Safety type milling machine for cylinder liner machining

Abstract

The application relates to the technical field of milling machines, in particular to a safe milling machine for cylinder liner machining, which comprises a magnetic attractor, a plurality of ringed magnetic attractor transmission control rings, a milling cutter distributed in the middle position of the transmission control rings, and the magnetic attractor adsorbs the flying debris during milling machining. The transmission control ring transfers the adsorbed debris by driving the magnetic attractor. A plurality of main position half magnetic columns are evenly ringed around the milling cutter to magnetically attract the flying metal debris during the milling process. The adsorbed metal debris on the main position half magnetic column is transported once every interval, the temporary half magnetic column temporarily replaces the magnetic attraction work when the main position half magnetic column is separated from the magnetic attraction position, thereby not affecting the debris collection work during the milling, the main position half magnetic column is automatically powered off after being separated from the temporary half magnetic column, the metal debris on the main position half magnetic column is scraped down quickly, the clean main position half magnetic column is replaced by the temporary half magnetic column to perform the magnetic attraction work.

Description

Technical Field

[0001] This invention relates to the field of milling machine technology, specifically to a safety milling machine for machining cylinder liners. Background Technology

[0002] When milling cylinder liners, the high-speed rotating milling cutter contacts and cuts the cylinder liner, generating metal chips that fly and scatter. Traditionally, after milling, workers use a handheld air gun to blow away the chips, cleaning the machining table. However, the chips generated during milling can affect the milling process, so it is necessary to collect and remove the chips promptly to prevent them from interfering with the ongoing milling. Existing technology uses large-area airflow to blow away the metal chips, directing them towards a designated collection point. However, this method is inefficient and energy-intensive because the metal chips are small and heavy, requiring strong airflow to move them. With large-area airflow, only the local airflow around the metal chips has a blowing effect, while the strong airflow in other areas does no work, resulting in a significant waste of energy. Considering the characteristics of the metal chips, a low-energy magnetic attraction method can be used to collect them. Therefore, this invention provides a safe milling machine for cylinder liner machining. Summary of the Invention

[0003] The purpose of this invention is to provide a safety milling machine for machining cylinder liners, so as to solve the problems mentioned in the background art.

[0004] To achieve the above objectives, the present invention provides the following technical solution: a safety milling machine for cylinder liner machining, comprising a milling cutter, a milling head for displacing and rotating the milling cutter, a ring frame fixed to the milling head, multiple evenly arranged magnetic chucks mounted on the ring frame, and a multi-control ring that alternately drives the magnetic chucks. The milling cutter is located in the middle of the multi-control ring. The magnetic chucks attract debris ejected during milling, and the multi-control ring transfers and collects the attracted debris by driving the magnetic chucks. The magnetic chucks include:

[0005] The master half-magnetic column and the translation switch circuit set on the master half-magnetic column, and the arc-shaped magnetic adsorption wall on the master half-magnetic column faces the milling cutter;

[0006] A temporary half-magnetic column that is backed by and inverted against the main half-magnetic column and a rotary switch circuit set on the temporary half-magnetic column, wherein the main half-magnetic column and the temporary half-magnetic column share a common axis, and the main half-magnetic column rotates half a turn to make the arc-shaped magnetic wall on the temporary half-magnetic column face the milling cutter.

[0007] A top-position integration for driving the rotation and translation of the master half-magnetic column, the top-position integration being connected to a multi-control ring;

[0008] The bottom component used to limit the position of the main half-magnetic column;

[0009] A unit frame for supporting the top and bottom components, the unit frame being fixed to the ring frame;

[0010] The unit frame also supports a chip removal device, with an integrated transmission connection between the top and top positions of the chip removal device.

[0011] Both the primary and temporary semi-magnetic pillar structures include:

[0012] A row of curved metal plates, which are then assembled to form a curved wall for absorbing debris;

[0013] Each curved metal plate is connected to a corresponding electromagnet;

[0014] And a semi-column fixedly connected to a row of curved metal plates, the semi-column comprising a long plate, a disc fixed at one end of the long plate, and curved plates fixed on both sides of the long plate.

[0015] The top-level integration includes:

[0016] An L-shaped directional plate fixed to the top of the unit frame;

[0017] The L-shaped steering wheel is supported on one side by a dual control unit, one end of which is connected to the main half-magnetic column.

[0018] A shaft coupling device is established between the dual-control and multi-control rings for transmission, and the shaft coupling device is also connected to the chip removal device for transmission.

[0019] The multi-control ring includes a main control ring plate, an inner convex arc plate on the main control ring plate, and an L-shaped pressure plate fixed on the main control ring plate. Multiple L-shaped directional plates are evenly arranged around the bottom of the main control ring plate. The L-shaped directional plates are fitted into the annular grooves opened on the outer wall of the main control ring plate by means of support plates. The main control ring plate is also provided with an external gear ring for external driving.

[0020] The translation switch circuit includes two first inner guide posts, two conductive rings arranged above the main half-magnetic post, and a first outer guide post corresponding to one side of each conductive ring. The first outer guide post is provided with a concave section. The conductive ring is separated from the first outer guide post by translating to the concave section position of the first outer guide post. One end of each first inner guide post is fixedly connected to a conductive ring, and both first inner guide posts are electrically connected to a row of electromagnets in the main half-magnetic post.

[0021] The bottom component includes a bottom support plate with one end fixed to the unit frame, a bottom shaft movably sleeved in a through hole on the bottom support plate, and a semi-circular spring piece fixed to the bottom support plate. The bottom shaft is fixed at the axial position of the end of the semi-cylinder on the temporary semi-magnetic column. Two slots are evenly arranged around the end plate of the semi-cylinder on the temporary semi-magnetic column, and the semi-circular spring pieces are distributed and protrude into the slots. The rotary switch circuit includes two conductive C-shaped columns arranged around the outside of the bottom shaft, a second inner guide column fixedly connected to each conductive C-shaped column, and a second outer guide column distributed on one side of each conductive C-shaped column. The conductive C-shaped column contacts the second outer guide column by rotating half a turn. The two second inner guide columns are electrically connected to a row of electromagnets in the temporary semi-magnetic column.

[0022] The shaft coupling device includes an integrated horizontal plate fixed to an L-shaped directional plate, a multi-control vertical shaft movably sleeved in a column hole on the integrated horizontal plate, a semi-drive assembly also supported on the integrated horizontal plate, a first cam fixed at one end of the multi-control vertical shaft, a second cam fixed at the other end of the multi-control vertical shaft, a first gear fixedly sleeved on the multi-control vertical shaft, and a torsion spring wound on the multi-control vertical shaft. One end of the torsion spring is fixed to the integrated horizontal plate. The L-shaped pressure plate pushes the first cam to make it swing, and the other end of the torsion spring presses the first cam to return to its original swinging position.

[0023] The semi-drive assembly includes a first rack that slides through a square hole in the integrated horizontal plate, an actuating shaft and a journal shaft that are movably sleeved in two through holes in the integrated horizontal plate, and a high-pressure spring plate fixed to the integrated horizontal plate. One end of the journal shaft is connected to the first rack through a fixed gear, and the other end of the journal shaft is connected to the bevel gear fixed at one end of the actuating shaft through a fixed bevel gear. The rotating inner convex arc plate pushes against the first rack it encounters, and then the high-pressure spring plate pushes the first rack back to its original position.

[0024] The dual control system includes a translational pile, and a top shaft and a follower shaft that are movably fitted into two through holes on the translational pile. One end of the follower shaft is connected to a gear on the driving shaft via a fixed long cylindrical gear. The other end of the follower shaft is connected to a bevel gear fixed at one end of the top shaft via a fixed bevel gear for directional transmission. The other end of the top shaft is fixed at the end axis of the upper half of the main magnetic column. The translational pile is connected to the first gear via a row of teeth. The L-shaped directional plate is fitted into the T-shaped groove on the translational pile via a T-shaped post. The translational pile is equipped with a limiting block that restricts its own movement range.

[0025] The chip removal device includes a concave rail fixed on the unit frame, a scraper that slides and rises on the concave rail, a lead screw for driving the scraper, a spring assembly that establishes transmission between the lead screw and the second cam, a concave hook column distributed at the top of the concave rail, and a return control spring connected between the concave hook column and the concave rail. The concave hook column slides through a square hole opened on the concave rail, and the end of the lead screw is movably sleeved in a through hole opened on a support column on the unit frame.

[0026] The scraper includes a return spring, an arc scraper, and a cross post. The concave rail post slides through a rectangular vertical hole in the cross post. The arc scraper slides through a flat plate hole in the cross post. The return spring is connected between the arc scraper and the cross post. The cross post is connected to the lead screw by a row of protruding teeth. One end of the concave hook post is inserted into a groove in the cross post, and the top of the cross post is provided with an inclined surface for the concave hook post to pass through.

[0027] The spring assembly includes a flat support plate fixed on the unit frame, a pressure shaft movably sleeved in a round hole on the flat support plate, an L-shaped fork that slides through a square hole on the flat support plate, a spring fixedly sleeved at one end of the pressure shaft, and an outer moving ring fixedly sleeved on the outside of the spring. The other end of the pressure shaft is connected to a row of teeth on one end of the L-shaped fork via a fixed gear. The other end of the L-shaped fork is connected to a protrusion fixed on the second cam via a groove. The outer moving ring includes an outer ring gear and a positioning plate fixed on one side of the bottom surface of the outer ring gear. The pressure shaft is also movably sleeved in a through hole in the middle of the positioning plate of the outer moving ring. The end of the lead screw is connected to the outer ring gear of the outer moving ring via a fixed gear.

[0028] Compared with the prior art, the beneficial effects of the present invention are:

[0029] 1. Multiple primary semi-magnetic pillars are evenly arranged around the milling cutter to magnetically attract metal chips flying during the milling process. The metal chips attracted on the primary semi-magnetic pillars are transported once at regular intervals. When the primary semi-magnetic pillars are removed from the magnetic attraction position, temporary semi-magnetic pillars temporarily take over the magnetic attraction work, thus not affecting the chip collection work during milling. After the primary and temporary semi-magnetic pillars are separated, the primary semi-magnetic pillars are automatically de-energized, and the metal chips on the primary semi-magnetic pillars are quickly scraped off. The cleaned primary semi-magnetic pillars then replace the temporary semi-magnetic pillars to perform the magnetic attraction work again.

[0030] 2. This invention uses the rotation of a multi-control ring to drive the encountered magnetic accumulators in turn, thereby transferring the metal debris adsorbed on the corresponding main semi-magnetic column. The interval period for debris collection on the main semi-magnetic column can be controlled by controlling the rotation speed of the multi-control ring. Attached Figure Description

[0031] Figure 1 This is a schematic diagram of the structure of the present invention.

[0032] Figure 2 This is a schematic diagram showing the location of the magnetic chuck.

[0033] Figure 3 This is a schematic diagram of the milling cutter position.

[0034] Figure 4 This is a schematic diagram of the location of the multi-control rings.

[0035] Figure 5 This is a schematic diagram of the position of the master half-pillar.

[0036] Figure 6 This is a schematic diagram of the top-level integrated structure.

[0037] Figure 7 This is a schematic diagram of a translation switch circuit.

[0038] Figure 8 This is a schematic diagram of a rotary switch circuit.

[0039] Figure 9 This is a schematic diagram of the shaft coupling device.

[0040] Figure 10 This is a schematic diagram of the semi-drive assembly structure.

[0041] Figure 11 This is a schematic diagram of a dual-controller structure.

[0042] Figure 12 This is a schematic diagram of the chip removal device.

[0043] Figure 13 This is a schematic diagram showing the position of the arc scraper.

[0044] Figure 14 This is a schematic diagram of the mainspring assembly structure.

[0045] Figure 15 This is a schematic diagram of the position of the concave hook column.

[0046] In the diagram: 1. Milling cutter; 2. Milling head; 3. Ring frame; 4. Magnetic chuck; 5. Multi-control ring; 6. Main semi-magnetic column; 7. Temporary semi-magnetic column; 8. Top-position integrated unit; 9. Bottom-position component; 10. Translation switch circuit; 11. Rotary switch circuit; 12. Unit frame; 13. Chip removal device; 14. Arc-shaped metal plate; 15. Electromagnet; 16. Semi-cylinder; 17. L-shaped direction plate; 18. Dual-control device; 19. Shaft coupling device; 20. Main control ring plate; 21. Inner convex arc plate; 22. L-shaped pressure plate; 23. First outer guide post; 24. Conductive ring; 25. First inner guide post; 26. Bottom-position shaft; 27. Half-circle spring; 28. Bottom support plate; 29. ​​Second inner guide post. 9. Conductive C-shaped post 30, second outer guide post 31, first cam 32, torsion spring 33, integrated cross plate 34, semi-drive assembly 35, multi-control vertical shaft 36, first gear 37, second cam 38, strong pressure spring 39, driving shaft 40, journal shaft 41, first rack 42, top position shaft 43, follow-control shaft 44, translational pile 45, concave rail post 46, spring assembly 47, concave folding hook post 48, return control spring 49, lead screw 50, scraper 51, return spring 52, arc scraper 53, cross post 54, outer moving ring 55, spring 56, pressure shaft 57, flat support plate 58, L-shaped fork 59. Detailed Implementation

[0047] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the technical solutions of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0048] Please see Figures 1 to 15 This invention provides a technical solution: a safety milling machine for cylinder liner machining, comprising a milling cutter 1, a milling head 2 for displacing and rotating the milling cutter 1, a ring frame 3 fixed on the milling head 2, multiple evenly arranged magnetic suction devices 4 mounted on the ring frame 3, and a multi-control ring 5 that alternately drives the magnetic suction devices 4. The milling cutter 1 is located in the middle of the multi-control ring 5. The magnetic suction devices 4 attract debris flying during milling. The multi-control ring 5 transfers and collects the attracted debris by driving the magnetic suction devices 4. The magnetic suction devices 4 include:

[0049] The main half-magnetic column 6 and the translation switch circuit 10 set on the main half-magnetic column 6, the arc-shaped adsorption magnetic wall on the main half-magnetic column 6 faces the milling cutter 1;

[0050] The temporary half-magnetic column 7, which is backed by and inverted with the main half-magnetic column 6, and the rotary switch circuit 11 set on the temporary half-magnetic column 7, share a common axis. The main half-magnetic column 6 rotates half a turn so that the arc-shaped magnetic wall on the temporary half-magnetic column 7 faces the milling cutter 1.

[0051] The top-position integrated circuit 8 is used to drive the rotation and translation of the master half-magnetic column 6. The top-position integrated circuit 8 is connected to the multi-control ring 5.

[0052] The bottom component 9 is used to limit the main position semi-magnetic column 6;

[0053] The unit frame 12 is used to support the top integrated component 8 and the bottom component 9. The unit frame 12 is fixed on the ring frame 3.

[0054] The unit frame 12 also supports a chip removal device 13, and the top of the chip removal device 13 and the top position are integrated with a transmission connection 8.

[0055] refer to Figure 7 It is understood that both the primary semi-magnetic pillar 6 and the temporary semi-magnetic pillar 7 structures include:

[0056] A row of curved metal plates 14, and the row of curved metal plates 14 are assembled to form a curved wall for adsorbing debris.

[0057] Each arc-shaped metal plate 14 is connected to a corresponding electromagnet 15;

[0058] And a semi-column 16 fixedly connected to a row of arc-shaped metal plates 14, the semi-column 16 including a long plate, a disc fixed at one end of the long plate and arc plates fixed on both sides of the long plate.

[0059] refer to Figure 6 Understanding, top-level integration 8 includes:

[0060] L-shaped directional plate 17 fixed to the top of unit frame 12;

[0061] The L-shaped steering plate 17 has a dual control 18 supported on one side, and one end of the dual control 18 is connected to the main half-magnetic column 6 via a transmission connection.

[0062] A shaft coupling device 19 is established between the dual control device 18 and the multi-control ring 5 to drive the transmission. The shaft coupling device 19 is also connected to the chip removal device 13.

[0063] refer to Figure 6 Understandably, the multi-control ring 5 includes a main control ring plate 20, an inner convex arc plate 21 set on the main control ring plate 20, and an L-shaped pressure plate 22 fixed on the main control ring plate 20. Multiple L-shaped directional plates 17 are evenly arranged around the bottom of the main control ring plate 20. The L-shaped directional plates 17 are fitted into the annular grooves opened on the outer side wall of the main control ring plate 20 by setting support plates. The main control ring plate 20 is also provided with an external gear ring for external driving.

[0064] refer to Figure 7The translation switch circuit 10 includes two first inner guide posts 25, two conductive rings 24 arranged around the main half-magnetic post 6, and a first outer guide post 23 that is in contact with one side of each conductive ring 24. The first outer guide post 23 is provided with a concave section. The conductive ring 24 is separated from the first outer guide post 23 by translating to the concave section position of the first outer guide post 23. One end of each first inner guide post 25 is fixedly connected to a conductive ring 24, and both first inner guide posts 25 are electrically connected to a row of electromagnets 15 in the main half-magnetic post 6.

[0065] refer to Figure 8 Understandably, the bottom component 9 includes a bottom support plate 28 with one end fixed to the unit frame 12, a bottom shaft 26 movably sleeved in a through hole in the bottom support plate 28, and a semi-circular spring piece 27 fixed to the bottom support plate 28. The bottom shaft 26 is fixed to the axial position of the end of the semi-cylinder 16 on the temporary semi-magnetic column 7. Two slots are evenly arranged around the end plate of the semi-cylinder 16 on the temporary semi-magnetic column 7, and the semi-circular spring pieces 27 are distributed and protrude into the slots. The rotary switch circuit 11 includes two conductive C-shaped posts 30 arranged around the outside of the bottom shaft 26, a second inner guide post 29 fixedly connected to each conductive C-shaped post 30, and a second outer guide post 31 distributed on one side of each conductive C-shaped post 30. The conductive C-shaped post 30 contacts the second outer guide post 31 by rotating half a turn. The two second inner guide posts 29 are electrically connected to a row of electromagnets 15 in the temporary semi-magnetic column 7.

[0066] Milling is achieved through the contact between a high-speed rotating milling cutter 1 and a cylinder liner. During milling, metal chips are ejected and dispersed. These chips encounter nearby master semi-magnetic posts 6 and are magnetically attracted to them. Since many chips adhere to the master semi-magnetic posts 6, they need to be removed promptly. This ensures that the outer wall of the master semi-magnetic posts 6 can continuously attract subsequent ejected chips. (See reference...) Figure 6 The primary half-magnetic column 6 first rotates half a turn, then pushes the temporary half-magnetic column 7 to rotate half a turn. The temporary half-magnetic column 7 briefly performs the work of magnetically attracting debris, replacing the primary half-magnetic column 6. After the primary half-magnetic column 6 completes its rotation, it moves horizontally close to the chip removal device 13. After the primary half-magnetic column 6 and the chip removal device 13 come into contact, the primary half-magnetic column 6 is automatically de-energized. At the same time, the chip removal device 13 cleans the debris on the primary half-magnetic column 6, thus the debris falls off the primary half-magnetic column 6. (Reference) Figure 13 There is enough space below where the debris fell, so a debris collection box can be placed in this space.

[0067] The previous paragraph mentioned the automatic power-off reference for the main half-pillar 6. Figure 7No matter how the main semi-magnetic post 6 rotates, the conductive ring 24 and the first outer guide post 23 remain in constant contact and without power interruption. However, when the main semi-magnetic post 6 and the conductive ring 24 move synchronously, the conductive ring 24 automatically separates from the first outer guide post 23 after encountering the concave section on the first outer guide post 23, causing the main semi-magnetic post 6 to lose power supply. Furthermore, refer to... Figure 8 The temporary half-magnetic column 7 is pushed and rotated half a turn by the rotating main half-magnetic column 6. The temporary half-magnetic column 7 is quickly energized. Because the conductive C-shaped column 30 directly contacts the second outer guide column 31 after rotating half a turn, the electromagnet 15 powered in the temporary half-magnetic column 7 will generate magnetic attraction, which will then conduct and make the arc-shaped metal plate 14 have the ability to magnetically attract metal debris. The first outer guide column 23 and the second outer guide column 31 are both externally connected to the power supply mechanism in the prior art.

[0068] The shaft coupling device 19 includes an integrated horizontal plate 34 fixed on an L-shaped directional plate 17, a multi-control vertical shaft 36 movably sleeved in a column hole on the integrated horizontal plate 34, a semi-drive assembly 35 also supported on the integrated horizontal plate 34, a first cam 32 fixed at one end of the multi-control vertical shaft 36, a second cam 38 fixed at the other end of the multi-control vertical shaft 36, a first gear 37 fixedly sleeved on the multi-control vertical shaft 36, and a torsion spring 33 wound on the multi-control vertical shaft 36. One end of the torsion spring 33 is fixed on the integrated horizontal plate 34. The L-shaped pressure plate 22 pushes the first cam 32 to make it swing. The other end of the torsion spring 33 presses the first cam 32 to swing back to its original position.

[0069] The semi-drive assembly 35 includes a first rack 42 that slides through a square hole in the integrated horizontal plate 34, an actuating shaft 40 and a journal shaft 41 that are respectively movably sleeved in two through holes in the integrated horizontal plate 34, and a high-pressure spring 39 fixed on the integrated horizontal plate 34. One end of the journal shaft 41 is connected to the first rack 42 by a fixed gear, and the other end of the journal shaft 41 is connected to the bevel gear fixed at one end of the actuating shaft 40 by a fixed bevel gear. The inner convex arc plate 21 that moves around the axis pushes against the first rack 42 it encounters, and then one end of the high-pressure spring 39 pushes the first rack 42 back to its original position.

[0070] The dual control unit 18 includes a translational pile 45, and a top shaft 43 and a follower shaft 44 that are movably fitted into two through holes on the translational pile 45. One end of the follower shaft 44 is connected to the gear on the driving shaft 40 by a fixed long cylindrical gear. The other end of the follower shaft 44 is connected to the bevel gear fixed at one end of the top shaft 43 by a fixed bevel gear. The other end of the top shaft 43 is fixed at the end axis of the upper half column 16 of the main half magnetic column 6. The translational pile 45 is connected to the first gear 37 by a row of teeth. The L-shaped directional plate 17 is fitted into the T-shaped groove on the translational pile 45 by a T-shaped column. The translational pile 45 is provided with a limiting block to restrict its own movement range.

[0071] The chip removal device 13 includes a concave rail post 46 fixed on the unit frame 12, a scraper 51 that slides and rises on the concave rail post 46, a lead screw 50 for driving the scraper 51, a spring assembly 47 that establishes a transmission between the lead screw 50 and the second cam 38, a concave hook post 48 distributed at the top of the concave rail post 46, and a return control spring 49 connected between the concave hook post 48 and the concave rail post 46. The concave hook post 48 slides through a square hole opened on the concave rail post 46, and the end of the lead screw 50 is movably sleeved in a through hole opened on a support column on the unit frame 12.

[0072] The scraper 51 includes a return spring 52, an arc scraper 53, and a cross post 54. The concave rail post 46 slides through the rectangular vertical hole opened on the cross post 54. The arc scraper 53 slides through the flat plate hole opened on the cross post 54 by means of a flat plate. The return spring 52 is connected between the arc scraper 53 and the cross post 54. The cross post 54 is connected to the lead screw 50 by means of a row of protruding teeth. One end of the concave hook post 48 is inserted into the groove opened on the cross post 54, and the top of the cross post 54 is provided with an inclined surface for the concave hook post 48 to pass through.

[0073] The spring assembly 47 includes a flat support plate 58 fixed on the unit frame 12, a pressure shaft 57 movably sleeved in a round hole in the flat support plate 58, an L-shaped fork 59 sliding through a square hole in the flat support plate 58, a spring 56 fixedly sleeved at one end of the pressure shaft 57, and an outer moving ring 55 fixedly sleeved on the outside of the spring 56. The other end of the pressure shaft 57 is connected to a row of teeth at one end of the L-shaped fork 59 by a fixed gear. The other end of the L-shaped fork 59 is inserted into a protrusion fixed on the second cam 38 by a plate groove. The outer moving ring 55 includes an outer ring gear and a positioning plate fixed on one side of the bottom surface of the outer ring gear. The pressure shaft 57 is also movably sleeved in a through hole in the middle of the positioning plate of the outer moving ring 55. The end of the lead screw 50 is connected to the outer ring gear of the outer moving ring 55 by a fixed gear.

[0074] The rotation and stopping of the main control ring plate 20 are controlled by the drive mechanism in the existing technology, which in turn controls the inner convex arc plate 21 to push against the first rack 42. The first rack 42 translates and drives the neck shaft 41 to rotate half a turn. Then, the driving shaft 40 drives the follower shaft 44 to rotate half a turn. Next, the top shaft 43 drives the semi-cylinder 16 on the main semi-magnetic column 6 to rotate half a turn. In this way, the main semi-magnetic column 6 can be controlled to rotate half a turn.

[0075] After the main semi-magnetic column 6 rotates half a turn, it moves away from the temporary semi-magnetic column 7 to prevent the magnetic attraction force on the temporary semi-magnetic column 7 from affecting the falling off of the debris on the main semi-magnetic column 6. During the circumferential motion of the inner convex arc plate 21, the inner convex arc plate 21 pushes the first rack 42 for a period of time. During this period, the swing and reset of the first cam 32 are completed. During this period, the L-shaped pressure plate 22 pushes the first cam 32 it encounters. The swing of the first cam 32 drives the multi-control vertical shaft 36 to rotate. Then the first gear 37 rotates to drive the translation pile 45 to translate, and then drives the main semi-magnetic column 6 to translate through the top shaft 43. The main semi-magnetic column 6 and the temporary semi-magnetic column 7 separate. Then the main semi-magnetic column 6 is automatically de-energized. In addition, the second cam 38 swings synchronously with the first cam 32. The swing of the second cam 38 drives the L-shaped fork 59 to translate, which in turn causes the spring 56 to contract and store power when the main semi-magnetic column 6 strikes the concave hook column 48. Figure 12 The concave hook post 48 moves to the right, and the cross post 54, which loses its locking position, can then descend. The spring 56 releases its power to control the rotation of the outer moving ring 55. The lead screw 50 rotates rapidly multiple times to drive the cross post 54 to descend. The cross post 54 drives the arc scraper 53. The rapidly descending arc scraper 53 scrapes the magnetic outer wall on the main half-magnetic post 6, quickly scraping off the magnetic debris on the main half-magnetic post 6. At this time, the main half-magnetic post 6 no longer has a magnetic function because it is automatically powered off.

[0076] After the debris falls off the main half-magnetic column 6, the main half-magnetic column 6 moves in the opposite direction to reset. Then, the main half-magnetic column 6 is energized and magnetized. The main half-magnetic column 6 resets and rotates to face the milling cutter 1, while the temporary half-magnetic column 7 is pushed and reset to rotate half a turn. The main half-magnetic column 6 continues to perform the work of adsorbing metal debris. In addition, the cross column 54 rises again under the reverse drive, and the cross column 54 and the concave hook column 48 are re-engaged. That is, the scraper 51 automatically rises and resets. The reason for the reset braking mentioned in this paragraph is that after the L-shaped pressure plate 22 pushes the first cam 32, the L-shaped pressure plate 22 and the first cam 32 are misaligned and separated. In this way, the first cam 32 swings back to reset. Then, the inner convex arc plate 21 separates from the contacting first rack 42, and the first rack 42 also moves in the opposite direction to reset.

[0077] The present invention uses multiple main semi-magnetic pillars 6 evenly arranged around the milling cutter 1 to magnetically attract metal chips. The magnetic attraction force is relative, allowing a small number of metal chips to escape the magnetic attraction control, while most of the metal chips are magnetically transferred away, thus avoiding the problems caused by the accumulation of metal chips.

[0078] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A safety milling machine for machining cylinder liners, characterized in that: The device includes a milling cutter, a milling machine head that moves and rotates the milling cutter, a ring frame fixed to the milling machine head, multiple evenly arranged magnetic chucks mounted on the ring frame, and a multi-control ring that alternately drives the magnetic chucks. The milling cutter is located in the middle of the multi-control ring. The magnetic chucks attract debris ejected during milling, and the multi-control ring transfers and collects the attracted debris by driving the magnetic chucks. The magnetic chucks include: The master half-magnetic column and the translation switch circuit set on the master half-magnetic column, and the arc-shaped magnetic adsorption wall on the master half-magnetic column faces the milling cutter; A temporary half-magnetic column that is backed by and inverted against the main half-magnetic column and a rotary switch circuit set on the temporary half-magnetic column, wherein the main half-magnetic column and the temporary half-magnetic column share a common axis, and the main half-magnetic column rotates half a turn to make the arc-shaped magnetic wall on the temporary half-magnetic column face the milling cutter. A top-position integration for driving the rotation and translation of the master half-magnetic column, the top-position integration being connected to a multi-control ring; The bottom component used to limit the position of the main half-magnetic column; A unit frame for supporting the top and bottom components, the unit frame being fixed to the ring frame; The unit frame also supports a chip removal device, with an integrated transmission connection between the top and top positions of the chip removal device; Both the primary and temporary semi-magnetic pillar structures include: A row of curved metal plates, which are then assembled to form a curved wall for absorbing debris; Each curved metal plate is connected to a corresponding electromagnet; And a semi-column fixedly connected to a row of arc-shaped metal plates, the semi-column comprising a long plate, a disc fixed at one end of the long plate, and arc plates fixed on both sides of the long plate; The top-level integration includes: An L-shaped directional plate fixed to the top of the unit frame; The L-shaped steering wheel is supported on one side by a dual control unit, one end of which is connected to the main half-magnetic column. A shaft coupling device is established between the dual-control and multi-control rings for transmission, and the shaft coupling device is also connected to the chip removal device for transmission. The multi-control ring includes a main control ring plate, an inner convex arc plate on the main control ring plate, and an L-shaped pressure plate fixed on the main control ring plate. Multiple L-shaped directional plates are evenly arranged around the bottom of the main control ring plate. The L-shaped directional plates are fitted into the annular grooves opened on the outer wall of the main control ring plate by means of support plates. The main control ring plate is also provided with an external gear ring for external driving.

2. The safety milling machine for cylinder liner machining according to claim 1, characterized in that: The translation switch circuit includes two first inner guide posts, two conductive rings arranged above the main half-magnetic post, and a first outer guide post corresponding to one side of each conductive ring. The first outer guide post is provided with a concave section. The conductive ring is separated from the first outer guide post by translating to the concave section position of the first outer guide post. One end of each first inner guide post is fixedly connected to a conductive ring, and both first inner guide posts are electrically connected to a row of electromagnets in the main half-magnetic post.

3. A safety milling machine for machining cylinder liners according to claim 1, characterized in that: The bottom component includes a bottom support plate with one end fixed to the unit frame, a bottom shaft movably sleeved in a through hole on the bottom support plate, and a semi-circular spring piece fixed to the bottom support plate. The bottom shaft is fixed at the axial position of the end of the semi-cylinder on the temporary semi-magnetic column. Two slots are evenly arranged around the end plate of the semi-cylinder on the temporary semi-magnetic column, and the semi-circular spring pieces are distributed and protrude into the slots. The rotary switch circuit includes two conductive C-shaped columns arranged around the outside of the bottom shaft, a second inner guide column fixedly connected to each conductive C-shaped column, and a second outer guide column distributed on one side of each conductive C-shaped column. The conductive C-shaped column contacts the second outer guide column by rotating half a turn. The two second inner guide columns are electrically connected to a row of electromagnets in the temporary semi-magnetic column.

4. A safety milling machine for machining cylinder liners according to claim 1, characterized in that: The shaft coupling device includes an integrated horizontal plate fixed to an L-shaped directional plate, a multi-control vertical shaft movably sleeved in a column hole on the integrated horizontal plate, a semi-drive assembly also supported on the integrated horizontal plate, a first cam fixed at one end of the multi-control vertical shaft, a second cam fixed at the other end of the multi-control vertical shaft, a first gear fixedly sleeved on the multi-control vertical shaft, and a torsion spring wound on the multi-control vertical shaft. One end of the torsion spring is fixed to the integrated horizontal plate. The L-shaped pressure plate pushes the first cam to make it swing, and the other end of the torsion spring presses the first cam to return to its original swinging position.

5. A safety milling machine for machining cylinder liners according to claim 4, characterized in that: The semi-drive assembly includes a first rack that slides through a square hole in the integrated horizontal plate, an actuating shaft and a journal shaft that are movably sleeved in two through holes in the integrated horizontal plate, and a high-pressure spring plate fixed to the integrated horizontal plate. One end of the journal shaft is connected to the first rack through a fixed gear, and the other end of the journal shaft is connected to the bevel gear fixed at one end of the actuating shaft through a fixed bevel gear. The rotating inner convex arc plate pushes against the first rack it encounters, and then the high-pressure spring plate pushes the first rack back to its original position.

6. A safety milling machine for machining cylinder liners according to claim 5, characterized in that: The dual control system includes a translational pile, and a top shaft and a follower shaft that are movably fitted into two through holes on the translational pile. One end of the follower shaft is connected to a gear on the driving shaft via a fixed long cylindrical gear. The other end of the follower shaft is connected to a bevel gear fixed at one end of the top shaft via a fixed bevel gear for directional transmission. The other end of the top shaft is fixed at the end axis of the upper half of the main magnetic column. The translational pile is connected to the first gear via a row of teeth. The L-shaped directional plate is fitted into the T-shaped groove on the translational pile via a T-shaped post. The translational pile is equipped with a limiting block that restricts its own movement range.

7. A safety milling machine for machining cylinder liners according to claim 4, characterized in that: The chip removal device includes a concave rail fixed on the unit frame, a scraper that slides and rises on the concave rail, a lead screw for driving the scraper, a spring assembly that establishes transmission between the lead screw and the second cam, a concave hook column distributed at the top of the concave rail, and a return control spring connected between the concave hook column and the concave rail. The concave hook column slides through a square hole opened on the concave rail, and the end of the lead screw is movably sleeved in a through hole opened on a support column on the unit frame.

8. A safety milling machine for machining cylinder liners according to claim 7, characterized in that: The scraper includes a return spring, an arc scraper, and a cross post. The concave rail post slides through a rectangular vertical hole in the cross post. The arc scraper slides through a flat plate hole in the cross post. The return spring is connected between the arc scraper and the cross post. The cross post is connected to the lead screw by a row of protruding teeth. One end of the concave hook post is inserted into a groove in the cross post, and the top of the cross post is provided with an inclined surface for the concave hook post to pass through.

9. A safety milling machine for machining cylinder liners according to claim 7, characterized in that: The spring assembly includes a flat support plate fixed on the unit frame, a pressure shaft movably sleeved in a round hole on the flat support plate, an L-shaped fork that slides through a square hole on the flat support plate, a spring fixedly sleeved at one end of the pressure shaft, and an outer moving ring fixedly sleeved on the outside of the spring. The other end of the pressure shaft is connected to a row of teeth on one end of the L-shaped fork via a fixed gear. The other end of the L-shaped fork is connected to a protrusion fixed on the second cam via a groove. The outer moving ring includes an outer ring gear and a positioning plate fixed on one side of the bottom surface of the outer ring gear. The pressure shaft is also movably sleeved in a through hole in the middle of the positioning plate of the outer moving ring. The end of the lead screw is connected to the outer ring gear of the outer moving ring via a fixed gear.

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