Safety milling machine for machining cylinder sleeve

Abstract

The invention relates to the technical field of milling machines, in particular to a safe milling machine for machining a cylinder liner, which comprises magnetic attractors and a multi-control ring for driving a plurality of annularly arranged magnetic attractors in turn, a milling cutter is distributed in the middle of the multi-control ring, and the magnetic attractors attract flying chippings during milling, so that the chippings are driven by the multi-control ring to rotate. The multi-control ring transfers and collects adsorbed chippings through a transmission magnetic attraction device, a plurality of main-position semi-magnetic columns are evenly and annularly arranged around a milling cutter to magnetically attract metal chippings flying in the milling process, the metal chippings adsorbed on the main-position semi-magnetic columns are conveyed once every a period of time, and when the main-position semi-magnetic columns are separated from the magnetic attraction position, the metal chippings are conveyed to the milling cutter through the main-position semi-magnetic columns. The temporary semi-magnetic column temporarily replaces magnetic attraction work, so that chipping collection work during milling is not affected, after the main semi-magnetic column and the temporary semi-magnetic column are separated, the main semi-magnetic column is automatically powered off, meanwhile, metal chippings on the main semi-magnetic column are rapidly scraped off, and the main semi-magnetic column which is recovered to be clean replaces the temporary semi-magnetic column for magnetic attraction work.

Description

Technical Field

[0001] The invention relates to the technical field of milling machines, in particular to a safety milling machine for machining cylinder sleeves. Background Art

[0002] When the milling machine processes the cylinder liner, the milling cylinder liner is contacted by the milling cutter rotating at a high speed, and the metal debris generated in the process flies and scatters. The traditional method is that after the milling process is completed, the worker blows air with a handheld jet gun to blow away the debris to make the processing table clean again. However, the debris generated during the milling process may affect the milling process. Therefore, it is necessary to collect and transfer the debris in time during milling to avoid the flying debris from affecting the ongoing milling. The prior art uses a large-area blowing method to blow away the metal debris, so that the metal debris falls toward a collection point in a specified direction, but the efficiency is low and the energy consumption is high. Because the metal debris particles are small and heavy, strong wind is required to blow the debris. When blowing over a large area, only the local air around the metal debris plays a blowing role, and the strong wind airflow in other areas does useless work, which wastes a lot of energy. According to the material characteristics of the metal debris, a low-energy magnetic suction method can be used to absorb and collect the debris. For this purpose, the present invention provides a safe milling machine for cylinder liner processing. Summary of the invention

[0003] The object of the present invention is to provide a safe milling machine for machining cylinder liners to solve the problems raised in the above-mentioned background technology.

[0004] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: a safe milling machine for machining cylinder sleeves, comprising a milling cutter, a milling machine head for driving the milling cutter to move and rotate, a ring frame fixed on the milling machine head, a plurality of evenly arranged magnetic absorbers mounted on the ring frame, and a multi-control ring that is rotated with the arranged magnetic absorbers, wherein the milling cutter is distributed in the middle of the multi-control ring, the magnetic absorber absorbs the flying debris during milling, and the multi-control ring transfers and collects the absorbed debris by driving the magnetic absorber, and the magnetic absorber comprises: The main half magnetic column and the translation switch circuit arranged on the main half magnetic column, the arc-shaped adsorption magnetic wall on the main half magnetic column faces the milling cutter; A temporary half magnetic column which is inverted and back-to-back with the main half magnetic column and a rotary switch circuit arranged on the temporary half magnetic column, wherein the main half magnetic column and the temporary half magnetic column share an axis, and the main half magnetic column rotates half a circle so that the arc-shaped adsorption magnetic wall on the temporary half magnetic column faces the milling cutter; A top position integration for driving the main position half magnetic column to rotate and translate, wherein the top position integration is connected to a multi-control ring; A bottom part used to limit the main half-magnetic column; A unit frame for supporting the top integrated and bottom components, wherein the unit frame is fixed on the ring frame; The unit frame also supports a chip removal device, and the top of the chip removal device is connected with the top position integrated transmission.

[0005] The main half magnetic column and the temporary half magnetic column structure both include: A row of curved metal plates, and a row of curved metal plates are assembled into a curved wall for absorbing debris; Each arc-shaped metal plate has a correspondingly connected electromagnet; And a semi-column fixedly connected with a row of arc-shaped metal plates, the semi-column comprises a long plate, a disk body fixed at one end of the long plate and arc plates fixed at both sides of the long plate.

[0006] The top-level integration includes: An L-shaped direction plate fixed to the top of the unit frame; A double control supported on one side of the L-shaped direction plate, one end of which is transmission-connected to the main half-magnetic column; A transmission shaft coupling device is established between the double control unit and the multi-control ring, and the shaft coupling device is also transmission-connected with the chip removal device.

[0007] The multi-control ring includes a main control ring plate, an inner convex arc plate arranged on the main control ring plate, and an L-shaped pressure plate fixed on the main control ring plate. A plurality of L-shaped direction plates are evenly arranged below the main control ring plate. The L-shaped direction plates are inserted into the annular grooves opened on the outer wall of the main control ring plate by setting support plates. The main control ring plate is also provided with an external gear ring for external driving.

[0008] The translation switch circuit includes two first inner guide pillars, two conductive rings arranged above the main semi-magnetic pillar, and a first outer guide pillar corresponding to one side of each conductive ring. A concave section is arranged on the first outer guide pillar. The conductive ring is separated from the first outer guide pillar by translating to the position of the concave section of the first outer guide pillar. One end of each first inner guide pillar is fixedly connected to a conductive ring, and the two first inner guide pillars are electrically connected to a row of electromagnets in the main semi-magnetic pillar.

[0009] The bottom component includes a bottom support plate with one end fixed on the unit frame, a bottom shaft movably sleeved in a through hole opened in the bottom support plate, and a half-circle spring piece fixed on the bottom support plate. The bottom shaft is fixed at the axial center position of the end of the semi-cylinder on the temporary semi-magnetic column. Two grooves are evenly arranged on the end disk of the semi-cylinder on the temporary semi-magnetic column, and the half-circle spring piece is distributed and protrudes into the groove. The rotary switch circuit includes two conductive C-type columns arranged on the outside of the bottom shaft, a second inner guide column fixedly connected to each conductive C-type column, and a second outer guide column correspondingly distributed on one side of each conductive C-type column. The conductive C-type column contacts the second outer guide column by rotating half a circle, and the two second inner guide columns are electrically connected to a row of electromagnets in the temporary semi-magnetic column.

[0010] The shaft coupling device includes an integrated horizontal plate fixed on the L-shaped direction plate, a multi-control vertical shaft movably sleeved in a column hole opened on the integrated horizontal plate, a semi-drive group also supported by 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 also fixed 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 on the integrated horizontal plate, the L-shaped pressure plate pushes the first cam encountered to make the first cam swing, and the other end of the torsion spring presses the first cam to swing and reset.

[0011] The semi-drive group includes a first rack that slides through a square hole opened in an integrated horizontal plate, a driving shaft and a neck shaft that are movably sleeved on two through holes opened in the integrated horizontal plate, and a high-pressure spring sheet fixed on the integrated horizontal plate. One end of the neck shaft is meshed and driven with the first rack through a fixed gear, and the other end of the neck shaft is vertically driven with the bevel gear fixed at one end of the driving shaft through a fixed bevel gear. The inner convex arc plate that moves around will push the first rack it encounters, and afterwards one end of the high-pressure spring sheet will push the first rack in the opposite direction to reset it.

[0012] The dual control comprises a translation pile, and a top position shaft and a follow-up control shaft which are respectively movably sleeved in two through holes provided on the translation pile, one end of the follow-up control shaft is connected to the gear meshing transmission with the gear provided on the driving shaft through a fixed long cylinder gear, the other end of the follow-up control shaft is connected to the bevel gear fixed at one end of the top position shaft through a fixed bevel gear for direction-changing transmission, the other end of the top position shaft is fixed at the end axial center position of the upper semi-cylinder of the main semi-magnetic column, a row of teeth is provided on the translation pile to be connected to the first gear meshing transmission, a T-shaped column is provided on the L-shaped direction plate to be inserted into the T-shaped slide groove provided on the translation pile, and a limit block is provided on the translation pile to limit its own moving range.

[0013] The chip removal device includes a concave rail column fixed on the unit frame, a scraper that slides and rises and falls on the concave rail column, a screw rod for driving the scraper, a spring group that establishes a transmission between the screw rod and a second cam, a concave folding hook column distributed on the top of the concave rail column, and a control spring connected between the concave folding hook column and the concave rail column. The concave folding hook column slides through a square hole opened on the concave rail column, and the end of the screw rod is movably sleeved in a through hole opened on a pillar set on the unit frame.

[0014] The scraper includes a return spring piece, an arc scraper and a cross column. The concave rail column slides through a rectangular vertical hole opened on the cross column. The arc scraper slides through the flat plate hole opened on the cross column by arranging a flat plate. The return spring piece is connected between the arc scraper and the cross column. A row of convex teeth is arranged on the cross column to engage with the screw rod for transmission connection. One end of the concave hook column is stuck in a groove opened on the cross column, and the top of the cross column is provided with an inclined surface for the concave hook column to pass through.

[0015] The spring group includes a flat supporting plate fixed on the unit frame, a feeding pressure shaft movably sleeved in a circular hole opened on the flat supporting plate, an L-shaped fork frame slidably passing through a square hole opened on the flat supporting plate, a spring fixedly sleeved at one end of the feeding pressure shaft, and an outer moving ring fixedly sleeved outside the spring. The other end of the feeding pressure shaft is in meshing transmission connection with a row of teeth arranged at one end of the L-shaped fork frame through a fixed gear. The other end of the L-shaped fork frame is inserted into a convex column fixed on the second cam through a set plate groove. The outer moving ring includes an outer ring gear and a positioning plate fixed on the bottom surface on one side of the outer ring gear. The feeding pressure shaft is also movably sleeved in a through hole opened in the middle of the positioning plate of the outer moving ring. The end of the lead screw is in meshing transmission connection with the outer ring gear of the outer moving ring through a fixed gear.

[0016] Compared with the prior art, the beneficial effects of the present invention are as follows: 1. By evenly arranging a plurality of main semi-magnetic columns around the milling cutter to magnetically attract the metal chips flying during the milling process, and the metal chips adsorbed on the main semi-magnetic columns are conveyed once every certain period of time. When the main semi-magnetic columns are separated from the magnetic attraction position, the temporary semi-magnetic columns temporarily take over the magnetic attraction work, thus not affecting the chip collection work during milling. After the main semi-magnetic columns and the temporary semi-magnetic columns are separated, the main semi-magnetic columns are automatically powered off, and at the same time, the metal chips on the main semi-magnetic columns are quickly scraped off, and the cleaned main semi-magnetic columns replace the temporary semi-magnetic columns to carry out the magnetic attraction work again.

[0017] 2. In the present invention, the multi-control ring rotates to drive the encountered magnetic attractors in turn, so that the metal chips adsorbed on the corresponding main semi-magnetic columns are transferred away. By controlling the rotation speed of the multi-control ring, the interval period of chip collection on the main semi-magnetic columns can be controlled. Description of the Drawings

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

[0019] Figure 2 It is a schematic diagram of the position of the magnetic attractor.

[0020] Figure 3 It is a schematic diagram of the position of the milling cutter.

[0021] Figure 4 It is a schematic diagram of the position of the multi-control ring.

[0022] Figure 5 It is a schematic diagram of the position of the main semi-magnetic column.

[0023] Figure 6 It is a schematic diagram of the top integrated structure.

[0024] Figure 7 It is a schematic diagram of the structure of the translation switch circuit.

[0025] Figure 8 It is a schematic diagram of the structure of the rotary switch circuit.

[0026] Figure 9 It is a schematic structural diagram of a shaft coupling device.

[0027] Figure 10 It is a schematic structural diagram of a semi-drive group.

[0028] Figure 11 It is a schematic structural diagram of a dual control device.

[0029] Figure 12 It is a schematic structural diagram of a chip removal device.

[0030] Figure 13 It is a schematic diagram of the position of an arc scraping blade.

[0031] Figure 14 It is a schematic structural diagram of a spring group.

[0032] Figure 15 It is a schematic diagram of the position of a concave folding hook column.

[0033] In the figure: milling cutter 1, milling machine head 2, ring frame 3, magnetic absorber 4, multi-control ring 5, main position semi-magnetic column 6, temporary semi-magnetic column 7, top position integration 8, bottom position part 9, translation switch circuit 10, rotation switch circuit 11, unit frame 12, chip removal device 13, arc-shaped metal plate 14, electromagnet 15, semi-cylinder 16, L-shaped direction plate 17, dual control device 18, shaft coupling device 19, main control ring plate 20, inner convex arc plate 21, L-shaped pressing plate 22, first outer guide post 23, conductive ring 24, first inner guide post 25, bottom position shaft 26, semi-circular elastic piece 27, bottom support plate 28, second inner guide post 29, conductive C-shaped column 30, second outer guide post 31, first cam 32, torsion spring 33, integrated horizontal plate 34, semi-drive group 35, multi-control vertical shaft 36, first gear 37, second cam 38, strong pressure elastic piece 39, driving shaft 40, neck shaft 41, first rack 42, top position shaft 43, follow-up control shaft 44, translation pile 45, concave rail column 46, spring group 47, concave folding hook column 48, return control elastic piece 49, lead screw 50, scraping tool 51, return elastic piece 52, arc scraping blade 53, cross column 54, outer moving ring 55, spring 56, feeding pressure shaft 57, flat support plate 58, L-shaped fork 59. Specific implementation manners

[0034] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all of the embodiments. Based on the technical solutions in the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0035] Please refer to Figures 1 to 15The present invention provides a technical solution: a safe milling machine for machining cylinder sleeves, comprising a milling cutter 1, a milling machine head 2 for driving the milling cutter 1 to move and rotate, a ring frame 3 fixed on the milling machine head 2, a plurality of uniformly arranged magnetic absorbers 4 mounted on the ring frame 3, and a multi-control ring 5 that is driven in turn with the arranged magnetic absorbers 4, the milling cutter 1 is distributed in the middle of the multi-control ring 5, the magnetic absorber 4 absorbs the flying debris during milling, the multi-control ring 5 transfers and collects the absorbed debris by driving the magnetic absorber 4, and the magnetic absorber 4 includes: The main half magnetic column 6 and the translation switch circuit 10 arranged 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; A temporary half magnetic column 7 which is inverted and back-to-back with the main half magnetic column 6 and a rotary switch circuit 11 arranged on the temporary half magnetic column 7, the main half magnetic column 6 and the temporary half magnetic column 7 share an axis, and the main half magnetic column 6 rotates half a circle to make the arc-shaped adsorption magnetic wall on the temporary half magnetic column 7 face the milling cutter 1; A top position integration 8 for driving the main position semi-magnetic column 6 to rotate and translate, the top position integration 8 is connected to the multi-control ring 5; A bottom member 9 for limiting the main half-magnetic column 6; A unit frame 12 for supporting the top integration 8 and the bottom component 9, the unit frame 12 being fixed on the ring frame 3; The unit frame 12 also supports a chip removal device 13, and the top end of the chip removal device 13 is transmission-connected to the top integrated device 8.

[0036] refer to Figure 7 It is understood that the structures of the main half magnetic column 6 and the temporary half magnetic column 7 both include: A row of curved metal plates 14, wherein the row of curved metal plates 14 is assembled into a curved wall for absorbing debris; Each arc-shaped metal plate 14 is connected to an electromagnet 15; And a semi-column 16 fixedly connected to a row of arc-shaped metal plates 14, the semi-column 16 includes a long plate, a disk fixed at one end of the long plate and arc plates fixed at both sides of the long plate.

[0037] refer to Figure 6 Understand that top integration 8 includes: An L-shaped direction plate 17 fixed to the top of the unit frame 12; A dual control 18 is supported on one side of the L-shaped direction plate 17, and one end of the dual control 18 is transmission-connected to the main half-magnetic column 6; A transmission shaft coupling device 19 is established between the dual control unit 18 and the multi-control ring 5 , and the shaft coupling device 19 is also transmission-connected to the chip removal device 13 .

[0038] refer to Figure 6It is understood that the multi-control ring 5 includes a main control ring plate 20, an inner convex arc plate 21 provided on the main control ring plate 20, and an L-shaped pressing plate 22 fixed on the main control ring plate 20. A plurality of L-shaped direction plates 17 are evenly arranged in a ring under the main control ring plate 20. The L-shaped direction plates 17 are clamped into the ring grooves opened on the outer side wall of the main control ring plate 20 by arranging support plates. An external gear ring for external driving is also provided on the main control ring plate 20.

[0039] Reference Figure 7 It is understood that the translation switch circuit 10 includes two first inner guide posts 25, two conductive rings 24 arranged in a ring above the main position semi-magnetic column 6, and first outer guide posts 23 in contact with one side of each conductive ring 24. The first outer guide posts 23 are provided with concave folding sections. The conductive rings 24 are separated from the first outer guide posts 23 by translating to the concave folding section positions of the first outer guide posts 23. One end of each first inner guide post 25 is fixedly connected to a conductive ring 24 correspondingly, and both first inner guide posts 25 are electrically connected to a row of electromagnets 15 in the main position semi-magnetic column 6.

[0040] Reference Figure 8 It is understood that the bottom position part 9 includes a bottom support plate 28 fixed at one end on the unit frame 12, a bottom position shaft 26 movably sleeved in a through hole opened on the bottom support plate 28, and a semi-circular elastic sheet 27 fixed on the bottom support plate 28. The bottom position shaft 26 is fixed at the end center position of the semi-column body 16 on the temporary semi-magnetic column 7. Two card slots are evenly arranged in a ring on the end disc of the semi-column body 16 on the temporary semi-magnetic column 7, and the semi-circular elastic sheet 27 protrudes into the card slots. The rotation switch circuit 11 includes two conductive C-shaped columns 30 arranged in a ring outside the bottom position shaft 26, second inner guide posts 29 fixedly connected correspondingly on each conductive C-shaped column 30, and second outer guide posts 31 distributed on one side of each conductive C-shaped column 30. The conductive C-shaped columns 30 contact the second outer guide posts 31 by rotating half a circle. The two second inner guide posts 29 are electrically connected to a row of electromagnets 15 in the temporary semi-magnetic column 7.

[0041] Milling is achieved by the high-speed rotating milling cutter 1 contacting the cylinder sleeve. During the milling process, the metal chips fly and scatter. When the chips encounter the nearby main position semi-magnetic column 6 during the scattering, they will be magnetically attracted to the main position semi-magnetic column 6. A lot of chips adhere to the main position semi-magnetic column 6 and need to be transferred away in time so that the adsorption outer wall of the main position semi-magnetic column 6 can continuously adsorb the subsequent flying chips. Reference Figure 6 , the main position semi-magnetic column 6 first rotates half a circle, and then pushes the temporary semi-magnetic column 7 to rotate half a circle. The temporary semi-magnetic column 7 temporarily performs the work of magnetically attracting chips instead of the main position semi-magnetic column 6. After the main position semi-magnetic column 6 rotates, it translates close to the chip removal device 13. After the main position semi-magnetic column 6 contacts the chip removal device 13, the main position semi-magnetic column 6 automatically cuts off the power, and at the same time the chip removal device 13 cleans the chips on the main position semi-magnetic column 6, so that the chips fall off from the main position semi-magnetic column 6. Reference Figure 13There is enough space below the debris falling position, and a debris collection box is set in this space.

[0042] The reference to the automatic power-off of the main half-magnetic column 6 mentioned in the previous paragraph Figure 7 No matter how the main half magnetic column 6 rotates, the conductive ring 24 and the first outer guide column 23 are always in contact and the power is not cut off. The main half magnetic column 6 and the conductive ring 24 move synchronously. After the conductive ring 24 encounters the concave section on the first outer guide column 23, the conductive ring 24 automatically separates from the first outer guide column 23, causing the main half magnetic column 6 to no longer be powered. In addition, refer to Figure 8 The temporary semi-magnetic column 7 is pushed and rotated half a circle by the rotating main semi-magnetic column 6, and the temporary semi-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 circle. In this way, the electromagnet 15 powered by the temporary semi-magnetic column 7 will generate magnetic attraction, and then conduction makes 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.

[0043] The shaft coupling device 19 includes an integrated horizontal plate 34 fixed on the L-shaped direction plate 17, a multi-control vertical shaft 36 movably sleeved in a column hole opened on the integrated horizontal plate 34, a semi-drive group 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 also fixed 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 encountered to make the first cam 32 swing, and the other end of the torsion spring 33 presses the first cam 32 to swing and reset.

[0044] The semi-drive group 35 includes a first rack 42 that slides through a square hole opened on the integrated cross plate 34, a driving shaft 40 and a neck shaft 41 that are movably sleeved in two through holes opened on the integrated cross plate 34, and a strong pressure spring piece 39 fixed on the integrated cross plate 34. One end of the neck shaft 41 is meshed and driven with the first rack 42 through a fixed gear, and the other end of the neck shaft 41 is vertically driven with the bevel gear fixed at one end of the driving shaft 40 through a fixed bevel gear. The inner convex arc plate 21 that moves around will push the first rack 42 it encounters, and afterwards, one end of the strong pressure spring piece 39 pushes the first rack 42 in the opposite direction to reset it.

[0045] The dual control member 18 includes a translational pile 45, a top position shaft 43 and a follow-up control shaft 44 that are respectively movably sleeved in two through holes formed in the translational pile 45. One end of the follow-up control shaft 44 is in meshing transmission connection with a gear provided on the driving shaft 40 through a fixed long cylindrical gear. The other end of the follow-up control shaft 44 is in reverse transmission with a bevel gear fixed to one end of the top position shaft 43 through a fixed bevel gear. The other end of the top position shaft 43 is fixed at the end axis position of the upper half cylinder 16 of the main position semi-magnetic column 6. A row of teeth is provided on the translational pile 45 to be in meshing transmission connection with the first gear 37. An L-shaped direction plate 17 is provided with a T-shaped column to be inserted into a T-shaped chute formed in the translational pile 45. A limit block for restricting the movement range of itself is provided on the translational pile 45.

[0046] The chip removal device 13 includes a concave rail column 46 fixed on the unit frame 12, a scraping tool 51 sliding and lifting on the concave rail column 46, a lead screw 50 for driving the scraping tool 51, a spring group 47 for establishing transmission between the lead screw 50 and the second cam 38, concave folding hook columns 48 distributed at the top of the concave rail column 46, and a return control elastic sheet 49 connected between the concave folding hook columns 48 and the concave rail column 46. The concave folding hook columns 48 slide through square holes formed in the concave rail column 46. The end of the lead screw 50 is movably sleeved in a through hole formed in a column provided on the unit frame 12.

[0047] The scraping tool 51 includes a return elastic sheet 52, an arc scraping sheet 53 and a cross column 54. The concave rail column 46 slides through a rectangular vertical hole formed in the cross column 54. The arc scraping sheet 53 slides through a flat plate hole formed in the cross column 54 through a flat plate provided thereon. The return elastic sheet 52 is connected between the arc scraping sheet 53 and the cross column 54. A row of convex teeth is provided on the cross column 54 to be in meshing transmission connection with the lead screw 50. One end of the concave folding hook column 48 is inserted into a groove formed in the cross column 54, and a slope for the concave folding hook column 48 to pass through is provided at the top of the cross column 54.

[0048] The spring group 47 includes a flat support plate 58 fixed on the unit frame 12, a feeding shaft 57 movably sleeved in a circular hole formed in the flat support plate 58, an L-shaped fork 59 sliding through a square hole formed in the flat support plate 58, a spring 56 fixedly sleeved at one end of the feeding shaft 57, and an outer moving ring 55 fixedly sleeved outside the spring 56. The other end of the feeding shaft 57 is in meshing transmission connection with a row of teeth provided at one end of the L-shaped fork 59 through a fixed gear. The other end of the L-shaped fork 59 is inserted into a convex column fixed on the second cam 38 through a plate groove. The outer moving ring 55 includes an outer ring gear and a positioning plate fixed on the bottom surface of one side of the outer ring gear. The feeding shaft 57 is also movably sleeved in a through hole formed in the middle of the positioning plate of the outer moving ring 55. The end of the lead screw 50 is in meshing transmission connection with the outer ring gear of the outer moving ring 55 through a fixed gear.

[0049] The rotation and stopping of the main control ring plate 20 are controlled by a driving mechanism in the prior art, thereby controlling the first rack 42 pushed by the inner convex arc plate 21. The first rack 42 translates to drive the neck shaft 41 to rotate half a turn, and then drives the slave control shaft 44 to rotate half a turn through the driving shaft 40. Next, the top position shaft 43 drives the half cylinder 16 on the main position half magnetic column 6 to rotate half a turn, so that the main position half magnetic column 6 can be controlled to rotate half a turn.

[0050] After the main position half magnetic column 6 rotates half a turn, the main position half magnetic column 6 translates away from the temporary half magnetic column 7 to prevent the magnetic attraction force on the temporary half magnetic column 7 from affecting the debris shedding on the main position half magnetic column 6. During the circumferential movement 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 swinging and resetting of the first cam 32 are completed. Because during this period, the L-shaped pressing plate 22 pushes the first cam 32 encountered. The first cam 32 swings to drive the multi-control vertical shaft 36 to rotate, and then the first gear 37 rotates to drive the translation pile 45 to translate, and then drives the main position half magnetic column 6 to translate through the top position shaft 43. The main position half magnetic column 6 and the temporary half magnetic column 7 are separated, and then the main position half magnetic column 6 automatically cuts off the power. In addition, the second cam 38 swings synchronously with the first cam 32. The second cam 38 swings to drive the L-shaped fork 59 to translate, thereby causing the main shaft 57 to rotate and the spring 56 to contract and store energy. When the translating main position half magnetic column 6 impacts the concave folding hook column 48, Figure 12 the concave folding hook column 48 in it translates to the right, and then the cross column 54 that loses the card position can descend. In this way, the spring 56 releases force to control the rotation of the outer moving ring 55. The lead screw 50 rotates quickly for multiple turns to drive the cross column 54 to descend. The cross column 54 drives the arc scraping piece 53. The quickly descending arc scraping piece 53 will scrape the magnetic adsorption outer wall on the main position half magnetic column 6, and quickly scrape off the magnetic adsorbed debris on the main position half magnetic column 6. At this time, the main position half magnetic column 6 has no magnetic adsorption function because it has automatically cut off the power.

[0051] After the debris on the main position half magnetic column 6 falls off, the main position half magnetic column 6 translates in the reverse direction to reset, and then the main position half magnetic column 6 is electrified to generate magnetism. The main position half magnetic column 6 rotates and faces the milling cutter 1 after reset, while the temporary half magnetic column 7 is pushed to reset and rotate half a turn. The main position 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 folding hook column 48 are reconnected, 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 pressing plate 22 pushes the first cam 32, the L-shaped pressing plate 22 and the first cam 32 are misaligned and separated, so that the first cam 32 swings in the reverse direction to reset. Then the inner convex arc plate 21 and the contacted first rack 42 are separated, and the first rack 42 also translates in the reverse direction to reset.

[0052] In the present invention, a plurality of main semi-magnetic columns 6 are evenly arranged around the milling cutter 1 to magnetically attract metal chips. Relatively speaking, the magnetic attraction force allows a small amount of metal chips to break away from the magnetic attraction control, and most of the metal chips are magnetically attracted and transferred away, thus avoiding the problems caused by the accumulation of metal chips.

[0053] Although the embodiments of the present invention have been shown and described, those of ordinary skill in the art can understand that various changes, modifications, substitutions, and variations can be made to these embodiments without departing from the principles and spirit of the present invention. The scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A safety milling machine for machining cylinder liners, characterized in that: The invention comprises a milling cutter, a milling machine head for driving the milling cutter to move and rotate, a ring frame fixed on the milling machine head, a plurality of evenly arranged magnetic absorbers mounted on the ring frame, and a multi-control ring that is driven in turn with the arranged magnetic absorbers. The milling cutter is distributed in the middle of the multi-control ring. The magnetic absorber absorbs the flying debris during milling processing. The multi-control ring transfers and collects the absorbed debris by driving the magnetic absorber. The magnetic absorber comprises: The main half magnetic column and the translation switch circuit arranged on the main half magnetic column, the arc-shaped adsorption magnetic wall on the main half magnetic column faces the milling cutter; A temporary half magnetic column which is inverted and back-to-back with the main half magnetic column and a rotary switch circuit arranged on the temporary half magnetic column, wherein the main half magnetic column and the temporary half magnetic column share an axis, and the main half magnetic column rotates half a circle so that the arc-shaped adsorption magnetic wall on the temporary half magnetic column faces the milling cutter; A top position integration for driving the main position half magnetic column to rotate and translate, wherein the top position integration is connected to a multi-control ring; A bottom part used to limit the main half-magnetic column; A unit frame for supporting the top integrated and bottom components, wherein the unit frame is fixed on the ring frame; The unit frame also supports a chip removal device, and the top of the chip removal device is connected with the top position integrated transmission.

2. A safety milling machine for machining cylinder sleeves according to claim 1, characterized in that: The main half magnetic column and the temporary half magnetic column structure both include: A row of curved metal plates, and a row of curved metal plates are assembled into a curved wall for absorbing debris; Each arc-shaped metal plate has a correspondingly connected electromagnet; And a semi-column fixedly connected with a row of arc-shaped metal plates, the semi-column comprises a long plate, a disk body fixed at one end of the long plate and arc plates fixed at both sides of the long plate.

3. A safety milling machine for machining cylinder liners according to claim 2, characterized in that: The top-level integration includes: An L-shaped direction plate fixed to the top of the unit frame; A double control supported on one side of the L-shaped direction plate, one end of which is transmission-connected to the main half-magnetic column; A transmission shaft coupling device is established between the double control unit and the multi-control ring, and the shaft coupling device is also transmission-connected with the chip removal device.

4. A safety milling machine for machining cylinder liners according to claim 3, characterized in that: The multi-control ring includes a main control ring plate, an inner convex arc plate arranged on the main control ring plate, and an L-shaped pressure plate fixed on the main control ring plate. A plurality of L-shaped direction plates are evenly arranged below the main control ring plate. The L-shaped direction plates are inserted into the annular grooves opened on the outer wall of the main control ring plate by setting support plates. The main control ring plate is also provided with an external gear ring for external driving.

5. The safety milling machine for machining cylinder sleeves according to claim 2, characterized in that: The translation switch circuit includes two first inner guide pillars, two conductive rings arranged above the main semi-magnetic pillar, and a first outer guide pillar corresponding to one side of each conductive ring. A concave section is arranged on the first outer guide pillar. The conductive ring is separated from the first outer guide pillar by translating to the position of the concave section of the first outer guide pillar. One end of each first inner guide pillar is fixedly connected to a conductive ring, and the two first inner guide pillars are electrically connected to a row of electromagnets in the main semi-magnetic pillar.

6. A safety milling machine for machining cylinder liners according to claim 2, characterized in that: The bottom component includes a bottom support plate with one end fixed on the unit frame, a bottom shaft movably sleeved in a through hole opened in the bottom support plate, and a half-circle spring piece fixed on the bottom support plate. The bottom shaft is fixed at the axial center position of the end of the semi-cylinder on the temporary semi-magnetic column. Two grooves are evenly arranged on the end disk of the semi-cylinder on the temporary semi-magnetic column, and the half-circle spring piece is distributed and protrudes into the groove. The rotary switch circuit includes two conductive C-type columns arranged on the outside of the bottom shaft, a second inner guide column fixedly connected to each conductive C-type column, and a second outer guide column correspondingly distributed on one side of each conductive C-type column. The conductive C-type column contacts the second outer guide column by rotating half a circle, and the two second inner guide columns are electrically connected to a row of electromagnets in the temporary semi-magnetic column.

7. The safety milling machine for machining cylinder liners according to claim 4, characterized in that: The shaft coupling device includes an integrated horizontal plate fixed on the L-shaped direction plate, a multi-control vertical shaft movably sleeved in a column hole opened on the integrated horizontal plate, a semi-drive group also supported by 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 also fixed 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 on the integrated horizontal plate, the L-shaped pressure plate pushes the first cam encountered to make the first cam swing, and the other end of the torsion spring presses the first cam to swing and reset.

8. The safety milling machine for machining cylinder liners according to claim 7, characterized in that: The semi-drive group includes a first rack that slides through a square hole opened in an integrated horizontal plate, a driving shaft and a neck shaft that are movably sleeved on two through holes opened in the integrated horizontal plate, and a high-pressure spring sheet fixed on the integrated horizontal plate. One end of the neck shaft is meshed and driven with the first rack through a fixed gear, and the other end of the neck shaft is vertically driven with the bevel gear fixed at one end of the driving shaft through a fixed bevel gear. The inner convex arc plate that moves around will push the first rack it encounters, and afterwards one end of the high-pressure spring sheet will push the first rack in the opposite direction to reset it.

9. A safety milling machine for machining cylinder liners according to claim 8, characterized in that: The dual control comprises a translation pile, and a top position shaft and a follow-up control shaft which are respectively movably sleeved in two through holes provided on the translation pile, one end of the follow-up control shaft is connected to the gear meshing transmission with the gear provided on the driving shaft through a fixed long cylinder gear, the other end of the follow-up control shaft is connected to the bevel gear fixed at one end of the top position shaft through a fixed bevel gear for direction-changing transmission, the other end of the top position shaft is fixed at the end axial center position of the upper semi-cylinder of the main semi-magnetic column, a row of teeth is provided on the translation pile to be connected to the first gear meshing transmission, a T-shaped column is provided on the L-shaped direction plate to be inserted into the T-shaped slide groove provided on the translation pile, and a limit block is provided on the translation pile to limit its own moving range.

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

11. A safety milling machine for machining cylinder sleeves according to claim 10, characterized in that: The scraper includes a return spring piece, an arc scraper and a cross column. The concave rail column slides through a rectangular vertical hole opened on the cross column. The arc scraper slides through the flat plate hole opened on the cross column by arranging a flat plate. The return spring piece is connected between the arc scraper and the cross column. A row of convex teeth is arranged on the cross column to engage with the screw rod for transmission connection. One end of the concave hook column is stuck in a groove opened on the cross column, and the top of the cross column is provided with an inclined surface for the concave hook column to pass through.

12. The safety milling machine for machining cylinder sleeves according to claim 10, characterized in that: The spring group includes a flat support plate fixed on the unit frame, a pressure shaft movably sleeved in a circular hole opened in the flat support plate, an L-shaped fork frame sliding through a square hole opened in the flat support plate, a spring fixed at one end of the pressure shaft, and an outer moving ring of the outer fixed sleeve of the spring, the other end of the pressure shaft is meshed and connected to a row of teeth set at one end of the L-shaped fork frame through a fixed gear, the other end of the L-shaped fork frame is connected to a fixed column on the second cam through a plate groove, the outer moving ring includes an outer ring gear and a positioning plate fixed on the bottom surface of one side of the outer ring gear, the pressure shaft is also movably sleeved in a through hole opened in the middle of the outer moving ring positioning plate, and the end of the screw rod is meshed and connected to the outer ring gear of the outer moving ring through a fixed gear.

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