Mould machining reaming device and reaming method

Abstract

The invention discloses a die machining broaching device and broaching method, and belongs to the technical field of die machining. The die machining broaching device comprises a workbench, a first notch is formed in the side face of the workbench, a broaching drill is fixedly installed in a drill chuck, an overturning and adjusting assembly is arranged in the first notch, and a bottom removing assembly is arranged at the bottom of the first notch; an auxiliary discharging assembly is arranged between the bottom removing assembly and the overturning and adjusting assembly, and a clamping and pressing assembly is arranged at the bottom end of the mounting plate; the die plate can be turned over through the turning and adjusting assembly, and bidirectional reaming machining is carried out; cold air flow is evenly and finely blown out to the single side face after reaming through the bottom removing assembly, so that chippings are efficiently removed, meanwhile, cooling and heat dissipation are conducted on the die plate in the reaming process, after reaming machining of the die plate is completed, the arranged overturning and adjusting assembly rotates to a certain angle, an opening is made to be inclined downwards, and therefore the die plate is prevented from being damaged. And part of air flow in the bottom removing assembly is converted into one end blowing the mold plate through the auxiliary discharging assembly, so that the mold plate is rapidly taken out.

Description

Technical Field

[0001] This invention relates to the field of mold processing technology, and in particular to a mold processing hole enlargement device and hole enlargement method. Background Technology

[0002] In the field of mold manufacturing technology, mold plates, as the core forming components of various injection, die casting, and stamping molds, are usually made of mold steel and have excellent wear resistance, heat resistance, and dimensional stability. They often need to be machined with a relatively deep hole structure inside to meet functional requirements such as cooling channels, ejector pin channels, or guiding and positioning. However, the initial drilled holes reserved on the mold plate usually cannot directly meet the final use requirements. Therefore, the hole enlargement process, by precisely enlarging and trimming the pre-drilled holes, effectively corrects the straightness of the channels, improves dimensional accuracy, and obtains a smooth surface. It is an indispensable finishing process to ensure that the mold achieves the design performance.

[0003] When enlarging deep holes on mold plates, existing technologies partially employ a double-sided enlarging method to improve hole shape accuracy. This involves processing the same hole from both sides of the mold plate in segments to reduce the single cutting load and minimize burrs at the exit end. However, several problems remain in practical applications. First, after enlarging one side, the mold plate must be removed from the worktable and manually flipped and repositioned, significantly reducing overall processing efficiency. Second, after the initial enlarging, residual metal debris and coolant on the hole wall and opening are difficult to remove effectively. These debris can be squeezed into the machined surface during the second enlarging process, causing scratches or loss of accuracy and affecting the enlarging quality. Therefore, designing a dedicated enlarging device that integrates automatic flipping, efficient chip removal, and process cooling is crucial for improving the quality and efficiency of mold plate enlarging.

[0004] Therefore, it is necessary to provide a hole-expanding device and method for mold processing to solve the above-mentioned technical problems. Summary of the Invention

[0005] The purpose of this invention is to provide a hole-expanding device and method for mold processing, so as to solve the problems mentioned in the background art.

[0006] To achieve the above objectives, the present invention provides the following solution to the above technical problems: a mold processing hole enlargement device, comprising a worktable, a first slot being provided on the side of the worktable, a flipping and adjusting component being provided in the first slot for flipping and enlarging a mold plate in both directions, a bottom removal component being provided at the bottom of the first slot for blowing away debris on the mold plate while cooling the hole enlargement process, and an auxiliary removal component being provided between the bottom removal component and the flipping and adjusting component for assisting in removing the mold plate.

[0007] As a further embodiment of the present invention, the flipping assembly includes an inner frame plate disposed inside the first slot and capable of being flipped. One flipping end of the inner frame plate is open, and a plurality of permanent magnet blocks distributed at equal intervals are fixed inside the other flipping end of the inner frame plate. Second slots are provided on both the upper and lower sides of the inner frame plate. A shaft is fixed at both ends of the inner frame plate and rotatably passes through the side wall of the first slot. The two shafts are arranged coaxially. A servo motor is fixed on the side of the worktable, and the output end of the servo motor is fixed to one of the shafts.

[0008] As a further embodiment of the present invention, a plurality of equidistantly distributed ball bearings are rolled on the inner sidewalls of both sides of the inner frame plate, and a guide slope is provided at the opening end of the inner frame plate.

[0009] As a further embodiment of the present invention, the bottom removal component includes a wind plate disposed directly below the first slot. The wind plate is fixed to the workbench by a support rod. A first inner cavity is opened inside the wind plate, and an air inlet pipe is connected to the first inner cavity. A blowing hole is opened on the top surface of the wind plate, which is connected to the first inner cavity. Multiple blowing holes are provided and the multiple blowing holes are equidistantly distributed.

[0010] As a further embodiment of the present invention, the auxiliary component includes a second inner cavity opened in the workbench, and an air supply pipe is connected between the second inner cavity and the first inner cavity. A plurality of air outlets connected to the second inner cavity are opened on the side of the first slot.

[0011] As a further embodiment of the present invention, the air outlet is arranged at an angle, and multiple through slots are provided on the side of the inner frame plate. When the inner frame plate is tilted and the material is poured, the air outlet and the through slots are tilted and aligned.

[0012] As a further embodiment of the present invention, a rubber strip located on one side of the through groove is attached and fixed to the side of the inner frame plate, and a third inner cavity is formed inside the rubber strip.

[0013] As a further embodiment of the present invention, one of the shafts is fixed with a protruding plate at one end, and a locking bolt is threadedly connected to the protruding plate. The side of the worktable is provided with a threaded hole that is adapted to the thread of the locking bolt. There are two threaded holes, and the two threaded holes are horizontally symmetrically distributed about the central axis of the shaft.

[0014] As a further embodiment of the present invention, a movable mounting plate is provided directly above the first slot. Two sets of clamping assemblies are symmetrically distributed at the bottom end of the mounting plate. Each clamping assembly includes an outer cylinder fixed to the bottom surface of the mounting plate. An inner sliding rod is slidably connected inside the outer cylinder. A rigid spring is provided inside the outer cylinder. The two ends of the rigid spring are respectively fixed to the end face of the inner sliding rod and the bottom surface of the mounting plate. A pressure plate is fixed to the bottom end of the inner sliding rod. A rubber pad is attached and fixed to the side of the bottom end of the pressure plate.

[0015] A method for enlarging a hole using a die-processing device includes the following steps: S1. By rotating the opening of the inner frame plate to tilt upwards, the mold plate to be enlarged can be placed inside the inner frame plate through the opening of the inner frame plate. At this time, the four sides of the mold plate are in close contact with the inner sidewall of the inner frame plate, and one end of the steel mold plate is attracted and fixed by the set permanent magnet block. Thus, the mold plate is positioned by the combination of the internal space of the inner frame plate and the attraction of the permanent magnet block. S2. After placing the mold plate, rotate the inner frame plate to move the mold plate horizontally. At this time, the reamer is aligned with the hole on the horizontally placed mold plate. S3. During the reaming process, after the hole is reamed to a certain extent on one side, the mounting plate and the reaming drill at its bottom are reset and moved to a higher position. The reaming drill is withdrawn from the hole. The mold plate can be automatically flipped 180 degrees by the rotatable and adjustable inner frame plate, so that the reaming drill can continue to ream the hole from the other end of the hole, thus performing bidirectional reaming of the hole on the mold plate. S4. Air with a certain air pressure is delivered to the inside of the air plate through the air inlet pipe and blown out evenly through multiple air blowing holes. The inner frame plate drives the two sides of the mold plate to repeatedly flip and switch, so that both sides of the mold plate are cleaned by the air blowing from the air blowing holes. The cold air is blown out evenly to one side of the mold plate after it is flipped down and expanded through multiple air blowing holes, thereby efficiently removing metal debris and coolant residues adhering to the hole wall, hole opening and mold plate surface, while cooling the mold plate during the hole expansion process. S5. After the die plate is enlarged, the inner frame plate is rotated to a certain angle so that the opening of the inner frame plate is tilted downward. At this time, the through groove on the end of the inner frame plate away from the opening is aligned with the air outlet. The airflow inside the first inner cavity is transported to the second inner cavity through the air supply pipe and blown out to one end of the die plate through multiple air outlets. Thus, the die plate overcomes the attraction force of the permanent magnet block under the action of its own weight and the airflow. As a result, the die plate slides out from the inner frame plate, and the die plate with enlarged hole is quickly taken out.

[0016] Compared with the prior art, the beneficial effects of the present invention are: 1. The mold plate can be automatically flipped 180 degrees by the flipping component, making the flipping operation more convenient and efficient, eliminating the need for a second manual flipping and repeated clamping, greatly improving the overall hole enlargement efficiency. This allows the reamer to continue enlarging the hole from the other end of the hole, performing bidirectional hole enlargement on the mold plate. Bidirectional hole enlargement effectively improves the hole enlargement accuracy and shape accuracy, while effectively reducing material tearing and burrs commonly seen on the exit face during single-sided penetration. Furthermore, it reduces the chip load and heat accumulation in a single process, which not only reduces the risk of drill bit wear failure due to long-term continuous cutting and extends the drill bit's service life, but also reduces thermal deformation of the mold plate and drill bit caused by heat concentration, ensuring the dimensional stability of the mold plate. 2. After the mold plate is flipped over, the set bottom removal component blows the cold air evenly and finely onto the single side after the hole is enlarged, thereby efficiently removing metal debris and coolant residue adhering to the hole wall, hole opening and mold plate surface. This reduces the risk of scratching the hole wall due to the residual debris being squeezed and ground during the subsequent hole enlargement process. At the same time, it cools and dissipates heat from the mold plate during the hole enlargement process, accelerating the dissipation of heat accumulated in the first half of the cutting process. This not only creates more stable temperature and more uniform stress distribution processing conditions for the second hole enlargement, further reducing the micro-errors in hole diameter caused by local thermal deformation, but also provides a guarantee for the operator's safe removal of parts by reducing the overall temperature of the mold plate. 3. The mold plate is cleaned by blowing cold air from the bottom, so that all the blown debris, oil and other impurities will naturally sink downward and be confined to the special chip collection area at the bottom of the worktable. This prevents the blown impurities from re-adhering to the surface of the workpiece and avoids the problem of debris flying everywhere and easily contaminating the worktable surface when traditional top blowing is used. This effectively reduces the frequency and workload of cleaning the worktable surface. 4. After the enlargement of the mold plate is completed, the set tilting component is rotated to a certain angle, so that the opening of the tilting component is tilted downward. The set auxiliary component converts part of the airflow inside the bottom removal component into blowing one end of the mold plate. Under the dual action of the mold plate's own weight and the auxiliary pushing of the airflow blown out by the auxiliary component, the mold plate automatically slides out from inside the tilting component, thereby quickly removing the mold plate after the enlargement is completed, effectively improving the convenience of material removal and improving the removal efficiency. Attached Figure Description

[0017] The present invention will be further described below with reference to the accompanying drawings and embodiments: Figure 1 The overall three-dimensional structure of the present invention Figure 1 ; Figure 2 The overall three-dimensional structure of the present invention Figure 2 ; Figure 3 This is a schematic diagram of the internal structure of the first slot of the present invention; Figure 4 This is a schematic diagram of the bottom structure of the workbench of the present invention; Figure 5 This is a partial structural diagram of the adjustment component of the present invention; Figure 6 This is a partial structural diagram of the auxiliary component of the present invention; Figure 7 This is a cross-sectional view of the auxiliary component of the present invention; Figure 8 This is a schematic cross-sectional view of the bottom removal component of the present invention; Figure 9 for Figure 7 Enlarged view of the structure at point A in the middle; Figure 10 This is a cross-sectional view of the clamping assembly of the present invention; Figure 11 This is a schematic diagram of the air outlet and threaded hole structure of the present invention.

[0018] The attached diagram lists the components represented by each number as follows: 1. Flip-up assembly; 101. Inner frame plate; 102. Second slot; 103. Shaft; 104. Protruding plate; 105. Locking bolt; 106. Ball bearing; 107. Guide slope; 108. Permanent magnet block; 109. Servo motor; 110. Threaded hole; 2. Bottom removal assembly; 201. Air vane; 202. First inner cavity; 203. Air blowing hole; 204. Air inlet pipe; 205. Support rod; 3. Auxiliary discharge assembly; 301. Output 302. Air tube; 303. Second inner cavity; 304. Air outlet; 305. Rubber strip; 306. Third inner cavity; 307. Through groove; 4. Clamping assembly; 401. Outer cylinder; 402. Inner slide rod; 403. Hard spring; 404. Pressure plate; 405. Rubber pad; 5. Worktable; 6. Support plate; 7. Hydraulic push rod; 8. Mounting plate; 9. Drill base; 10. Reamer; 11. First slot; 12. Base frame; 13. Electric slide table. Detailed Implementation

[0019] The present invention will be further described below with reference to embodiments.

[0020] Please see Figure 1-11This invention provides a mold processing reaming device, including a worktable 5. A first slot 11 is formed on the side of the worktable 5. A support plate 6 is fixed to the top side of the worktable 5. A hydraulic push rod 7 is fixed to the top of the support plate 6. A mounting plate 8 located directly above the first slot 11 is fixed to the output end of the hydraulic push rod 7. An electric slide 13 is mounted on the bottom of the mounting plate 8. The electric slide 13 is connected to an external power source via a control switch. A drill base 9 is mounted on the electric slide 13. The position of the drill base 9 can be adjusted by driving the electric slide 13. The specific structure and working principle of the electric slide 13 have been fully explained in the prior art. In this application... Without further elaboration, a drill chuck is rotatably connected to the bottom of the drill base 9, and a reaming drill 10 for enlarging holes is fixedly installed inside the drill chuck. A small motor that drives the reaming drill 10 to rotate at high speed is installed inside the drill base 9. A base frame 12 is fixed to the bottom of the worktable 5. A flipping and adjusting component 1 for flipping the mold plate and enlarging holes in both directions is provided in the first slot 11. A bottom removal component 2 for blowing away debris on the mold plate and cooling the hole enlarging process is provided at the bottom of the first slot 11. An auxiliary removal component 3 for assisting in removing the mold plate is provided between the bottom removal component 2 and the flipping and adjusting component 1. Two sets of clamping components 4 are symmetrically distributed at the bottom of the mounting plate 8. When enlarging deep holes on a mold plate, the mold plate to be enlarged is placed inside the tilting assembly 1 by rotating the opening of the tilting assembly 1 upwards. The mold plate is then fixed inside the tilting assembly 1 by adsorption, and the space inside the tilting assembly 1 limits its position. The tilting assembly 1 drives the mold plate to rotate and adjust, positioning it horizontally. At this point, the reaming drill 10 is aligned with the hole on the horizontally positioned mold plate. The hydraulic push rod 7 is then activated to begin operation. The output end drives the mounting plate 8 to move downwards, thereby driving the high-speed rotating reamer 10 at the bottom of the mounting plate 8 to enlarge the hole on the mold plate. Simultaneously, a coolant spray nozzle is provided on one side of the reamer 10, continuously spraying coolant onto the cutting area for lubrication and heat dissipation. During the reaming process, after enlarging a portion of the hole on one side, the hydraulic push rod 7 drives the mounting plate 8 and the reamer 10 at its bottom to reset and move upwards to a higher position. The reamer 10 then retracts from the hole, and the adjustable component 1 can be used to... The mold plate is automatically flipped 180 degrees, allowing the reamer 10 to continue reaming from the other end of the hole, thus performing bidirectional reaming on the hole on the mold plate. The mold plate flipping operation is more convenient and efficient, eliminating the need for a second manual flipping and repeated clamping, greatly improving the overall reaming efficiency. Bidirectional reaming effectively improves the continuity and uniformity of the cutting texture on the hole wall of the deep hole, greatly reducing the slight axial deviation, spiral marks or vibration marks on the hole wall that are easily caused by unidirectional processing. This significantly improves the coaxiality and straightness of the hole, and improves the reaming accuracy and shape accuracy. At the same time, it effectively reduces the material tearing and burrs that are common on the exit face when penetrating from one side, so that both ends of the hole can obtain a flat and smooth processing surface, greatly improving the final forming quality of the hole. Furthermore, it reduces the chip load and heat accumulation of a single processing, which not only reduces the risk of drill bit wear failure caused by long-term continuous cutting and extends the service life of the drill bit, but also reduces the thermal deformation of the mold plate and drill bit caused by heat concentration, ensuring the dimensional stability of the mold plate. After the mold plate is flipped over, the bottom removal component 2 evenly and finely blows cold air onto the single side after hole enlargement, effectively removing microscopic metal debris and coolant residue adhering to the hole wall, hole opening, and mold plate surface. This reduces the risk of scratching the hole wall due to residual debris being squeezed and ground during subsequent hole enlargement. Simultaneously, it cools the mold plate during hole enlargement, accelerating the dissipation of heat accumulated during the first half of the cutting process. This not only creates more stable temperature and more uniform stress distribution processing conditions for the second hole enlargement, further reducing microscopic errors in hole diameter caused by localized thermal deformation, but also ensures safe part removal for operators by lowering the overall temperature of the mold plate. Furthermore, the cold airflow sweeps clean the bottom of the mold plate, removing all blown-off debris, oil, and other impurities. The debris then sinks downwards and is eventually confined to the dedicated chip collection area at the bottom of the worktable 5, preventing the blown-off impurities from re-adhering to the workpiece surface. This avoids the problem of debris flying everywhere and easily contaminating the worktable surface during traditional top blowing, effectively reducing the frequency and workload of cleaning the worktable surface. After the mold plate is enlarged, the set tilting component 1 is rotated to a certain angle, causing the opening of the tilting component 1 to tilt downwards. The set auxiliary component 3 converts part of the airflow inside the bottom removal component 2 into blowing one end of the mold plate. Under the dual action of the mold plate's own weight and the auxiliary pushing of the airflow blown out by the auxiliary component 3, the mold plate automatically slides out from inside the tilting component 1, thereby quickly removing the mold plate after the enlarged hole is processed, effectively improving the convenience of material removal and increasing the removal efficiency.

[0021] Further as Figure 2 , Figure 3 , Figure 5 and Figure 6As shown, it is worth noting that the flipping assembly 1 includes an inner frame plate 101 that is rotatable and disposed inside the first slot 11. One flipping end of the inner frame plate 101 is open, and multiple equidistant permanent magnet blocks 108 are fixed inside the other flipping end of the inner frame plate 101. Second slots 102 are provided on both the upper and lower sides of the inner frame plate 101. Shafts 103 that rotate through the sidewall of the first slot 11 are fixed at both ends of the inner frame plate 101. The two shafts 103 are arranged coaxially. A servo motor 109 is fixed on the side of the worktable 5, and the output end of the servo motor 109 is fixed to one of the shafts 103. The inner frame plate 101 is rotated and adjusted by the output end of the servo motor 109. By rotating the opening of the inner frame plate 101 to tilt upward, the mold plate to be enlarged can be placed inside the inner frame plate 101 through the opening. At this time, the four sides of the mold plate are flush with the inner frame. The inner wall of plate 101 is in close contact with the mold plate, and one end of the steel mold plate is attracted and fixed by the permanent magnet block 108. The mold plate is completely positioned by the internal space of the inner frame plate 101 and the attraction of the permanent magnet block 108. When the mold plate is horizontally placed, the reaming drill 10 is aligned with the hole on the horizontally placed mold plate. The mold plate can be flipped 180 degrees by the inner frame plate 101, making the flipping operation more convenient and efficient, eliminating the need for a second manual flipping and repeated clamping, and greatly improving the overall hole reaming efficiency. The flipping operation allows the reaming drill 10 to ream the hole from both ends. Bidirectional hole reaming effectively improves the continuity and uniformity of the cutting texture of the hole wall in deep holes, greatly reducing the slight axial deviation, spiral marks or vibration marks on the hole wall that are easily generated by unidirectional processing. This significantly improves the coaxiality and straightness of the hole, and improves the hole reaming accuracy and shape accuracy.

[0022] Further as Figure 1 , Figure 3 , Figure 4 , Figure 7 and Figure 8As shown, it is worth noting that the bottom removal component 2 includes a wind plate 201 located directly below the first slot 11. The wind plate 201 is fixed to the workbench 5 by a support rod 205. The wind plate 201 has a first inner cavity 202, which is connected to an air inlet pipe 204. The top surface of the wind plate 201 has multiple air blowing holes 203 that are equidistant from the first inner cavity 202. An air inlet pipe 204 is connected to an air pump, which delivers air with a certain pressure to the inside of the wind plate 201 and blows it out evenly through the multiple air blowing holes 203. The inner frame plate 101 drives the two sides of the mold plate. The mold plate is repeatedly flipped and switched so that both sides of the mold plate are cleaned by the airflow from the air blowing holes 203. The cold airflow is evenly blown out through multiple air blowing holes 203 onto the side of the mold plate after it is flipped and expanded, thereby efficiently removing metal debris and coolant residues adhering to the hole wall, hole opening and mold plate surface. At the same time, the mold plate is cooled and dissipated during the hole expansion process, accelerating the dissipation of heat accumulated in the first half of the cutting process. This not only creates more stable temperature and more uniform stress distribution processing conditions for the second hole expansion, further reducing the micro-error of hole diameter caused by local thermal deformation, but also provides a guarantee for the operator's safe removal of parts by reducing the overall temperature of the mold plate.

[0023] Further as Figure 1 , Figure 5 , Figure 7 , Figure 9 and Figure 11 As shown, it is worth noting that the auxiliary assembly 3 includes a second inner cavity 302 opened within the workbench 5. An air supply pipe 301 connects the second inner cavity 302 and the first inner cavity 202. Multiple air outlets 303, communicating with the second inner cavity 302, are opened on the side of the first slot 11. The air outlets 303 are arranged at an angle, and multiple through slots 306 are opened on the side of the inner frame plate 101. When the inner frame plate 101 is tilted for material pouring, the air outlets 303 and through slots 306 are tilted and aligned. When the opening of the inner frame plate 101 is tilted downwards, the mold... When the plate is automatically discharged, the through groove 306 on the end of the inner frame plate 101 away from the opening is aligned with the air outlet 303. The airflow inside the first inner cavity 202 is transported to the second inner cavity 302 through the air supply pipe 301 and blown out to one end of the mold plate through multiple air outlets 303. This helps to push the mold plate to overcome the attraction force of the permanent magnet block 108, so that the mold plate slides out from the inner frame plate 101. This allows the mold plate with the enlarged hole to be quickly removed, effectively improving the removal efficiency and enabling the mold plate to have both stable adsorption positioning and convenient removal functions.

[0024] Further as Figure 5 , Figure 6 and Figure 9As shown, it is worth noting that a rubber strip 304 located on one side of the through groove 306 is attached and fixed to the side of the inner frame plate 101. The rubber strip 304 has a third inner cavity 305. When the inner frame plate 101 is horizontally positioned, the side wall of the rubber strip 304 presses against and blocks the air outlet 303, thereby sealing the air outlet 303 through the rubber strip 304. This allows the gas to be concentrated and blown out through the air blowing hole 203 to the side of the mold plate, improving the cleaning and cooling effect. When the mold plate with the enlarged hole needs to be removed, the opening of the inner frame plate 101 rotates and tilts downward. At this time, the rubber strip 304 disengages from the air outlet 303, thereby automatically opening the air outlet 303. The airflow blown out through the air outlet 303 assists in pushing the mold plate to slide out automatically from the inner frame plate 101.

[0025] Further as Figure 1 , Figure 2 and Figure 10 As shown, it is worth noting that the clamping assembly 4 includes an outer cylinder 401 fixed to the bottom surface of the mounting plate 8. An inner slide rod 402 is slidably connected inside the outer cylinder 401. A rigid spring 403 is installed inside the outer cylinder 401. The two ends of the rigid spring 403 are fixed to the end face of the inner slide rod 402 and the bottom surface of the mounting plate 8, respectively. A pressure plate 404 is fixed to the bottom end of the inner slide rod 402. A rubber pad 405 is attached to the side of the bottom end of the pressure plate 404. When the mounting plate 8 moves downward, the pressure plate 404 first... The outer cylinder 401, inner slide bar 402, and hard spring 403 work together to make the two pressure plates 404 first press and fix the mold plate inside the inner frame plate 101, so that the mold plate is clamped and fixed. Then the reaming drill 10 performs reaming processing on the mold plate to ensure the stability of the reaming processing of the mold plate by the reaming drill 10. The rubber pad 405 effectively improves the friction between the pressure plate 404 and the side of the mold plate, further improving the clamping stability.

[0026] This solution has the following working process: The servo motor 109 drives the shaft 103 and the inner frame plate 101 to rotate and adjust. By rotating the opening of the inner frame plate 101 upwards, the mold plate to be enlarged can be placed inside the inner frame plate 101 through the opening. At this time, the four sides of the mold plate are in contact with the inner wall of the inner frame plate 101, and one end of the steel mold plate is attracted and fixed by the permanent magnet block 108. Thus, the mold plate is precisely positioned by the internal space limitation of the inner frame plate 101 and the attraction of the permanent magnet block 108. After the mold plate is placed, the rotated inner frame plate 101 drives the mold... The mold plate is placed horizontally, with the reamer 10 aligned with the hole on the horizontally placed mold plate. The hydraulic push rod 7 is activated, causing the mounting plate 8 to move downwards via its output end. This causes the reamer 10, rotating at high speed at the bottom of the mounting plate 8, to enlarge the hole on the mold plate. During the reaming process, after enlarging a portion of the hole on one side, the hydraulic push rod 7 moves the mounting plate 8 and the reamer 10 at its bottom back to a higher position. The reamer 10 then exits the hole. By rotating the adjustable inner frame plate 101, the mold plate can be automatically flipped 180 degrees, allowing the reamer 10 to proceed from the other end of the hole. The process continues with another part of the hole-expanding process, performing bidirectional hole-expanding on the mold plate. During this process, air with a certain pressure is delivered to the air plate 201 through the air inlet pipe 204 and evenly blown out through multiple air blowing holes 203. The inner frame plate 101 drives the two sides of the mold plate to repeatedly flip and switch, so that both sides of the mold plate are cleaned by the airflow blown out of the air blowing holes 203. The cold airflow is evenly blown out through multiple air blowing holes 203 onto the single side of the mold plate after it has been expanded and flipped downwards, thereby efficiently removing metal debris and coolant residue adhering to the hole wall, hole opening, and mold plate surface. At the same time, the mold plate is cleaned during the hole-expanding process. The mold plate is cooled and dissipated. After the mold plate is enlarged, the inner frame plate 101 is rotated to a certain angle so that the opening of the inner frame plate 101 is tilted downward. At this time, the through groove 306 on the end of the inner frame plate 101 away from the opening is aligned with the air outlet 303. The airflow inside the first inner cavity 202 is transported to the second inner cavity 302 through the air supply pipe 301 and blown out to one end of the mold plate through multiple air outlets 303. Thus, the mold plate overcomes the attraction force of the permanent magnet block 108 by its own weight and the airflow assists in pushing the mold plate. As a result, the mold plate slides out from the inner frame plate 101, and the mold plate with the enlarged hole is quickly taken out.

[0027] Further as Figure 5 and Figure 6As shown, it is worth noting that multiple ball bearings 106 are rolled on the inner sidewalls of both sides of the inner frame plate 101 and are distributed at equal intervals. A guide slope 107 is provided at the open end of the inner frame plate 101. In actual operation, the ball bearings 106 effectively reduce the friction between the mold plate and the inner sidewall of the inner frame plate 101, so that the mold plate can be smoothly inserted into or removed from the inner frame plate 101. The guide slope 107 facilitates the insertion of the mold plate into the inner frame plate 101.

[0028] Further as Figure 1 , Figure 5 , Figure 6 and Figure 11 As shown, it is worth noting that one of the shafts 103 has a protruding plate 104 fixed to its end, and a locking bolt 105 is threaded onto the protruding plate 104. The side of the worktable 5 is provided with threaded holes 110 that are adapted to the threads of the locking bolt 105. There are two threaded holes 110, and the two threaded holes 110 are horizontally symmetrically distributed about the central axis of the shaft 103. When the two sides of the mold plate are flipped to be horizontal, the locking bolt 105 is aligned with the two threaded holes 110. When the mold plate is adjusted to a horizontal position, the locking bolt 105 is screwed into the threaded hole 110, thereby locking the inner frame plate 101 and the mold plate inside the inner frame plate 101, improving the stability of the horizontal placement of the mold plate, and thus ensuring the stability of the reaming drill 10 in the reaming process of the mold plate.

[0029] A method for enlarging a hole using a die-processing device includes the following steps: S1. By rotating the opening of the inner frame plate 101 to tilt upwards, the mold plate to be enlarged can be placed inside the inner frame plate 101 through the opening of the inner frame plate 101. At this time, the four sides of the mold plate are in close contact with the inner sidewall of the inner frame plate 101, and one end of the steel mold plate is attracted and fixed by the permanent magnet block 108. Thus, the mold plate is positioned by the adsorption cooperation between the internal space of the inner frame plate 101 and the permanent magnet block 108. S2. After placing the mold plate, rotate the inner frame plate 101 to move the mold plate horizontally. At this time, the reaming drill 10 is aligned with the hole on the horizontally placed mold plate. S3. During the hole-reaming process of the reaming drill 10, after the hole is reamed to a certain extent on one side, the mounting plate 8 and the reaming drill 10 at its bottom are reset and moved to a higher position. The reaming drill 10 is withdrawn from the hole. The mold plate can be automatically flipped 180 degrees by the rotatable and adjustable inner frame plate 101, so that the reaming drill 10 can continue to ream to another extent from the other end of the hole, and perform bidirectional hole-reaming on the hole on the mold plate. S4. Air with a certain air pressure is delivered to the inside of the air plate 201 through the air inlet pipe 204 and blown out evenly through multiple air blowing holes 203. The inner frame plate 101 drives the two sides of the mold plate to repeatedly flip and switch, so that both sides of the mold plate are cleaned by the air blown out of the air blowing holes 203. The cold air is blown out evenly to the one side of the mold plate after it is flipped down and expanded through multiple air blowing holes 203, thereby efficiently removing metal debris and coolant residues adhering to the hole wall, hole opening and mold plate surface, while cooling and dissipating heat from the mold plate during the hole expansion process. S5. After the enlargement process of the mold plate is completed, the inner frame plate 101 is rotated to a certain angle so that the opening of the inner frame plate 101 is tilted downward. At this time, the through groove 306 on the end of the inner frame plate 101 away from the opening is aligned with the air outlet 303. The airflow inside the first inner cavity 202 is transported to the second inner cavity 302 through the air supply pipe 301 and blown out to one end of the mold plate through multiple air outlets 303. Thus, the mold plate overcomes the attraction force of the permanent magnet block 108 by the action of its own weight and the airflow assists in pushing the mold plate. As a result, the mold plate slides out from the inner frame plate 101, and the mold plate with the enlarged hole is quickly taken out.

[0030] In summary: The flipping component 1 makes the mold plate flipping operation more convenient and efficient, eliminating the need for a second manual flipping and repeated clamping, greatly improving the overall hole enlargement efficiency. The flipping component 1 allows the mold plate to be flipped, enabling bidirectional hole enlargement. Bidirectional enlargement effectively improves the continuity and uniformity of the cutting texture on the hole wall of deep holes, significantly reducing the slight axial deviation, spiral marks, or vibration marks that easily occur in unidirectional machining. This significantly improves the coaxiality and straightness of the hole, enhancing the accuracy and shape precision of the enlargement process. Simultaneously, it effectively reduces material tearing and burrs commonly seen at the exit face during unidirectional penetration, resulting in a smoother hole opening. Both ends achieve a flat and smooth machining surface, greatly improving the final hole forming quality. Furthermore, it reduces the chip load and heat accumulation during a single machining operation, not only lowering the risk of drill bit wear failure due to prolonged continuous cutting and extending drill bit lifespan, but also reducing thermal deformation of the mold plate and drill bit caused by heat concentration, ensuring the dimensional stability of the mold plate. After the mold plate is flipped, the bottom removal component 2 evenly and finely blows cold air onto the enlarged side, effectively removing microscopic metal debris and coolant residue adhering to the hole wall, hole opening, and mold plate surface, reducing the risk of residual debris being squeezed out during subsequent hole enlargement processes. This reduces the risk of scratching the hole wall during grinding, while simultaneously cooling the mold plate during the hole-expanding process. This accelerates the dissipation of heat accumulated during the first half of the cutting, creating more stable temperature and more uniform stress distribution for the second hole-expanding process. This further reduces microscopic errors in hole diameter caused by localized thermal deformation. Furthermore, by lowering the overall temperature of the mold plate, it ensures safer part removal for the operator. Additionally, a cold airflow cleans the bottom of the mold plate, causing all blown-off debris, oil, and other impurities to settle naturally and be confined to a dedicated chip collection area at the bottom of the worktable 5. This prevents the blown-off impurities from re-adhering to the workpiece surface, avoiding... This eliminates the problem of debris flying everywhere and easily contaminating the work surface during traditional top-blowing, effectively reducing the frequency and workload of cleaning the work surface. After the mold plate is enlarged, the tilting component 1 is rotated to a certain angle, so that the opening of the tilting component 1 is tilted downward. The auxiliary component 3 converts part of the airflow inside the bottom removal component 2 into blowing one end of the mold plate. Under the dual action of the mold plate's own weight and the auxiliary pushing of the airflow blown out by the auxiliary component 3, the mold plate automatically slides out from inside the tilting component 1, thus quickly removing the mold plate after the enlarged hole is processed, effectively improving the convenience of material handling and improving the removal efficiency.

[0031] The servo motor 109, hydraulic actuator 7, and air pump can be purchased commercially. The servo motor 109, hydraulic actuator 7, and air pump are equipped with power supplies. They are mature technologies in the field and have been fully disclosed, so they will not be described again in the specification.

Claims

1. A mold processing hole-expanding device, comprising a worktable (5), characterized in that, The workbench (5) has a first slot (11) on its side. The first slot (11) is provided with a flipping and adjusting component (1) for flipping the mold plate and expanding the hole in both directions. The bottom of the first slot (11) is provided with a bottom removal component (2) for blowing away debris on the mold plate and cooling the hole expansion process. Between the bottom removal component (2) and the flipping and adjusting component (1) is an auxiliary removal component (3) for assisting in removing the mold plate.

2. The mold processing reaming device according to claim 1, characterized in that, The adjustment component (1) includes: An inner frame plate (101) is set inside the first slot (11) and can be flipped and adjusted, with an opening at one end of the inner frame plate (101); A permanent magnet block (108) is fixed inside the other end of the inner frame plate (101); The second slot (102) is opened on the upper and lower sides of the inner frame plate (101).

3. The mold processing reaming device according to claim 2, characterized in that, The tilting component (1) also includes: Ball bearings (106) are rolled onto the inner walls of both sides of the inner frame plate (101); A guide ramp (107) is provided at the opening end of the inner frame plate (101).

4. The mold processing reaming device according to claim 2, characterized in that, The bottom removal component (2) includes: The air deflector (201) is located directly below the first slot (11); The first inner cavity (202) is located inside the air panel (201); The air inlet pipe (204) is connected to the first inner cavity (202); Multiple air holes (203) are provided on the top surface of the air plate (201), and the air holes (203) are connected to the first inner cavity (202).

5. The mold processing reaming device according to claim 4, characterized in that, The auxiliary output component (3) includes: The second inner cavity (302) is located inside the workbench (5); The gas delivery pipe (301) is connected at both ends to the second inner cavity (302) and the first inner cavity (202) respectively; An air vent (303) is provided on the side of the first slot (11), and the air vent (303) is connected to the second inner cavity (302).

6. The mold processing reaming device according to claim 5, characterized in that, The auxiliary output component (3) also includes: The through groove (306) is opened on the side of the inner frame plate (101), and the air outlet (303) is arranged at an angle. When the inner frame plate (101) is tilted and the material is poured, the air outlet (303) and the through groove (306) are inclined and aligned.

7. The mold processing reaming device according to claim 6, characterized in that, The auxiliary output component (3) also includes: A rubber strip (304) located on one side of the through groove (306) is attached and fixed to the side of the inner frame plate (101); The third inner cavity (305) is located inside the rubber strip (304).

8. The mold processing reaming device according to claim 2, characterized in that, The tilting component (1) also includes: A protruding plate (104) is fixed to the end of the shaft (103); A locking bolt (105) is threaded onto a protruding plate (104); A threaded hole (110) is provided on the side of the workbench (5), and the threaded hole (110) is threaded to fit the locking bolt (105).

9. The mold processing reaming device according to claim 7, characterized in that, A movable mounting plate (8) is provided directly above the first slot (11). A reamer (10) is provided at the bottom end of the mounting plate (8). Two sets of clamping assemblies (4) are symmetrically distributed on both sides of the reamer (10) at the bottom end of the mounting plate (8). The clamping assemblies (4) include: The outer cylinder (401) is fixed to the bottom side of the mounting plate (8); The inner slide rod (402) is slidably inserted inside the outer cylinder (401); A rigid spring (403) is disposed inside the outer cylinder (401); and the rigid spring (403) is located at the top of the inner slide bar (402); The pressure plate (404) is fixed to the bottom end of the inner slide bar (402).

10. A method for reaming a hole using the reaming device described in claim 9, characterized in that, Includes the following steps: S1. By rotating the opening of the inner frame plate (101) to tilt upward, the mold plate to be enlarged can be placed inside the inner frame plate (101) through the opening of the inner frame plate (101). At this time, the four sides of the mold plate are in close contact with the inner sidewall of the inner frame plate (101), and the steel mold plate is attracted and fixed by the permanent magnet block (108). Thus, the mold plate is positioned by the attraction and cooperation of the inner space of the inner frame plate (101) and the permanent magnet block (108). S2. After placing the mold plate, rotate the inner frame plate (101) to drive the mold plate to be placed horizontally. At this time, the reaming drill (10) is aligned with the hole on the horizontally placed mold plate. S3. During the hole-reaming process of the reaming drill (10), after the hole is reamed to a certain extent on one side, the mounting plate (8) and the reaming drill (10) at its bottom are reset and moved to a higher position. The reaming drill (10) is withdrawn from the hole. The mold plate can be automatically flipped 180 degrees by the rotatable and adjustable inner frame plate (101), so that the reaming drill (10) can continue to ream to another part of the hole from the other end of the hole, and perform bidirectional hole-reaming on the hole on the mold plate. S4. Air with a certain pressure is delivered to the inside of the air plate (201) through the air inlet pipe (204) and blown out evenly through multiple air blowing holes (203). The inner frame plate (101) drives the two sides of the mold plate to repeatedly flip and switch, so that both sides of the mold plate are cleaned by the air blown out by the air blowing holes (203). The cold air is blown out evenly to the one side of the mold plate after the hole is expanded and flipped downward through multiple air blowing holes (203), thereby efficiently removing metal debris and coolant residues adhering to the hole wall, hole opening and mold plate surface, and cooling the mold plate during the hole expansion process. S5. After the die plate is enlarged, the inner frame plate (101) is rotated to a certain angle so that the opening of the inner frame plate (101) is tilted downward. At this time, the through groove (306) on the end of the inner frame plate (101) away from the opening is aligned with the air outlet (303). The airflow inside the first inner cavity (202) is transported to the second inner cavity (302) through the air supply pipe (301) and blown out to one end of the die plate through multiple air outlets (303). Thus, the die plate overcomes the adsorption force of the permanent magnet block (108) under the action of its own weight and the airflow assists in pushing the die plate. As a result, the die plate slides out from the inner frame plate (101) and the die plate with enlarged hole is quickly taken out.

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