 13. During operation, the first electric push rod 12 is activated to raise the lifting plate 13, simultaneously causing the rotating shaft 21 to slide within the vertical slide groove 22. Then, through the establishment of the guide groove 24, the rotating shaft 21 can be guided by the tilt of the guide groove 24 during its ascent, causing a pair of support plates 23 to open to both sides at the same angle, similar to the principle of scissors. The pair of support plates 23 then support and fix the internal area of ​​the piston skirt. At this time, when the support block 27 contacts the inside of the piston skirt, the initial fixation is completed. As the cross angle of the pair of support plates 23 increases, the internal pressure on the piston skirt continues, making the internal fixation more stable and causing the piston as a whole to rise to a certain extent. Fixing the inside of the piston avoids the need to change multiple fixing methods when polishing the outer surface of the piston, which consumes time and manpower.

[0040] The lifting unit includes a sliding rod 3; a set of support blocks 27 each have a first circular groove 31 on their sidewalls; a second circular groove 32 is formed in the first circular groove 31; the first circular groove 31 and the sliding rod 3 are slidably connected; an arc-shaped block 33 is fixed between the ends of a pair of sliding rods 3; the second circular groove 32 is fixed to the sidewall of the arc-shaped block 33 by a spring; during operation, when the arc-shaped block 33 initially contacts the inside of the piston skirt, as the distance between the top ends of the pair of support plates 23 increases, and as the arc-shaped block 33 continues to contact the inside of the piston skirt, the arc-shaped block 33... The arc-shaped block 33 drives the sliding rod 3 to slide in the first circular groove 31, and finally causes the spring to retract into the second circular groove 32, thereby making the arc-shaped block 33 and the support block 27 come into contact. The establishment of the second circular groove 32 can avoid the problem that the arc-shaped block 33 and the support block 27 do not come into contact, which would make the internal fixation of the piston not stable enough. In this process, the arc-shaped block 33 initially comes into contact with the inside of the piston, and then, as the spring retracts, it continuously lifts the piston, eventually lifting the piston to a certain height, and finally completing the final fixation by contacting the support block 27 through the arc-shaped block 33.

[0041] The polishing assembly includes a first rod 4 and an airbag unit; the output end of the motor 16 is provided with the first rod 4, and the bottom end of the first rod 4 is rotatably connected to the top of the driving plate 15; a block 41 is fixedly connected to the top of the middle horizontal end of the F plate 14; a set of square grooves 42 are opened on the top of the block 41, and the square grooves 42 penetrate downward through the middle horizontal end of the F plate 14; a square sleeve 43 is provided in each set of square grooves 42; a second rod 44 is rotatably connected in the square sleeve 43; the top of the set of second rods 44 Each end of the drive plate 15 penetrates through plate F 14, and each end of the drive plate 15 is fixedly connected to block L 45 at the bottom. The drive plate 15 is rotatably connected to the second rod 44 via a set of third circular grooves. First sprockets 46 are fixedly connected to both the first rod 4 and the second rod 44. The set of first sprockets 46 is driven by a first chain 47. The top of the drive plate 15 is rotatably connected to a set of second sprockets 48 via a set of circular rods, and the set of second sprockets 48 are all engaged with the outer side of the first chain 47. A second electric push rod 49 is provided in the middle of the bottom of the drive plate 15. The telescopic rod; the bottom end of the second electric push rod 49 is fixedly connected to the top of the middle horizontal end of the F plate 14; the L block 45 is provided with an airbag unit; an air pump 411 is fixedly connected to the top of the F plate 14; the airbag unit is inflated by the air pump 411; during operation, the first rod 4 is driven to rotate by electric drive, and a set of first sprockets 46 are driven to rotate by the first chain 47, so as to complete the rotation polishing of the piston by the airbag unit in the L block 45 driven by the second rod 44. The second sprocket 48 and the outer side of the first chain 47 are engaged to meet the requirements of changing the shape of the first chain 47 so that the coverage angle of the first chain 47 and the first sprocket 46 meets the transmission requirements. This is existing technology and will not be described in detail. The second electric push rod 49 drives the driving plate 15 to rise and fall, so that the L block 45, the second rod 44, the square sleeve 43, the driving plate 15 and the motor 16 rise and fall together, so as to complete the raising and lowering of the L block 45 and the airbag unit, avoiding the airbag unit being too close to the piston, which would make it inconvenient to place the piston.

[0042] The airbag unit includes a T-tube 5; the air outlet of the air pump 411 is fixedly connected to the T-tube 5; a pair of fixing blocks 51 are fixedly connected to the top of the F-plate 14, and both ends of the T-tube 5 are respectively fixedly connected to the side walls of the pair of fixing blocks 51; the top ends of a set of second rods 44 are each fixedly connected to an inflation tube 52 through a circular groove; a connecting tube 53 is rotatably connected to the top end of the inflation tube 52; a set of flexible hoses 54 and the connecting tube 53 are fixedly connected to the T-tube 5; the connecting tube 53 is fixedly connected to the driving plate 15 through an L-post 55; an airbag groove 56 is opened inside the side wall of the L-block 45; an L-shaped airbag 57 is glued to the side wall of the airbag groove 56; an L-shaped polishing cotton 58 is fixedly connected between the opposite side walls of the airbag groove 56; the bottom end of the inflation tube 52 passes through the L-block 45. 5. It is connected to the air inlet of the L-shaped airbag 57. During operation, air is pumped into the T-tube 5 and the hose 54 by the air pump 411. The L-column 55 is set up to keep the connecting tube 53 from rotating, and air is pumped into the air inlet tube 52 through the hose 54 to complete the inflation of the L-shaped airbag 57. When the airbag is fully inflated, the bulging side of the airbag pushes the elastic L-shaped polishing cotton 58 into an arc shape to contact the top of the piston and the outer circular wall. This makes the L-shaped polishing cotton 58 and the piston soft contact polishing. The soft contact increases the polishing contact area, increases the polishing efficiency, and avoids damage to the piston surface caused by hard polishing. The soft contact polishing can also polish pistons with small radius differences, thus increasing the polishing applicability range.

[0043] A set of square grooves 42 has arc-shaped guide grooves 6 on both side walls; a cylinder 61 is slidably connected in the arc-shaped guide groove 6; the cylinder 61 is fixedly connected to the side wall of the square sleeve 43; a first T-groove 62 is opened in the middle of the driving plate 15; a first T-block 63 is slidably connected in the first T-groove 62, and the top end of the telescopic rod of the second electric push rod 49 passes through the F plate 14 and is fixedly connected to the first T-block 63; a set of movable grooves 64 is opened on the top of the F plate 14; a set of second rods 44 are all located in the movable grooves 64; during operation, the arc-shaped guide grooves 6 allow the driving plate 15, the second rods 44, the square sleeve 43 and the L-block 45 to move downwards, and the cylinder 61... As the square sleeve 43 slides within the arc-shaped guide groove 6, it drives the second rod 44, the driving plate 15, and the L-shaped block 45 downwards. The arc-shaped guide groove 6 guides the L-shaped block 45, along with the L-shaped polishing cotton 58 and the L-shaped airbag 57, to descend in an arc until they finally contact the piston surface. This prevents the L-shaped polishing cotton 58 from contacting the piston surface if the piston diameter is too large, thus avoiding compression deformation of the bottom end of the L-shaped polishing cotton 58 by the piston top and preventing polishing from being completed. Furthermore, the vertical end of the L-shaped polishing cotton 58 is longer, ensuring that the L-shaped polishing cotton 58 can polish the bottom end of the piston skirt even when the piston rises.

[0044] A set of placement rings 7 are fixedly connected to the top of the processing table 1. The placement rings 7 have a conical cross-section, and the center of the placement rings 7 corresponds to the position of the second rod 44. A set of limiting ring grooves 71 are provided on the placement rings 7. A rubber pad is fixedly connected in the limiting ring grooves 71. During operation, the placement rings 7 and the limiting ring grooves 71 can provide position guidance for the piston, making the piston position more accurate. The conical cross-section of the placement rings 7 can increase the stability of piston placement. The rubber pad can prevent the limiting ring grooves 71 from making hard contact with the piston, thus avoiding scratches on the piston.

[0045] Each set of support blocks 27 has a locking block 8 fixedly attached to its sidewall; the arc-shaped block 33 has a locking groove 81 on its sidewall, and the locking block 8 and the locking groove 81 are positioned correspondingly; the locking block 8 and the locking groove 81 have a wavy cross-section; during operation, the locking block 8 and the locking groove 81 can be used to make the support block 27 and the arc-shaped block 33 contact each other, and when the piston is finally fixed and raised, the locking block 8 engages in the locking groove 81, making the contact between the support block 27 and the arc-shaped block 33 more stable, thus achieving a more stable fixation of the piston. The wavy cross-section can increase structural stability.

[0046] Each of the arc-shaped blocks 33 has an arc groove 82 on its arc-shaped wall; the surface of the arc groove 82 is provided with an anti-slip pad; during operation, the arc groove 82 allows the arc block 33 to rotate at different angles when fixing pistons of different diameters, but the surface in contact with the inside of the piston skirt is always arc-shaped, increasing the contact area with the inside of the piston skirt and making the fixing method more stable.

[0047] like Figure 13 As shown in the embodiment of the present invention, a piston finishing process is provided. This process uses the piston finishing device described above, and the process is as follows:

[0048] S1 Material Preparation: Select high-quality aluminum alloy materials;

[0049] S2 machining: The selected aluminum alloy material is processed with high precision using CNC machine tools, such as turning, milling, drilling and other processes;

[0050] S3 Grinding and Polishing: The burrs on the piston surface are ground off, and then the piston surface is polished with a polishing machine to improve its smoothness.

[0051] S4 Surface Treatment: The piston's corrosion resistance and service life are improved by spraying, hardening, chrome plating, and other methods.

[0052] Working principle: By placing multiple pistons on the processing table 1, the first electric push rod 12 is activated to support the inside of the piston skirt, fixing and lifting the pistons to facilitate polishing of the overall surface and bottom edge of the pistons. The fixing assembly lifts the pistons during the fixing process, preventing their outer surface from contacting the processing table 1, thus completing the polishing of their outer surface. This fixing method avoids the need for repeated fixing to complete the polishing of the piston's outer surface. The polishing assembly is driven by the motor 16 to rotate, completing the polishing of the pistons. By activating the first electric push rod 12, the lifting plate 13 is raised, simultaneously driving the rotating shaft 21 to slide within the vertical sliding groove 22. Then, through the establishment of the guide inclined groove 24, it can... During the upward movement of the rotating shaft 21, the rotating column 25 is guided by the inclined guide groove 24, causing the pair of support plates 23 to open to both sides at the same angle, similar to the principle of scissors. Then, the pair of support plates 23 complete the support and fixation of the internal area of ​​the piston skirt. At this time, when the support block 27 contacts the inside of the piston skirt, the initial fixation is completed. As the cross angle of the pair of support plates 23 increases, the internal pressure on the piston skirt continues, making its internal fixation more stable. This also causes the piston as a whole to rise to a certain extent. Fixing the inside of the piston avoids the need to change multiple fixing methods when polishing the outer surface of the piston, which is time-consuming and labor-intensive. When the arc-shaped block 33 initially contacts the inside of the piston skirt, as the distance between the top ends of the pair of support plates 23 increases, the arc-shaped block... 33 continues to contact the inside of the piston skirt, causing the arc-shaped block 33 to drive the sliding rod 3 to slide within the first circular groove 31, and finally causing the spring to retract into the second circular groove 32, thereby bringing the arc-shaped block 33 into contact with the support block 27. The establishment of the second circular groove 32 can avoid the problem of insufficient fixation of the piston inside due to the arc-shaped block 33 and the support block 27 not contacting each other. During this process, the arc-shaped block 33 initially contacts the inside of the piston, and then, as the spring retracts, it continuously lifts the piston, eventually lifting it to a certain height, and finally completing the final fixation through the contact between the arc-shaped block 33 and the support block 27. The first rod 4 is electrically driven to rotate, and the first chain 47 drives a set of first sprockets 46 to rotate, thereby completing the rotation of the L block 45 through the second rod 44. The airbag unit rotates and polishes the piston. The second sprocket 48 meshes with the outer side of the first chain 47 to change the shape of the first chain 47 so that the coverage angle between the first chain 47 and the first sprocket 46 meets the transmission requirements. This is existing technology and will not be described in detail. The second electric push rod 49 drives the driving plate 15 to rise and fall, causing the L block 45, the second rod 44, the square sleeve 43, the driving plate 15, and the motor 16 to rise and fall together, thus driving the L block 45 and the airbag unit to rise and fall. This avoids the airbag unit being too close to the piston, which would make it inconvenient to place the piston. The air pump 411 inflates the T tube 5 and the hose 54. The L column 55 keeps the connecting tube 53 stationary, and air is inflated into the inflation tube 52 through the hose 54.Inflation of the L-shaped airbag 57 is completed. Once inflated, the bulging side of the airbag pushes the elastic L-shaped polishing cotton 58 into an arc shape, contacting the piston top and outer circular wall. This soft contact polishes the piston, increasing the polishing contact area and efficiency, while avoiding damage to the piston surface caused by hard polishing. Furthermore, this soft contact polishing allows for polishing even pistons with small radius differences, expanding the range of applicable polishing methods. The arc-shaped guide groove 6 allows the driving plate 15... When the second rod 44, square sleeve 43, and L-block 45 move downwards, they slide within the arc-shaped guide groove 6 via the cylinder 61. This causes the square sleeve 43 to move the second rod 44, the driving plate 15, and the L-block 45 downwards. The arc-shaped guide groove 6 guides the L-block 45, along with the L-shaped polishing cotton 58 and the L-shaped airbag 57, in an arc-shaped downward path until they finally contact the piston surface. This prevents the L-block 45 from descending in a straight line if the piston diameter is too large, thus avoiding contact between the L-shaped polishing cotton 58 and the piston surface, which could cause the piston top to impact the bottom of the L-shaped polishing cotton 58. The L-shaped polishing cotton 58 is deformed by compression, thus failing to complete the polishing work. Furthermore, the vertical end of the L-shaped polishing cotton 58 is too long, preventing it from polishing the bottom of the piston skirt when the piston rises. The placement ring 7 and the limiting ring groove 71 provide positional guidance for the piston, making its placement more precise. The tapered cross-section of the placement ring 7 increases the stability of the piston placement. The rubber pad prevents hard contact between the limiting ring groove 71 and the piston, avoiding scratches. The locking block 8 and the locking groove 81... When the support block 27 and the arc-shaped block 33 come into contact, and the piston is finally fixed and lifted, the engaging block 8 engages into the engaging groove 81, making the contact between the support block 27 and the arc-shaped block 33 more stable, resulting in a more stable fixation of the piston. The wavy cross-section increases structural stability. The arc groove 82 allows the arc-shaped block 33 to rotate at different angles when fixing pistons of different diameters, but the surface in contact with the piston skirt is always arc-shaped, increasing the contact area with the piston skirt and making the fixation method more stable.

[0053] The terms "front," "back," "left," "right," "top," and "bottom" all refer to the figures in the accompanying drawings. Figure 1 Based on the perspective of the observer, the side of the device facing the observer is defined as the front, the left side of the observer is defined as the left, and so on.

[0054] In the description of this invention, it should be understood that the terms "center", "longitudinal", "lateral", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limiting the scope of protection of this invention.

[0055] The foregoing has shown and described the basic principles, main features, and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of the invention. Various changes and modifications can be made to the invention without departing from its spirit and scope, and all such changes and modifications fall within the scope of the present invention as claimed. The scope of protection of the present invention is defined by the appended claims and their equivalents.

Claims

1. A piston finishing device, characterized in that: The system includes a polishing machine; the polishing machine includes a processing table; a pair of support columns are fixedly connected to the bottom of the processing table; a square groove is formed inside the processing table; a first electric push rod is fixedly connected to the bottom of the processing table; the telescopic rod of the first electric push rod passes through the processing table and is fixedly connected to a lifting plate, which is slidably connected within the square groove; a set of fixing components is provided within the square groove; the fixing components fix the position of the piston by the displacement of the lifting plate; an F plate is fixedly connected to the top of the processing table; a driving plate is provided on the top of the F plate; a motor is fixedly connected to the top of the driving plate via an L plate; a polishing component is provided within the F plate; the polishing component is driven by the motor. The fixed assembly includes a rotating ring and a lifting unit; a set of rotating rings is fixedly connected to the top of the lifting plate; a rotating shaft is rotatably connected inside the rotating rings; vertical sliding grooves are provided on both sides of the square groove, and both ends of the rotating shaft are slidably connected in the vertical sliding grooves; support plates are rotatably connected to both ends of the set of rotating shafts; a set of guide grooves are provided on both sides of the square groove, and the guide grooves on both sides of the square groove are arranged in a crisscross pattern; a set of rotating columns are rotatably connected to the side walls of the set of support plates, and the rotating columns are slidably connected in the guide grooves; a set of through grooves is provided at the top of the square groove, and the support plates extend out of the through grooves; support blocks are fixedly connected to the top side walls of a pair of support plates; a lifting unit is provided on the side walls of a set of support blocks; the lifting unit rises through the lifting plate, driving the piston to rise; The lifting unit includes a sliding rod; a set of support blocks each have a first circular groove on their sidewalls; a second circular groove is formed inside the first circular groove; the first circular groove and the sliding rod are slidably connected; an arc-shaped block is fixed between the ends of a pair of sliding rods; the second circular groove is fixed to the sidewall of the arc-shaped block by a spring. The polishing assembly includes a first rod and an airbag unit; the output end of the motor is equipped with the first rod, and the bottom end of the first rod is rotatably connected to the top of the driving plate; a block is fixedly connected to the top of the middle horizontal end of the F plate; a set of square grooves are opened on the top of the block, and the square grooves penetrate downward through the middle horizontal end of the F plate; a square sleeve is provided in each set of square grooves; a second rod is rotatably connected in the square sleeve; the top of each set of second rods penetrates through the F plate, and an L block is fixedly connected to the bottom end; the driving plate is rotatably connected to the second rod through a set of third circular grooves; a first sprocket is fixedly connected to both the first rod and the second rod; the set of first sprockets is driven by a first chain; a set of second sprockets is rotatably connected to the top of the driving plate through a set of round rods, and the set of second sprockets meshes with the outer side of the first chain; a telescopic rod of a second electric push rod is provided in the middle of the bottom of the driving plate; the bottom end of the second electric push rod is fixedly connected to the top of the middle horizontal end of the F plate; an airbag unit is provided in the L block; an air pump is fixedly connected to the top of the F plate; the airbag unit is inflated by the air pump. A set of square slots has arc-shaped guide grooves on both sides of the sidewalls; a cylinder is slidably connected in the arc-shaped guide groove; the cylinder and the sidewall of the square slot are fixedly connected; a first T-groove is opened in the middle of the drive plate; a first T-block is slidably connected in the first T-groove, and the top of the telescopic rod of the second electric push rod passes through the F plate and is fixedly connected to the first T-block; a set of movable grooves is opened on the top of the F plate; a set of second rods are all located in the movable grooves.

2. The piston finishing device according to claim 1, characterized in that: The airbag unit includes a T-tube; the outlet end of the inflation pump is fixedly connected to the T-tube; a pair of fixing blocks are fixedly connected to the top of the F-plate, and both ends of the T-tube are fixedly connected to the side walls of the pair of fixing blocks respectively; the top ends of a set of second rods are fixedly connected to inflation tubes through circular grooves; the top ends of the inflation tubes are rotatably connected to connecting tubes; a set of flexible hoses and connecting tubes are fixedly connected to the T-tubes; the connecting tubes are fixedly connected to the drive plate through L-pillars; an airbag groove is opened inside the side wall of the L-block; an L-shaped airbag is glued to the side wall of the airbag groove; L-shaped polishing cotton is fixedly connected between the opposite side walls of the airbag groove; the bottom end of the inflation tube passes through the L-block and is connected to the air inlet of the L-shaped airbag.

3. The piston finishing device according to claim 2, characterized in that: A set of placement rings is fixed to the top of the processing table. The placement rings have a tapered cross-section, and the center of the placement rings corresponds to the position of the second rod. A set of limiting ring grooves is provided on the placement rings. A rubber pad is fixed inside the limiting ring grooves.

4. The piston finishing device according to claim 3, characterized in that: A set of support blocks are fixedly connected to the side walls of the blocks; the side walls of the arc-shaped blocks are provided with locking grooves, and the locking blocks and locking grooves are positioned correspondingly.

5. The piston finishing device according to claim 4, characterized in that: Each set of arc-shaped blocks has an arc groove on its arc wall; the surface of the arc groove is provided with an anti-slip pad.

Images