A drilling device for high-precision mold processing

Abstract

The present invention relates to the technical field of drilling equipment, and specifically proposes a drilling equipment for high-precision mold processing; it includes a drilling rig and a protective cover assembled on the main shaft end of the drilling rig; the protective cover includes a flange cylinder fixed on the main shaft box of the drilling rig, a suspension plate is vertically suspended on the flange cylinder, a cylindrical cover is detachably mounted on the bottom end of the suspension plate, the cylindrical cover is coaxially arranged with the main shaft of the drilling rig, and the main shaft is located in the cylindrical cover, and a collection bin is detachably mounted on the lower end of the cylindrical cover; the drilling equipment provided by the present invention collects and transfers cutting fluid and iron chips that can splash during drilling on the basis of meeting the isolation protection of drilling, thereby protecting the safety of the operator and improving the quality of the working environment.

Description

Technical Field

[0001] The invention relates to the technical field of drilling equipment, and specifically provides a drilling equipment for high-precision mold processing. Background Art

[0002] In the process of mold processing and manufacturing, drilling is an indispensable processing step to form structural holes such as fixing holes, avoidance holes, and ejector holes. Under the existing technology, whether it is semi-automatic drilling equipment or fully automatic drilling equipment, there is basically no corresponding protective structure at the drill end. Therefore, the following problems will exist in the actual drilling process.

[0003] 1) During the drilling process, the cutting fluid and metal fragments (iron chips) generated when the high-speed rotating tool contacts the workpiece will splash around. When the operator operates at close range, there is a risk of injury to the operator's eyes, skin and other parts.

[0004] 2) The random splashing and spreading of cutting fluid and iron chips not only affects the cleanliness of the workshop, reduces the comfort of the workshop environment, and affects the health of personnel, but also the splashing cutting fluid and iron chips may damage the surrounding mechanical equipment or electrical systems, increasing the probability of equipment failure.

[0005] 3) The random splashing of cutting fluid and iron chips not only makes it inconvenient to recover the cutting fluid and iron chips, but also increases the waste and loss of cutting fluid.

[0006] To sum up, it is of positive practical significance to carry out necessary protection during the drilling process of the mold. Summary of the invention

[0007] In order to solve the above problems, the present invention provides a drilling device for high-precision mold processing, which is used to solve the problems mentioned in the above background technology.

[0008] In order to achieve the above-mentioned purpose, the present invention adopts the following technical solutions: a drilling equipment for high-precision mold processing, including a drilling rig and a protective cover assembled on the main shaft end of the drilling rig; the protective cover includes a flange cylinder fixed on the main shaft box of the drilling rig, a suspension plate is vertically suspended on the flange cylinder, a cylindrical cover is detachably installed on the bottom end of the suspension plate, the cylindrical cover is coaxially arranged with the main shaft of the drilling rig, and the main shaft is located in the cylindrical cover, and a collection bin is detachably installed on the lower end of the cylindrical cover.

[0009] The collecting bin comprises an outer cylinder detachably docked and mounted at the lower end of the cylindrical cover and an inner cylinder coaxially arranged inside the outer cylinder, wherein the bottom ends of the outer cylinder and the inner cylinder are closed to form an annular groove; a plurality of magnet sheets distributed circumferentially around the central axis of the inner cylinder are fixed to the top end of the inner cylinder, wherein the plurality of magnet sheets form a bell mouth with a radius gradually increasing from bottom to top.

[0010] A cleaning drum that rotates around the main shaft of the drilling rig is rotatably installed at the bottom end of the flange cylinder. The cleaning drum vertically passes through the suspension plate and extends into the cylindrical cover. The cleaning drum includes a plurality of cleaning brushes distributed around the circumference of the main shaft. The plurality of cleaning brushes are located in a trumpet-shaped space surrounded by a plurality of the magnet sheets. The bottom end of the suspension plate is equipped with a linkage component for realizing linkage between the collection bin and the cleaning drum.

[0011] When the collecting bin, the cylindrical cover and the hanging plate rise synchronously, the magnet sheet contacts the cleaning brush, and the collecting bin drives the cleaning drum to rotate through the linkage component, so that the cleaning brush rotates and brushes the magnet sheet.

[0012] Preferably, the cleaning drum also includes a drum vertically passing through the suspension plate, the drum is rotatably mounted on the bottom end of the flange drum, a flange plate is fixed to the bottom end of the drum, and a plurality of cleaning brushes are commonly fixed to the bottom end of the flange plate.

[0013] Preferably, the suspension plate includes a plurality of limit guide rods vertically slidably mounted on the flange cylinder, a circular ring plate is horizontally fixed between the bottom ends of the plurality of limit guide rods, and the circular ring plate is sleeved and slidably mounted on the rotating drum; the collecting bin is detachably mounted on the circular ring plate.

[0014] Preferably, the linkage component includes a rack guide block fixed to the lower end surface of the ring disk, a rack is horizontally slidably installed on the rack guide block, a gear ring meshing with the rack is provided on the flange, a guide column is vertically fixed to the lower end surface of the ring disk, a sliding tube is slidably installed on the guide column, a return spring is sleeved on the guide column, two ends of the return spring are respectively fixed to the lower end surface of the ring disk and the top end of the sliding tube; a connecting rod is hinged on the sliding tube, and the other end of the connecting rod is hinged on the rack; a top contact ring contacting the bottom end of the sliding tube is provided on the top of the outer cylinder.

[0015] Preferably, a nozzle for spraying cutting fluid is fixedly passed horizontally between the outer cylinder and the inner cylinder, and the nozzle end of the nozzle is located inside the inner cylinder.

[0016] Preferably, an embedded ring is provided on the lower end surface of the annular disk, the cylindrical cover is sleeved on the embedded ring, and a plurality of positioning components cooperating with the embedded ring for positioning are circumferentially distributed on the cylindrical cover.

[0017] Preferably, the positioning assembly includes a positioning pin radially penetrating and slidably installed on the cylindrical cover, the positioning pin is sleeved with a tension spring, the two ends of the tension spring are respectively fixed to the outer wall of the cylindrical cover and the positioning pin, and the embedded ring is provided with a positioning hole for the positioning pin to be inserted.

[0018] Preferably, a plurality of heat dissipation holes are distributed around the circumference of the annular disk.

[0019] Preferably, a liquid outlet is provided on the outer cylinder, and the liquid outlet is arranged close to the bottom end of the outer cylinder.

[0020] Preferably, the cylindrical cover and the collecting bin are both made of transparent plastic.

[0021] The above technical scheme has the following advantages or beneficial effects: the present invention provides a drilling equipment for high-precision mold processing. On the basis of the existing drilling rig, a protective cover is installed at the drill bit end, which can form a relatively closed environment with the mold material during the drilling process, and realize protection and isolation of the drill bit, thereby avoiding the impact of splashing cutting fluid and iron chips on the operator's own safety and health during the drilling process, and reducing the damage to the cleanliness of the workshop environment, thereby improving the comfort of the working environment; in addition, an annular groove is arranged in the protective cover, which can also collect part of the splashing cutting fluid and iron chips in real time, and can timely export the collected cutting fluid, enhance the collection and capture of iron chips by magnetic attraction, and further clean the magnetically adsorbed iron chips during the descent and ascending process of drilling; in summary, the drilling equipment provided by the present invention collects and transfers the splashing cutting fluid and iron chips generated by drilling on the basis of meeting the isolation protection of drilling, thereby protecting the safety of the operator and improving the quality of the working environment. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] The present invention and its features, configurations and advantages will become more apparent by reading the detailed description of non-limiting embodiments with reference to the following drawings. The same reference numerals indicate the same parts throughout the drawings, which are not drawn to scale, with emphasis on illustrating the subject matter of the present invention.

[0023] Figure 1 It is a three-dimensional structural schematic diagram of a drilling device for high-precision mold processing provided by the present invention.

[0024] Figure 2 It is a front view of a drilling device for high-precision mold processing provided by the present invention.

[0025] Figure 3 yes Figure 2 Sectional view of AA.

[0026] Figure 4 It is a planar cross-sectional view of a drilling device for high-precision mold processing provided by the present invention.

[0027] Figure 5 It is a three-dimensional cross-sectional view of the protective cover.

[0028] Figure 6 It is a three-dimensional structural diagram of the assembly of the cleaning drum and the flange drum.

[0029] Figure 7 It is a three-dimensional structural diagram of the assembly of the suspension plate and linkage components.

[0030] Figure 8 It is a three-dimensional structural diagram of the collection bin.

[0031] In the figure: 1. drilling rig; 11. spindle box; 12. spindle; 13. drill bit; 2. flange cylinder; 3. suspension plate; 31. limit guide rod; 32. ring disk; 321. heat dissipation hole; 322. embedded ring; 323. positioning hole; 4. cylinder cover; 41. positioning assembly; 411. positioning pin; 412. tension spring; 5. collecting bin; 51. outer cylinder; 511. top contact ring; 512. liquid outlet; 52. inner cylinder; 53. magnet sheet; 54. nozzle; 6. cleaning drum; 61. drum; 62. flange; 621. gear ring; 63. cleaning brush; 631. nylon bristles; 7. linkage component; 71. rack guide block; 72. rack; 73. guide column; 74. sliding tube; 75. reset spring; 76. connecting rod. DETAILED DESCRIPTION

[0032] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0033] In order to enable those skilled in the art to better understand the scheme of the present invention, the present invention is further described in detail below in conjunction with the accompanying drawings and specific embodiments.

[0034] like Figure 1 , Figure 3 and Figure 4 As shown, a drilling device for high-precision mold processing includes a drill rig 1 and a protective cover installed on the spindle end; the drill rig 1 is any type or form of existing equipment for mold drilling. It should be noted that the accompanying drawings only show the spindle end of the drill rig 1, which includes a spindle box 11, on which a spindle 12 is installed, and a drill bit 13 is fixed to the spindle 12 through a spindle chuck.

[0035] It should be noted that, in this embodiment, Figure 2 , Figure 3 , Figure 4 , Figure 5 and Figure 7As shown, the part of the main shaft box 11 extending out of the main shaft 12 at the bottom end is a cylindrical structure; the protective cover includes a flange cylinder 2 fixed to the cylindrical structure of the main shaft box 11 of the drilling rig 1 by screws, and a suspension plate 3 is vertically suspended on the flange cylinder 2. The suspension plate 3 includes four limit guide rods 31 vertically slidably installed on the flange cylinder 2. The four limit guide rods 31 are evenly distributed around the circumference of the flange cylinder 2. The top of the limit guide rod 31 is provided with a protruding step, and the limit guide rod 31 is overlapped on the flange cylinder 2 through the step portion; a circular ring plate 32 is horizontally fixed between the bottom ends of the four limit guide rods 31 by screws, and the circular ring plate The lower end surface of the drill rig 1 is provided with an embedded ring 322, which is integrally formed on the annular disk 32; a cylindrical cover 4 is detachably mounted on the embedded ring 322, which is coaxially arranged with the main shaft 12 of the drilling rig 1, and the main shaft 12 is located in the cylindrical cover 4; a collecting bin 5 is detachably mounted on the lower end of the cylindrical cover 4; the drill bit 13 mounted on the main shaft 12 will be located in the cylindrical cover 4 and the collecting bin 5, and in order to ensure that the drill bit 13 is visible during drilling, therefore, in the present invention, the annular disk 32, the cylindrical cover 4 and the collecting bin 5 are all made of transparent plastic, for example, they can be made of organic glass. In addition, since a large amount of heat is generated during drilling, in order to facilitate heat dissipation, a plurality of heat dissipation holes 321 are evenly distributed on the circumference of the annular disk 32. In order to realize the rapid disassembly and assembly of the cylindrical cover 4, two positioning components 41 are circumferentially distributed on the cylindrical cover 4 and cooperate with the embedded ring 322 for positioning; the positioning component 41 includes a positioning pin 411 which is radially penetrated and slidably installed on the cylindrical cover 4, and a tension spring 412 is sleeved on the positioning pin 411. The two ends of the tension spring 412 are respectively fixed on the outer wall of the cylindrical cover 4 and the positioning pin 411. The positioning pin 411 can be made of stainless steel, so one end of the tension spring 412 can be directly welded to the positioning pin 411, and the other end of the tension spring 412 can be welded to the iron sheet, and the iron sheet is fixed to the outer wall of the cylindrical cover 4 by screws; the embedded ring 322 is provided with a positioning hole 323 for the positioning pin 411 to be inserted.

[0036] like Figure 3 , Figure 4 , Figure 5 and Figure 8As shown, the collecting bin 5 includes an outer cylinder 51 threadedly mounted in the cylinder cover 4 and an inner cylinder 52 coaxially arranged in the outer cylinder 51. The bottom ends of the outer cylinder 51 and the inner cylinder 52 are closed to form an annular groove, which serves as a collecting groove for collecting the cutting fluid and iron chips splashed during the drilling process. In order to be able to timely guide the cutting fluid collected in the annular groove, a liquid outlet 512 is provided on the outer cylinder 51, and the liquid outlet 512 is arranged near the bottom end of the outer cylinder 51. The end of the liquid outlet 512 can be connected to a hose, and the other end of the hose is connected to the cutting fluid recovery system. In addition, a filter can be set at one end of the hose connected to the liquid outlet 512 to filter the iron chips. A plurality of magnet sheets 53 distributed around the central axis are glued and fixed to the top of the inner cylinder 52. The magnet sheets 53 are magnetic and are used to magnetically absorb and capture flying iron filings to prevent them from falling directly into the inner cylinder 52. In order to facilitate the capture of iron filings and guide them to eventually fall into the annular groove, the plurality of magnet sheets 53 form a trumpet mouth with a radius that gradually increases from bottom to top.

[0037] like Figure 3 , Figure 5 and Figure 8 As shown, in the present invention, the nozzle 54 for cutting fluid injection is docked on the collecting bin 5, the nozzle 54 horizontally passes through between the outer cylinder 51 and the inner cylinder 52, and the nozzle end of the nozzle 54 is located in the inner cylinder 52. In this embodiment, the nozzle 54 is divided into two parts: a straight pipe section and an elbow nozzle. During assembly, the straight pipe section horizontally passes through the outer cylinder 51 and the inner cylinder 52, and the elbow nozzle extends into the inner cylinder 52 and is docked and installed on the straight pipe section. The outer end of the nozzle 54 is docked on the existing cutting fluid delivery system through a hose.

[0038] In order to make the iron filings adsorbed on the magnet sheet 53 fall further into the annular groove, Figure 3 , Figure 4 , Figure 5 and Figure 6 As shown, the bottom end of the flange cylinder 2 is equipped with a cleaning drum 6 that rotates around the main shaft 12 of the drilling rig 1, and the cleaning drum 6 includes a drum 61 mounted on the cylindrical structure of the main shaft box 11, and the drum 61 is rotatably installed at the bottom end of the flange cylinder 2, and the drum 61 vertically passes through the annular disk 32, and the annular disk 32 and the drum 61 are slidably matched, and a flange plate 62 is integrally formed at the bottom end of the drum 61, and a plurality of cleaning brushes 63 uniformly distributed around the center circumference thereof are glued and fixed to the bottom end of the flange plate 62, and the plurality of cleaning brushes 63 are located in a trumpet-shaped space surrounded by a plurality of magnet sheets 53; the brush layer of the cleaning brush 63 is nylon bristles 631, and in this embodiment, the angle of the entire layer of nylon bristles 631 relative to the main shaft 12 is the same as the angle of the magnet sheet 53 relative to the main shaft 12; the bottom end of the suspension plate 3 is equipped with a linkage component 7 for realizing linkage between the collecting bin 5 and the cleaning drum 6.

[0039] like Figure 3 , Figure 4 and Figure 7 As shown, the linkage component 7 includes a rack guide block 71 fixed to the lower end surface of the annular disk 32 by screws, a rack 72 is horizontally slidably installed on the rack guide block 71, a gear ring 621 meshing with the rack 72 is integrally formed on the flange 62, a guide column 73 is vertically fixed to the lower end surface of the annular disk 32 by screws, a sliding tube 74 is slidably installed on the guide column 73, a return spring 75 is sleeved on the guide column 73, and the two ends of the return spring 75 are respectively fixed to the lower end surface of the annular disk 32 and the top end of the sliding tube 74. Since the annular disk 32 is made of plastic, the installation and fixing method of the return spring 75 is the same as that of the tension spring 412, which will not be repeated here; a connecting rod 76 is hinged on the sliding tube 74, and the other end of the connecting rod 76 is hinged on the rack 72; the top end of the outer cylinder 51 is integrally formed with a top contact ring 511 that contacts the bottom end of the sliding tube 74.

[0040] In the present invention, the protective cover adopts a multi-stage detachable structure. When the drill bit 13 needs to be replaced or installed, the two positioning pins 411 can be pulled out from the positioning hole 323, so that the cylindrical cover 4 and the collecting bin 5 can be removed as a whole, and the drill bit 13 can be installed; during the continuous drilling process, when a large amount of iron filings accumulate in the annular groove of the collecting bin 5, the collecting bin 5 can be rotated and unscrewed from the cylindrical cover 4, and then the collecting bin 5 can be inverted to dump and clean the iron filings.

[0041] During the actual drilling process, the bottom of the collecting bin 5 needs to naturally touch the mold material. In order to ensure that the bottom of the collecting bin 5 can keep in contact with the mold material to maintain a relatively closed state, the protective cover involved in the present invention is mainly used for drilling large flat mold plates such as upper templates and lower templates. The actual drilling is specifically described as follows.

[0042] When drilling, the drilling machine 1 drives the drill bit 13 to move to the top of the predetermined drilling position of the mold plate, and then the protective cover and the drill bit 13 descend synchronously. During the descent, the bottom end of the collecting bin 5 first contacts the mold plate surface, and under the guidance of the limiting guide rod 31 and the flange cylinder 2, the collecting bin 5, the cylindrical cover 4 and the annular disk 32 passively rise as a whole, and the drill bit 13 extends downward relative to the inner cylinder 52, and completes the drilling as it descends. During the drilling process, the cutting fluid and the iron filings generated by the drilling will splash, and part of the splashed cutting fluid will pass through the gaps between the magnet sheets 53 and fall directly into the annular groove, while the splashed iron filings will be adsorbed on the magnet sheets 53 under the sound absorption of the magnetic force (part of the iron filings pass through the gaps between the magnet sheets 53 and enter the annular groove), and touch the mold plate through the bottom end of the collecting bin 5. The protective cover constitutes a relatively closed drilling space for the drill bit 13, which effectively The invention avoids the influence of splashing cutting fluid and iron chips on human operation safety and the surrounding workshop environment, and can effectively collect the splashing cutting fluid and iron chips. It should be noted that it is inevitable that some cutting fluid and iron chips will fall into the inner cylinder 52 and eventually remain on the mold plate; when the collecting bin 5 passively rises, the magnet sheet 53 will gradually contact the nylon bristles 631 of the cleaning brush 63, and the cleaning drum 6 will drop synchronously with the drill bit 13, so that the top contact ring 511 will push the sliding tube 74 upward, the reset spring 75 will be gradually compressed, and the connecting rod 76 will drive the rack 72 to slide along the rack guide block 71, and drive the gear ring 621 to make the cleaning drum 6 rotate as a whole, so that the nylon bristles 631 keep in contact with the magnet sheet 53, and the magnet sheet 53 is rotated and cleaned, so that the stripped iron chips will fall into the annular groove.

[0043] When the drill bit 13 completes drilling and gradually rises, the collecting bin 5 first remains on the mold plate, and the cleaning drum 6 rises synchronously with the drill bit 13, the reset spring 75 is gradually released, and the sliding tube 74 pulls the rack 72 to slide through the connecting rod 76, thereby causing the cleaning drum 6 to rotate in the opposite direction, so that the cleaning brush 63 has a further rotational cleaning effect on the magnet sheet 53.

[0044] After a period of drilling is completed, the collecting bin 5 can be removed and the iron filings can be dumped and cleaned.

[0045] In summary, the present invention provides a drilling device for high-precision mold processing. On the basis of the existing drilling rig 1, a protective cover is installed at the end of the drill bit 13, which can form a relatively closed environment with the mold material during the drilling process, and realize protection and isolation of the drill bit 13, thereby avoiding the impact of splashing cutting fluid and iron chips on the operator's own safety and health during the drilling process, and reducing the damage to the cleanliness of the workshop environment, thereby improving the comfort of the working environment; in addition, an annular groove is arranged in the protective cover, which can also collect part of the splashing cutting fluid and iron chips in real time, and can timely export the collected cutting fluid, enhance the collection and capture of iron chips by magnetic attraction, and further clean the magnetically adsorbed iron chips during the descent and ascending process of drilling; in summary, the drilling equipment provided by the present invention collects and transfers the splashing cutting fluid and iron chips generated by drilling on the basis of meeting the isolation protection of drilling, thereby protecting the safety of the operator and improving the quality of the working environment.

[0046] In the description of the present invention, it is to be understood that the terms “center”, “longitudinal”, “lateral”, “length”, “width”, “thickness”, “up”, “down”, “vertical”, “horizontal”, “top”, “bottom”, “inside”, “outside”, “clockwise”, “counterclockwise”, “axial”, “radial”, “circumferential”, etc., indicating orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.

[0047] In the description of the present invention, it is also necessary to explain that, unless otherwise clearly specified and limited, the terms "set", "connect", "install", and "connect" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood by specific circumstances.

[0048] The above describes the preferred embodiments of the present invention. It should be understood that the present invention is not limited to the above-mentioned specific embodiments, and the devices and structures that are not described in detail should be understood to be implemented in a common manner in the art; any technician familiar with the art can make many possible changes and modifications without departing from the technical solution of the present invention, or modify them into equivalent embodiments with equivalent changes, which does not affect the essential content of the present invention. Therefore, any simple modifications, equivalent changes and modifications made to the above embodiments based on the technical essence of the present invention without departing from the content of the technical solution of the present invention are still within the scope of protection of the technical solution of the present invention.

Claims

1. A drilling device for high-precision mold processing, comprising a drilling machine (1) and a protective cover mounted on the main shaft end of the drilling machine (1); characterized in that: The protective cover comprises a flange cylinder (2) fixed on a main shaft box (11) of a drilling machine (1), a suspension plate (3) being vertically suspended on the flange cylinder (2), a cylindrical cover (4) being detachably mounted on the bottom end of the suspension plate (3), the cylindrical cover (4) being coaxially arranged with a main shaft (12) of the drilling machine (1), and the main shaft (12) being located inside the cylindrical cover (4), and a collecting bin (5) being detachably mounted on the lower end of the cylindrical cover (4); wherein: The collecting bin (5) comprises an outer cylinder (51) detachably mounted on the lower end of the cylindrical cover (4) and an inner cylinder (52) coaxially arranged inside the outer cylinder (51), wherein the bottom ends of the outer cylinder (51) and the inner cylinder (52) are closed to form an annular groove; a plurality of magnet sheets (53) distributed circumferentially around the central axis of the inner cylinder (52) are fixed to the top end of the inner cylinder (52), and the plurality of magnet sheets (53) form a bell mouth with a radius gradually increasing from bottom to top; A cleaning drum (6) is rotatably mounted at the bottom end of the flange cylinder (2) and rotates around the main shaft (12) of the drilling rig (1). The cleaning drum (6) vertically passes through the suspension plate (3) and extends into the cylindrical cover (4). The cleaning drum (6) includes a plurality of cleaning brushes (63) distributed around the circumference of the main shaft (12). The plurality of cleaning brushes (63) are located in a bell-mouth space surrounded by the plurality of magnet sheets (53). A linkage component (7) is mounted at the bottom end of the suspension plate (3) for realizing linkage between the collection bin (5) and the cleaning drum (6). When the collecting bin (5) rises synchronously with the cylindrical cover (4) and the hanging plate (3), the magnet sheet (53) contacts the cleaning brush (63), and the collecting bin (5) drives the cleaning drum (6) to rotate through the linkage component (7), so that the cleaning brush (63) rotates and brushes the magnet sheet (53); The cleaning drum (6) further comprises a drum (61) vertically passing through the suspension plate (3), the drum (61) being rotatably mounted on the bottom end of the flange drum (2), a flange plate (62) being fixed to the bottom end of the drum (61), and a plurality of cleaning brushes (63) being fixed together on the bottom end of the flange plate (62); The suspension plate (3) includes a plurality of limit guide rods (31) vertically slidably mounted on the flange cylinder (2); a circular ring plate (32) is horizontally fixed between the bottom ends of the plurality of limit guide rods (31); the circular ring plate (32) is sleeved and slidably mounted on the rotating cylinder (61); the collecting bin (5) is detachably mounted on the circular ring plate (32); The linkage component (7) comprises a rack guide block (71) fixed on the lower end surface of the annular disk (32), a rack (72) being horizontally slidably mounted on the rack guide block (71), a gear ring (621) meshing with the rack (72) being arranged on the flange (62), a guide column (73) being vertically fixed on the lower end surface of the annular disk (32), a sliding tube (74) being slidably mounted on the guide column (73), a return spring (75) being sleeved on the guide column (73), two ends of the return spring (75) being respectively fixed on the lower end surface of the annular disk (32) and the top end of the sliding tube (74); a connecting rod (76) being hinged on the sliding tube (74), the other end of the connecting rod (76) being hinged on the rack (72); and a top contact ring (511) contacting the bottom end of the sliding tube (74) being arranged at the top end of the outer cylinder (51).

2. The high-precision mold processing drilling equipment according to claim 1, characterized in that: A nozzle (54) for spraying cutting fluid is fixedly and horizontally passed through the outer cylinder (51) and the inner cylinder (52), and a nozzle end of the nozzle (54) is located inside the inner cylinder (52).

3. The high-precision mold processing drilling equipment according to claim 1, characterized in that: The lower end surface of the annular disk (32) is provided with an embedded ring (322), the cylindrical cover (4) is sleeved on the embedded ring (322), and a plurality of positioning components (41) are circumferentially distributed on the cylindrical cover (4) and cooperate with the embedded ring (322) for positioning.

4. The high-precision mold processing drilling equipment according to claim 3 is characterized in that: The positioning assembly (41) comprises a positioning pin (411) radially penetrating and slidably installed on the cylindrical cover (4); a tension spring (412) is sleeved on the positioning pin (411); two ends of the tension spring (412) are respectively fixed to the outer wall of the cylindrical cover (4) and the positioning pin (411); and a positioning hole (323) for inserting the positioning pin (411) is provided on the embedded ring (322).

5. The high-precision mold processing drilling equipment according to claim 1, characterized in that: The annular disk (32) is provided with a plurality of heat dissipation holes (321) distributed around its circumference.

6. The high-precision mold processing drilling equipment according to claim 1, characterized in that: The outer cylinder (51) is provided with a liquid outlet (512), and the liquid outlet (512) is arranged close to the bottom end of the outer cylinder (51).

7. The high-precision mold processing drilling equipment according to claim 1, characterized in that: The cylindrical cover (4) and the collecting bin (5) are both made of transparent plastic.

Images