Self-cooling milling cutter convenient to maintain

Abstract

The invention discloses a self-cooling milling cutter based on convenient maintenance, and relates to the technical field of intelligent manufacturing. A pipeline for cutting fluid to flow is arranged in the milling cutter, and a cutter head is guided by a third channel to directly irradiate, so that the device can realize stable self-cooling operation during action; the probability that high temperature is transmitted to the CNC machine tool can be greatly restrained, the stability of the CNC machine tool is guaranteed when the milling cutter is used for intelligent manufacturing and machining, in addition, the first channel, the interior of the sleeve, the second channel and the third channel used for flowing of cutting fluid are exposed in a movable disassembly mode, and therefore the machining efficiency is improved. And the milling cutter can be regularly and conveniently cleaned and maintained, and the stability and accuracy of a CNC numerical control machine tool during intelligent machining through the milling cutter can be further improved.

Description

Technical Field

[0001] The present invention relates to the field of intelligent manufacturing technology, and in particular to a self-cooling milling cutter that is convenient to maintain. Background Art

[0002] Against the backdrop of the rapid development of intelligent manufacturing technology, milling cutters, as key tools in the field of metal processing, have a heat dissipation performance that directly affects processing accuracy, efficiency, and service life. To meet the needs of efficient and intelligent processing, existing technologies often use the internal flow of cutting fluid to dissipate heat and cool the milling cutter.

[0003] However, in the actual processing process, the cutting fluid will inevitably be mixed with impurities such as metal debris, oil, and abrasive particles. With the long-term use of the milling cutter, these impurities will gradually settle and accumulate in the internal pipelines, thereby causing blockage of the cutting fluid delivery pipeline inside the milling cutter. Affected by the bends and corners of the milling cutter's internal pipelines and the small diameter of the pipelines, once blockage occurs, it is usually difficult to penetrate the curved parts inside the pipelines for effective cleaning, resulting in greater difficulty in the maintenance of the milling cutter, which in turn affects the operating stability and accuracy of the milling cutter during intelligent processing and seriously shortens the service life of the milling cutter.

[0004] Therefore, a self-cooling milling cutter with convenient maintenance is proposed to solve some problems existing in the above-mentioned prior art. Summary of the Invention

[0005] The purpose of the present invention is to solve the problem in the prior art that when the milling cutter uses the flow of cutting fluid to dissipate heat and cool itself in intelligent manufacturing processing, it is affected by impurities in the cutting fluid, resulting in easy blockage of the internal pipes of the milling cutter, and inconvenience in clearing and maintenance, which affects the stability of the milling process and the service life of the milling cutter. A self-cooling milling cutter based on easy maintenance is proposed to solve the problem in the prior art that when the milling cutter uses the flow of cutting fluid to dissipate heat and cool itself, it is affected by impurities in the cutting fluid,

[0006] In order to solve the problems existing in the prior art, the present invention adopts the following technical solutions: A self-cooling milling cutter for easy maintenance includes a tool handle, a connecting platform is fixed to the bottom end of the tool handle, and a cutter disc is fixed to the bottom of the connecting platform, the cutter disc is divided into two from the middle position, forming a first disc body located at the top and a second disc body located at the bottom, the edge position of the tool disc is provided with a circumferentially distributed groove, the edge position of the second disc body is provided with a circumferentially distributed mounting groove, the groove and the mounting groove are arranged alternately, a cutter head is installed in the mounting groove, the outer side of the tool handle is movably sleeved with a sleeve, the top end of the tool handle is provided with a first channel connected to the sleeve, and the first channel is arranged as an inverted T-shaped structure, a circumferentially distributed second channel is vertically provided in the connecting platform, a third channel connected to the second channel is provided at the bottom of the first disc body, and a water outlet of the third channel extends through the groove.

[0007] Preferably, through holes connected to the corresponding mounting grooves are provided in the first and second disk bodies, bolts are inserted into the cutter head from bottom to top, threads matching the bolts are installed in the through holes in the first disk body, and a first retaining ring located at the top of the sleeve is engaged with the handle.

[0008] Preferably, a positioning pin is fixed on the top of the second disk body, and a positioning groove adapted to the positioning pin is formed on the bottom of the first disk body.

[0009] Preferably, the movable sleeve on the handle is provided with a guide plate located in the sleeve, and the guide plate is arranged as a double helix structure.

[0010] Preferably, the movable sleeve on the handle is provided with a metal sealing ring located below the sleeve, and a first filter is provided in the metal sealing ring.

[0011] Preferably, a first annular groove is formed around the top of the connecting platform and is located below the first filter screen, and the top end of the second channel is communicated with the first annular groove.

[0012] Preferably, the inner end wall of the groove is set to an arc structure, the water outlet of the third channel is tangent to the inner end wall of the groove, and the cutting fluid sprayed from the water outlet of the third channel acts on the cutter head along the inner end wall of the groove.

[0013] Preferably, a volute chamber is provided inside the second disk body, and a transmission shaft rotates in the volute chamber, and a pump blade matching the size of the interior of the volute chamber is fixed on the transmission shaft, and a first sealing plate covering the bottom of the volute chamber is movably installed at the bottom of the second disk body, a water inlet is provided in the middle position of the first sealing plate, and a second filter is installed in the water inlet, a second clamping ring supported under the first sealing plate is engaged with the bottom of the second disk body, a fourth channel is vertically penetrated and distributed around the first disk body, a second annular groove connected to the water outlet of the volute chamber is provided around the top of the second disk body, and the second annular groove is connected to the bottom of the fourth channel.

[0014] Preferably, a nozzle is installed at the upper end of the fourth channel, and the nozzle is inclined toward the outer end wall of the sleeve. A baffle is installed at the top end of the sleeve, and an arc groove is opened around the bottom of the baffle.

[0015] Preferably, a vortex chamber is opened in the middle position of the bottom of the first disk body, the bottom end of the second channel is connected to the top of the vortex chamber, the third channel is connected to the bottom of the vortex chamber, the transmission shaft passes through the vortex chamber, and a turbofan adapted to the internal size of the vortex chamber is fixed on the transmission shaft. A second sealing plate located between the pump blades and the turbofan is movably sleeved on the transmission shaft, and the second sealing plate movably covers the top of the volute chamber and the second annular groove.

[0016] Compared with the prior art, the present invention has the following beneficial effects: 1. In the present invention, by arranging the pipeline for the flow of cutting fluid inside the milling cutter and guiding the fluid directly into the cutter head through the third channel, the device can not only achieve stable self-cooling operation during operation, but also significantly suppress the probability of high temperature transmission to the CNC machine tool, which is conducive to ensuring the stability of the CNC machine tool when using the milling cutter for intelligent manufacturing processing. In addition, the first channel for the flow of cutting fluid, the interior of the sleeve, the second channel, and the third channel are exposed through a movable disassembly method, so that the milling cutter can be cleaned and maintained regularly and conveniently, which is conducive to further improving the stability and accuracy of the CNC machine tool when using the milling cutter for intelligent processing; 2. In the present invention, by installing a guide plate with a double helical structure on the outside of the tool holder in the sleeve, the cutting fluid can quickly and evenly cover the inside of the sleeve and the outside of the tool holder from top to bottom with the guidance of the helical structure, so that the heat on the tool holder and the sleeve can be carried downward more evenly and stably. At the same time, by arranging the first filter screen on the inside of the metal sealing ring, the first filter screen can be used to filter and block impurities in the cutting fluid, preventing them from entering the second channel and the third channel with smaller inner diameters, and temporarily retaining the impurities in the cutting fluid in the larger internal annular space of the sleeve, thereby effectively ensuring the stability of the device during operation. 3. In the present invention, by configuring the outlet of the third channel as a curved structure, and by tangently connecting the curved structure to the inner wall of the groove, the cutting fluid, after being ejected at high speed from the outlet of the third channel, will move at high speed along the curved surface of the inner wall of the groove, guiding the cutting fluid to act on the cutter head, thereby achieving a direct flushing operation on the cutter head during the milling process. In addition, due to the arc-shaped guidance of the groove, the cutting fluid acting on the cutter head can be flushed from the center of the cutter disc to the cutter head at the edge of the cutter disc, flushing from the inside out, which can further improve the smoothness and comprehensiveness of the flushing and separation of metal debris from the cutter head and the component at the milling operation position; 4. In the present invention, a vortex chamber is opened between the second channel and the third channel, and a turbofan is provided in the vortex chamber. With the help of the transmission connection of the transmission shaft, the original flow of the cutting fluid in the milling cutter can provide power for the rotation of the pump blades in the volute chamber, so that the pump blades cooperate with the volute chamber to extract the cutting fluid gathered around the working position, avoiding excessive gathering of cutting fluid at the working position and affecting the stability of intelligent milling. At the same time, a nozzle is provided to guide the cutting fluid sprayed out of the fourth channel, so that the cutting fluid can flow from bottom to top on the outer end wall of the sleeve. With the help of the stop of the baffle and the guidance of the arc groove at the bottom, the heat dissipation and cooling effect of the milling cutter can be further enhanced. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] The drawings described herein are used to provide a further understanding of the present invention and constitute a part of this application. The exemplary embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation of the present invention. In the drawings: Figure 1 A perspective view of the present invention; Figure 2 A top view of the present invention; Figure 3 For the present invention Figure 2 Cross-sectional view at AA in the middle; Figure 4 For the present invention Figure 2 Cross-sectional view at the middle BB; Figure 5 For the present invention Figure 2 Cross-sectional view at CC; Figure 6 A perspective view of the first disk and the structure thereon of the present invention; Figure 7 For the present invention Figure 6 Split diagram of the structure in the middle; Figure 8 This is an exploded view of the vortex chamber and turbofan of the present invention; Figure 9 A bottom view of the first disk of the present invention; Figure 10 is a perspective view of the second disk and the structure thereon of the present invention; Figure 11 For the present invention Figure 10 Split diagram from the upper perspective of the middle structure; Figure 12 For the present invention Figure 10 Split diagram from the perspective below the middle structure; Figure 13 It is a top view of the second disk of the present invention.

[0018] Serial number in the picture: 1. Tool handle; 101. Connecting platform; 102. Tool disc; 1021. First disc body; 1022. Second disc body; 103. Groove; 104. Mounting slot; 105. Tool head; 106. Through hole; 107. Bolt; 108. Positioning pin; 109. Positioning slot; 2. Sleeve; 201. First channel; 202. First retaining ring; 203. Guide plate; 204. Metal sealing ring; 205. First filter screen; 206. Second channel; 207. Third channel; 208. First ring groove; 3. Volute chamber; 301. Drive shaft; 302. Pump blade; 303. First sealing plate; 304. Second filter screen; 305. Second retaining ring; 306. Fourth channel; 307. Second ring groove; 308. Nozzle; 309. Baffle; 4. Vortex chamber; 401. Turbofan; 402. Second sealing plate. DETAILED DESCRIPTION

[0019] The technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments.

[0020] Example: This example provides a self-cooling milling cutter based on easy maintenance, see Figure 1 - Figure 13 The utility model comprises a tool handle 1, a connecting platform 101 is fixed at the bottom end of the tool handle 1, and a cutter disc 102 is fixed at the bottom of the connecting platform 101, and the cutter disc 102 is divided into two parts from the middle position, forming a first disc body 1021 located at the top and a second disc body 1022 located at the bottom. The edge position of the tool disc 102 is provided with a surrounding groove 103, and the edge position of the second disc body 1022 is provided with a surrounding mounting groove 104. The groove 103 and the mounting groove 104 are staggered. A cutter head 105 is installed in the mounting groove 104. A sleeve 2 is movably sleeved on the outer side of the tool handle 1. A first channel 201 connected to the sleeve 2 is provided at the top end of the tool handle 1, and the first channel 201 is arranged as an inverted T-shaped structure. A surrounding second channel 206 is vertically opened in the connecting platform 101. A third channel 207 connected to the second channel 206 is provided at the bottom of the first disc body 1021, and the water outlet of the third channel 207 passes through the groove 103.

[0021] When the milling cutter is in use, it is placed in the intelligent tool magazine of the CNC machine tool. The top of the tool handle 1 is made of a standardized structure to achieve high-precision mechanical connection between the milling cutter and the CNC spindle. In addition, an RFID chip or a QR code is provided on the tool handle 1, so that the CNC system can automatically identify the parameters of the milling cutter. Without manual input, the corresponding milling cutter can be called by the tool changing robot according to processing requirements. After the milling cutter is connected to the CNC spindle, it is driven by the CNC machine tool and connected to the connecting table 101 and the cutter disc 102. When the tool handle 1 is driven to rotate, it can drive many surrounding cutter heads 105 to rotate at high speed. With the help of the blades provided on the outside of the cutter heads 105, the parts are milled to complete the intelligent manufacturing processing of the parts.

[0022] During milling, the first channel 201 opened at the top of the tool holder 1 is connected to the cutting fluid supply mechanism in the CNC machine tool. Cutting fluid is continuously supplied to the first channel 201 through pumping. When the device is performing milling, when the cutter head 105 rotates at high speed and contacts the surface of the component, the temperature of the cutter head 105 rises suddenly due to contact friction. Under the efficient heat transfer effect of the metal structure, the high temperature at the cutter head 105 spreads to the cutter disc 102, the connecting platform 101 and the tool holder 1, causing the temperature of the entire milling cutter to rise rapidly. Synchronously, the cutting fluid enters the cylindrical space formed on the outside of the tool holder 1 in the sleeve 2 through the connection of the first channel 201, continues to flow downward, and then enters the third channel 207 through the second channel 206, and finally flows out from the third channel 20 The water is sprayed out from the outlet of 7 and acts on the nearby cutter head 105. During this process, the continuous flow of cutting fluid can absorb the heat on the milling cutter and bring it out through the rapid flow of cutting fluid, thereby realizing the operation of automatically reducing the overall temperature of the milling cutter. During the heat dissipation and cooling process, since the flow direction of the cutting fluid is opposite to the direction of heat diffusion on the milling cutter, the cutting fluid flows from the top of the tool handle 1 to the cutter disc 102, and the heat diffuses from the cutter disc 102 to the top of the tool handle 1. This allows the device to greatly suppress the high heat generated by the processing on the milling cutter from being transferred to the spindle of the CNC machine tool with the help of the flow of internal cutting fluid, thereby avoiding the high temperature generated on the working surface during milling processing from affecting the internal structure of the CNC machine tool, and can effectively improve the stability of using the milling cutter for intelligent manufacturing.

[0023] In this device, after the cutting fluid is ejected through the third channel 207, it directly acts on the nearby cutter head 105, and the cutting fluid can be directly flushed on the cutter head 105 on the milling working surface, which can not only effectively improve the heat dissipation and cooling effect of the cutter head 105, but also can flush the metal debris dropped by milling away from the milling working surface in time through the direct flushing of the cutting fluid, so as to avoid the debris from accumulating on the working surface between the cutter head 105 and the parts, or sticking to the cutter head 105, which can effectively improve the precision and stability of milling parts using the device.

[0024] Moreover, in the milling cutter, the sleeve 2 is movably sleeved on the outside of the tool handle 1. By disassembling, the sleeve 2 can be removed from the tool handle 1, so that the internal space of the sleeve 2 for the circulation of cutting fluid is directly exposed. The first channel 201 is set to an inverted T-shaped structure, so that the pipeline in the first channel 201 is in a horizontal and short state, which is convenient for disassembly and cleaning. Similarly, by dividing the cutter disc 102 into the first disc body 1021 and the second disc body 1022, and opening the third channel 207 at the bottom of the first disc body 1021, the third channel 207 is opened. The second channel 206 passes vertically through the first disk body 1021. After the first disk body 1021 and the second disk body 1022 are separated, the second channel 206 and the third channel 207 are also directly exposed, which is convenient for dredging and cleaning. The above-mentioned structural arrangement allows the pipeline for the circulation of cutting fluid inside the milling cutter to be exposed by disassembly, which is convenient for cleaning and maintenance. Through regular and convenient cleaning and maintenance, the blockage of the cutting fluid delivery pipeline causing the milling cutter to be unable to be used normally can be effectively avoided, which is conducive to ensuring the stability of the CNC machine tool when using the milling cutter for intelligent processing.

[0025] In the specific implementation process, Figure 4 、 Figure 6 and Figure 102, and the first and second cams 102 are connected to each other by the screw thread 106 that fits the first and second cams 106. As shown in FIG, a through hole 106 is provided in the first plate body 1021 and the second plate body 1022, which is connected to the corresponding mounting groove 104. A bolt 107 is inserted from bottom to top in the cutter head 105. A thread that matches the bolt 107 is fitted in the through hole 106 in the first plate body 1021. A first retaining ring 202 located at the top of the sleeve 2 is engaged with the tool handle 1. When the milling cutter is in use, when it is necessary to remove the sleeve 2 from the tool handle 1, the staff only needs to pry open the first retaining ring 202 to release the restriction of the sleeve 2 on the tool handle 1, and then slide it upward to remove the sleeve 2 from the tool handle 1, exposing the first channel 201 and the interior of the sleeve 2, which is convenient for cleaning and maintenance. The disassembly and assembly of the sleeve 2 is convenient and can be achieved by only prying the first retaining ring 202. When it is necessary to disassemble the cutter head 102, the staff only needs to remove the bolt 107, which can not only realize the disassembly of the first plate body 1021, but also realize the disassembly and assembly of the first plate body 1021. The separation of the first plate 1021 and the second plate 1022 can also remove the cutter head 105 from the mounting groove 104, which is convenient for simultaneous replacement of the cutter head 105 during disassembly and maintenance, and dredging and cleaning operations are performed on the second channel 206 and the third channel 207. The through holes 106 for inserting the bolts 107 are correspondingly opened on the first plate 1021 and the second plate 1022, and the threads adapted to the bolts 107 are assembled in the through holes 106 in the first plate 1021, so that in the device, the fixation of the first plate 1021 and the second plate 1022, and the fixation of the cutter head 105 installed in the mounting groove 104 are integrated together. The above-mentioned structural arrangement can not only effectively improve the compactness of the internal structure of the device, but also effectively reduce the use of fastening components, which is beneficial to reducing the manufacturing cost of the milling cutter and improving the convenience of disassembling the milling cutter, thereby improving the convenience of its periodic maintenance.

[0026] In the specific implementation process, Figure 1 、 Figure 6 and Figure 10 As shown, a locating pin 108 is fixed on the top of the second disk body 1022, and a locating groove 109 adapted to the locating pin 108 is provided at the bottom of the first disk body 1021. When the milling cutter is in use, the radial positioning of the first disk body 1021 and the second disk body 1022 after connection is achieved through the cooperation of the numerous locating pins 108 and the locating grooves 109 between the first disk body 1021 and the second disk body 1022, which can effectively improve the structural stability of the cutter disc 102 in the radial direction after assembly. The sizes of the numerous locating pins 108 are different, which makes the connection combination between the first disk body 1021 and the second disk body 1022 have a unique standard, which makes the first disk body 1021 and the second disk body 1022 not misaligned when they are disassembled and reassembled, avoiding the different degrees of wear at different positions affecting the operation of the assembled milling cutter, which is conducive to further improving the stability of the device during disassembly and maintenance and then assembly.

[0027] In the specific implementation process, Figure 3 - Figure 5 and Figure 7 As shown, the movable sleeve on the tool handle 1 is provided with a guide plate 203 located in the sleeve 2, and the guide plate 203 is set to a double helix structure. When the milling cutter is in use, when the cutting fluid flows from the first channel 201 into the cylindrical space formed on the outside of the tool handle 1 in the sleeve 2, the cutting fluid will be guided by the guide plate 203 on the outside of the tool handle 1 in the sleeve 2 during the downward flow. Since the guide plate 203 is set to a double helix structure, the cutting fluid can quickly and evenly cover the inside of the sleeve 2 and the outside of the tool handle 1 from top to bottom through the guidance of the spiral structure, so that the heat on the tool handle 1 and sleeve 2 can be carried downward more evenly and stably.

[0028] The tool handle 1 is provided with a metal sealing ring 204 located below the sleeve 2, and a first filter screen 205 is provided in the metal sealing ring 204. The top of the connecting platform 101 is surrounded by a first annular groove 208 located below the first filter screen 205. The top of the second channel 206 is connected to the first annular groove 208. When the milling cutter is used, the metal sealing ring 204 is installed on the top of the connecting platform 101 and the bottom of the sleeve 2. With the help of the elastic deformation of the metal sealing ring 204 after being squeezed, it can be effectively ensured that after the sleeve 2 is sleeved on the tool handle 1, the bottom of the sleeve 2 and the connecting platform are in contact. The sealing of the connection between the top of 101 can prevent the cutting fluid from leaking outward during the internal flow process. At the same time, by arranging the first filter screen 205 on the inner side of the metal sealing ring 204, the cutting fluid can be filtered when it flows from the sleeve 2 to the second channel 206, thereby preventing impurities in the cutting fluid from entering the second channel 206 and the third channel 207 with smaller inner diameters. Through the filtering and blocking of the first filter screen 205, the impurities in the cutting fluid can be temporarily retained in the circular space with larger internal dimensions in the sleeve 2, thereby effectively ensuring the stability of the device during operation.

[0029] When using the first filter 205 to filter and block impurities in the cutting fluid, a first annular groove 208 is opened around the corresponding position below the first filter 205 on the top of the connecting platform 101, which is used to connect the multiple second channels 206 and the internal space of the sleeve 2, so that the cutting fluid can pass through the first filter 205 from the sleeve 2 more smoothly into the second channel 206, avoiding the accumulation of impurities on the part of the second channel 206 facing the first filter 205, which affects the circulation and transportation stability of the cutting fluid. With mutual cooperation, the stability of the milling cutter during actual use can be effectively guaranteed.

[0030] In the specific implementation process, Figure 1 and Figure 10As shown, the inner end wall of the groove 103 is set to a circular arc structure, the water outlet of the third channel 207 is tangent to the inner end wall of the groove 103, and the cutting fluid sprayed from the water outlet of the third channel 207 acts on the cutter head 105 along the inner end wall of the groove 103. When the milling cutter is in use, the water outlet of the third channel 207 is set to a curved structure, and the curved structure is tangent to the inner wall of the groove 103, which makes the cutting fluid move at high speed along the curved surface of the inner wall of the groove 103 after being sprayed out from the water outlet of the third channel 207 at high speed. The other end of the curved surface of the inner wall of the groove 103 points to the cutter head 105 in the mounting groove 104, and passes through the third channel 207. The spraying of the water outlet 07 and the guidance of the groove 103 can directly act on the cutter head 105, thereby realizing a direct flushing operation on the cutter head 105 during the milling process. In addition, during the above operation, the cutting fluid acting on the cutter head 105 is affected by the arc-shaped guidance of the groove 103, so that the cutting fluid can be flushed from the center of the cutter disc 102 to the cutter head 105 at the edge of the cutter disc 102, and flushed from the inside to the outside, which can further improve the smoothness and comprehensiveness of the flushing and separation of the cutter head 105 and the metal debris at the milling operation position of the component, thereby enabling the intelligent milling process to be carried out stably for a long time.

[0031] In the specific implementation process, Figure 3 - Figure 5 and Figure 11 - Figure 13 As shown, a volute chamber 3 is provided inside the second disk 1022, and a transmission shaft 301 rotates inside the volute chamber 3, and a pump blade 302 adapted to the internal size of the volute chamber 3 is fixed on the transmission shaft 301, and a first sealing plate 303 covering the bottom of the volute chamber 3 is movably installed at the bottom of the second disk 1022, and a water inlet is provided in the middle position of the first sealing plate 303, and a second filter screen 304 is installed in the water inlet, and a second retaining ring 305 supported below the first sealing plate 303 is engaged with the bottom of the second disk 1022, and a fourth channel 306 that passes vertically is distributed around the first disk 1021, and a second annular groove 307 connected to the water outlet of the volute chamber 3 is provided around the top of the second disk 1022, and the second annular groove 307 is connected to the bottom of the fourth channel 306.

[0032] A vortex chamber 4 is opened in the middle position of the bottom of the first disk body 1021, the bottom end of the second channel 206 is connected to the top of the vortex chamber 4, the third channel 207 is connected to the bottom of the vortex chamber 4, the transmission shaft 301 passes through the vortex chamber 4, and a turbofan 401 adapted to the internal size of the vortex chamber 4 is fixed on the transmission shaft 301. A second sealing plate 402 located between the pump blades 302 and the turbofan 401 is movably sleeved on the transmission shaft 301, and the second sealing plate 402 is movably covered on the volute chamber 3 and the top of the second annular groove 307.

[0033] When the milling cutter is in use, the cutting fluid will pass through the vortex chamber 4 during the high-speed flow from the second channel 206 to the third channel 207 in the milling cutter. Since the second channel 206 is connected to the top of the vortex chamber 4 and the third channel 207 is connected to the bottom of the vortex chamber 4, the cutting fluid will drive the rotatable fan 401 in the vortex chamber 4 to rotate at high speed during the flow of the cutting fluid. Under the transmission connection of the transmission shaft 301, the pump blades 302 are driven to rotate in the volute chamber 3. With the help of the high-speed rotation of the pump blades 302, a continuous suction force is generated in the volute chamber 3. Therefore, during milling processing, the cutting fluid surrounded by the working position outside the cutter head 102 enters through the water inlet opened in the middle position of the second filter 304, and is then discharged through the water outlet of the volute chamber 3. Under the connection of the second annular groove 307, it is transported to each fourth channel 306, and the cutting fluid gathered around the working position is discharged upward at high speed, which can prevent the excessive accumulation of cutting fluid at the working position and the adverse effect on the milling process.

[0034] In the device, the vortex chamber 4 is opened in the middle position of the bottom of the first disk body 1021, the volute chamber 3 is opened in the middle position of the second disk body 1022, and the second annular groove 307 is opened around the top of the second disk body 1022. This allows the device to completely expose the structure installed in the cutter disc 102 by separating the first disk body 1021 and the second disk body 1022, which can effectively improve the convenience and comprehensiveness of disassembly and maintenance of the milling cutter.

[0035] In the specific implementation process, Figure 1 and Figure 5 As shown, a nozzle 308 is installed at the upper end of the fourth channel 306, and the nozzle 308 is inclined toward the outer end wall of the sleeve 2. A baffle 309 is installed at the top of the sleeve 2, and an arc groove is opened around the bottom of the baffle 309. When the milling cutter is in use, the cutting fluid gathered at the working position outside the cutter head 102 is pumped to the fourth channel 306 and sprayed upward. It can be sprayed on the outer end wall of the sleeve 2 through the guidance of the nozzle 308, so that the cutting fluid flows on both the inside and outside of the sleeve 2, which can further improve the stability of the self-heating and cooling during the operation of the milling cutter. In addition, in the device, the baffle 309 is also provided. The plate 309 is installed around the upper end of the sleeve 2, and can stop the cutting fluid sprayed upward. By setting the bottom of the baffle 309 as a surrounding arc groove, the cutting fluid can be guided by the arc groove at the bottom of the baffle 309 when flowing upward along the outer end wall of the sleeve 2, and can be reversed again to form a scattered water flow on the outside of the milling cutter. The cutting fluid is guided and dispersed by the baffle 309, so that the cutting fluid is diffused in the surrounding environment of the milling cutter. With the help of the vaporization of the water in the cutting fluid after being dispersed, it can absorb the heat in the surrounding environment, thereby further improving the heat dissipation and cooling effect of the device during the milling process.

[0036] Specifically, the working principle and operation method of the present invention are as follows: The device is installed by connecting the tool handle 1 to the CNC spindle, and then the device is controlled by the CNC to rotate at high speed, and the intelligent milling of parts is realized through the tool head 105. During the processing, the cutting fluid supply mechanism in the CNC machine tool continuously provides cutting fluid to the first channel 201, and the cutting fluid enters the sleeve 2 through the first channel 201. Under the guidance of the double-helix structure of the guide plate 203 outside the tool handle 1 in the sleeve 2, the cutting fluid is evenly dispersed in the cylindrical space outside the tool handle 1 in the sleeve 2. The cutting fluid passes through the first filter 205 in the metal sealing ring 204 and is filtered. After entering the first annular groove 208, the cutting fluid is dispersed and transported to each second channel 206, and then flows from top to bottom through the vortex chamber 4, and finally ejected through the third channel 207 connected to the bottom of the vortex chamber 4. Guided by the arc structure of the inner wall of the groove 103, the cutting fluid is directly flushed on the tool head 105, thereby achieving cooling of the inside of the milling cutter and cooling and flushing of the tool head 105. Synchronously, when the cutting fluid passes through the vortex chamber 4 at high speed, it will push the turbofan 401 installed in the vortex chamber 4 to rotate at high speed, and through the transmission connection of the transmission shaft 301, drive the pump blade 302 to rotate in the volute chamber 3, generating a continuous suction force in the volute chamber 3, and the cutting fluid surrounded by the working position outside the cutter head 102 is drawn in through the water inlet opened in the middle position of the second filter screen 304, and then transported to each fourth channel 306 through the water outlet of the volute chamber 3 and the connection of the second annular groove 307, and finally sprayed out through the nozzle 308, and the cutting fluid gathered around the working position is discharged upward at high speed to avoid excessive gathering of cutting fluid at the working position. The cutting fluid sprayed from the nozzle 308 acts on the outer end wall of the sleeve 2 and flows from bottom to top on the outer surface of the sleeve 2, thereby enhancing the heat dissipation and cooling effect, and is stopped and guided by the baffle 309 to disperse the cutting fluid around the milling cutter, and absorb heat by vaporization of water in the cutting fluid, thereby further enhancing the heat dissipation and self-cooling effect of the device; During routine maintenance of the milling cutter, the sleeve 2 and the shank 1 can be separated after prying off the first retaining ring 202. After removing the bolt 107, the first disk body 1021 and the second disk body 1022 can be separated, exposing the internal structure of the milling cutter and the circulation path of the cutting fluid, thereby efficiently and conveniently performing maintenance operations on the milling cutter.

[0037] The above are only preferred specific embodiments of the present invention, but the scope of protection of the present invention is not limited thereto. Any technician familiar with this technical field, within the technical scope disclosed by the present invention, who makes equivalent replacements or changes based on the technical solutions and inventive concepts of the present invention, should be covered by the scope of protection of the present invention.

Claims

1. A self-cooling milling cutter based on easy maintenance, comprising a tool holder (1), characterized in that: A connecting platform (101) is fixed at the bottom end of the knife handle (1), and a knife disc (102) is fixed at the bottom of the connecting platform (101). The knife disc (102) is divided into two parts from the middle position to form a first disc body (1021) located at the top and a second disc body (1022) located at the bottom. The edge position of the knife disc (102) is provided with a surrounding groove (103), and the edge position of the second disc body (1022) is provided with a surrounding installation groove (104). The groove (103) and the installation groove (104) are arranged in a staggered manner. A cutter head (105) is installed in (104), a sleeve (2) is movably provided on the outer side of the knife handle (1), a first channel (201) connected to the sleeve (2) is provided at the top end of the knife handle (1), and the first channel (201) is configured as an inverted T-shaped structure, a second channel (206) is vertically provided in the connecting platform (101) and is distributed in a surrounding manner, a third channel (207) is provided at the bottom of the first disk (1021) and is connected to the second channel (206), and a water outlet of the third channel (207) extends through the groove (103).

2. The self-cooling milling cutter for easy maintenance according to claim 1, characterized in that: A through hole (106) communicating with the corresponding mounting groove (104) is provided through the first disk body (1021) and the second disk body (1022); a bolt (107) is inserted from bottom to top into the cutter head (105); a thread matching the bolt (107) is provided in the through hole (106) in the first disk body (1021); and a first retaining ring (202) located at the top of the sleeve (2) is engaged with the handle (1).

3. The self-cooling milling cutter for easy maintenance according to claim 2, characterized in that: A positioning pin (108) is fixed to the top of the second disk body (1022), and a positioning groove (109) adapted to the positioning pin (108) is provided at the bottom of the first disk body (1021).

4. The self-cooling milling cutter for easy maintenance according to claim 1, characterized in that: The movable sleeve on the knife handle (1) is provided with a guide plate (203) located in the sleeve (2), and the guide plate (203) is configured as a double helix structure.

5. The self-cooling milling cutter for easy maintenance according to claim 1, characterized in that: The movable sleeve on the knife handle (1) is provided with a metal sealing ring (204) located below the sleeve (2), and a first filter screen (205) is provided in the metal sealing ring (204).

6. The self-cooling milling cutter for easy maintenance according to claim 5, characterized in that: A first annular groove (208) is provided around the top of the connecting platform (101) and is located below the first filter screen (205). The top end of the second channel (206) is in communication with the first annular groove (208).

7. The self-cooling milling cutter for easy maintenance according to claim 1, characterized in that: The inner end wall of the groove (103) is configured as an arc-shaped structure, the water outlet of the third channel (207) is tangent to the inner end wall of the groove (103), and the cutting fluid sprayed from the water outlet of the third channel (207) acts on the cutter head (105) along the inner end wall of the groove (103).

8. The self-cooling milling cutter for easy maintenance according to claim 1, characterized in that: A volute chamber (3) is provided inside the second disk (1022), and a transmission shaft (301) rotates inside the volute chamber (3). A pump blade (302) adapted to the internal size of the volute chamber (3) is fixed on the transmission shaft (301). A first sealing plate (303) covering the bottom of the volute chamber (3) is movably installed at the bottom of the second disk (1022). A water inlet is provided at a middle position inside the first sealing plate (303), and a second filter screen (304) is installed in the water inlet. A second retaining ring (305) supported below the first sealing plate (303) is engaged with the bottom of the second disk (1022). A fourth channel (306) extending vertically therethrough is distributed around the first disk (1021). A second annular groove (307) communicating with the water outlet of the volute chamber (3) is provided around the top of the second disk (1022), and the second annular groove (307) is communicated with the bottom of the fourth channel (306).

9. The self-cooling milling cutter for easy maintenance according to claim 8, characterized in that: A nozzle (308) is installed at the upper end of the fourth channel (306), and the nozzle (308) is inclined toward the outer end wall of the sleeve (2). A baffle (309) is installed at the top end of the sleeve (2), and an arc groove is formed around the bottom of the baffle (309).

10. The self-cooling milling cutter for easy maintenance according to claim 8, characterized in that: A vortex chamber (4) is provided at the middle position of the bottom of the first disk body (1021), the bottom end of the second channel (206) is communicated with the top of the vortex chamber (4), the third channel (207) is communicated with the bottom of the vortex chamber (4), the transmission shaft (301) passes through the vortex chamber (4), a turbofan (401) adapted to the internal dimensions of the vortex chamber (4) is fixed on the transmission shaft (301), a second sealing plate (402) located between the pump blades (302) and the turbofan (401) is movably sleeved on the transmission shaft (301), and the second sealing plate (402) movably covers the volute chamber (3) and the top of the second annular groove (307).

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