A CNC for processing molds

Abstract

The invention belongs to the technical field of numerical control milling machines, and specifically is a CNC for processing molds, comprising a CNC body, a fixed table, a movable table, a processing table and a cleaning unit; the cleaning unit comprises a No. 1 air cavity, a No. 2 air cavity, a No. 1 air pipe, a No. 2 air pipe, an air outlet pipe and an air jet head; during the collision of the movable table, the contact surface of the No. 1 air cavity or the No. 2 air cavity with the movable table is deformed, and compressed gas is ejected from the air jet head through the air outlet pipe, and the air jet head is arranged obliquely to perform unidirectional air jet toward the movable table and the processing table, so as to collect iron filings generated by the processing, improve the cleanliness of the processing table and the movable table surface, and further improve the precision of mold processing; through the principle of opposite attraction of electromagnets, the collision of the No. 1 air cavity or the No. 2 air cavity with the movable table cooperates with each other, so as to improve the air outlet efficiency of the No. 1 air cavity or the No. 2 air cavity, and further improve the air outlet efficiency of the air outlet pipe, and further accelerate the collection of iron filings.

Description

Technical Field

[0001] The invention belongs to the technical field of numerical control milling machines, in particular to a CNC for machining moulds. Background Art

[0002] The development of science and technology and the rise and continuous maturity of the world's advanced manufacturing technology have put forward higher requirements for CNC processing technology; the application of technologies such as ultra-high-speed cutting and ultra-precision processing has put forward higher performance indicators for the CNC system, servo performance, spindle drive, machine tool structure, etc. of CNC machine tools; with the development of microelectronics and computer technology, the performance of CNC systems has been improved day by day, the application field of CNC technology has been expanded, and mechanical products have become more and more sophisticated and complex. The processing program is input into the CNC control terminal through the computer, and the CNC executes the program to control the processing position and forward speed of the tool, so that the machine tool can complete the milling processing of the mold blank; in this process, not only the processing time is greatly reduced, but also the processing accuracy is improved, and the processing cost is further reduced.

[0003] When the tool rotates at high speed to mill steel mold blanks, a large amount of iron chips will be generated. These iron chips and the cutting fluid used for cooling are thrown out along with the circular motion. The iron chips generated are of different sizes, which affects the accuracy of mold processing. It is often necessary to clean them up after processing one piece, which is time-consuming, labor-intensive and very inconvenient.

[0004] In view of this, in order to overcome the above technical problems, the present invention designs a CNC for processing molds to solve the above technical problems. Summary of the invention

[0005] The technical problem to be solved by the present invention is that during the high-speed milling process of the tool for milling a steel mold blank, a large amount of iron chips will be generated. These iron chips and the cutting fluid used for cooling are thrown out along with the circular motion. The iron chips generated are of different sizes, which affects the accuracy of mold processing. It is often necessary to clean them up after processing one piece, which is time-consuming, labor-intensive and very inconvenient.

[0006] The present invention provides a CNC for processing molds, which is characterized by comprising a CNC body, a fixed table, a movable table, a processing table and a cleaning unit;

[0007] The fixed table is fixedly connected to the bottom of the CNC body; a movable table is arranged at one end of the fixed table away from the bottom of the CNC body; the movable table is slidably connected to the fixed table; a processing table is arranged at one end of the movable table away from the fixed table; the processing table is fixedly connected to the movable table; a metal clamp is fixed on the processing table, and the clamp is used to fix the mold blank;

[0008] The cleaning unit comprises a No. 1 air cavity, a No. 2 air cavity, a No. 1 air pipe, a No. 2 air pipe, an air outlet pipe and a nozzle; the movable platform is arranged with a No. 1 air cavity and a No. 2 air cavity around; the number of the No. 1 air cavity is one, the number of the No. 2 air cavities is three, the No. 1 air cavity and the No. 2 air cavity have the same structure, and are both fixedly connected to the inner wall of the CNC body, the symmetrically arranged No. 2 air cavity is connected to the No. 1 air cavity through the No. 1 air pipe, and the No. 2 air cavity arranged at one end away from the No. 1 air cavity is connected to the No. 1 air cavity through the No. 2 air pipe; both the No. 1 air pipe and the No. 2 air pipe are provided with a one-way valve, and the gas compressed by the No. 2 air cavity is merged into the No. 1 air cavity through the one-way valve; both the No. 1 air cavity and the No. 2 air cavity are provided with an air inlet; the No. 1 air cavity and the No. 2 air cavity are symmetrically arranged with a No. 1 electromagnet and a No. 2 electromagnet; the No. 1 electromagnet and the No. 2 electromagnet have opposite magnetic poles at the ends close to each other after being energized; the No. 1 air cavity is connected to the nozzle through the air outlet pipe; the nozzle is arranged obliquely.

[0009] Preferably, a No. 1 hole is evenly provided in the fixed platform; a No. 2 hole is evenly provided in the movable platform; the No. 1 hole and the No. 2 hole are staggered; and a filter is provided in the No. 2 hole.

[0010] Preferably, the end of the second hole away from the filter screen is provided with a rounded corner.

[0011] Preferably, a magnetic block is arranged on the filter screen; the magnetic block is fixedly connected to the filter screen.

[0012] Preferably, the air inlet is arranged parallel to the moving platform.

[0013] Preferably, collecting troughs are arranged around the movable platform; a collecting box is arranged at the bottom of the fixed platform; and the collecting box is located at the bottom of the CNC body.

[0014] The beneficial effects of the present invention are as follows:

[0015] 1. The present invention provides a CNC for processing molds. During the collision of the moving table, the contact surface between the first air cavity or the second air cavity and the moving table is deformed, and compressed gas is ejected from the nozzle through the outlet pipe. The nozzle is arranged obliquely to perform unidirectional jetting toward the moving table and the processing table, so as to collect the iron filings generated by the processing, thereby improving the cleanliness of the processing table and the moving table surface, and thus improving the precision of mold processing;

[0016] 2. The present invention provides a CNC for processing molds. When the electromagnet No. 1 and the electromagnet No. 2 in the No. 1 air cavity are energized, a part of the iron filings can be adsorbed to the outer surface of the No. 1 air cavity or the No. 2 air cavity, thereby further realizing the collection of the iron filings. At the same time, the magnetic poles of the ends of the No. 1 and No. 2 electromagnets that are close to each other after being energized are opposite, and through the principle of opposites attracting each other, the collision of the No. 1 air cavity or the No. 2 air cavity with the moving platform cooperates with each other, thereby improving the gas outlet efficiency of the No. 1 air cavity or the No. 2 air cavity, thereby improving the gas outlet efficiency of the gas outlet pipe, thereby accelerating the collection of the iron filings.

[0017] 3. The present invention provides a CNC for processing molds, wherein the fixed table and the movable table cooperate with each other, most of the cutting fluid flows into the No. 2 hole, and through the movement of the movable table, the iron chips collected by the gas on the movable table and the processing table are shaken and enter the No. 2 hole, and through the cooperation with the sprayed cutting fluid, part of the iron chips enter the No. 2 hole along with the cutting fluid, thereby accelerating the efficiency of the iron chips entering the No. 2 hole and improving the collection effect of the iron chips at the dead angles where the mold blank and the processing table, and the processing table and the movable table are connected; BRIEF DESCRIPTION OF THE DRAWINGS

[0018] The present invention will be further described below in conjunction with the accompanying drawings.

[0019] Figure 1 It is the main figure of the present invention;

[0020] Figure 2 is a cross-sectional view of the present invention;

[0021] Figure 3 yes Figure 2 Sectional view at AA in the middle;

[0022] Figure 4 It is a cross-sectional view of air chamber No. 1;

[0023] Figure 5 It is the structural diagram of the filter;

[0024] In the figure: CNC body 1, fixed table 2, movable table 3, processing table 4, cleaning unit 5, No. 1 air cavity 51, No. 2 air cavity 52, No. 1 air pipe 53, No. 2 air pipe 54, outlet pipe 55, nozzle 56, air inlet 57, No. 1 electromagnet 58, No. 2 electromagnet 59, No. 1 hole 21, No. 2 hole 31, filter screen 32, magnetic block 321, collection tank 33, collection box 22. DETAILED DESCRIPTION

[0025] In order to make the technical means, creative features, objectives and effects achieved by the present invention easy to understand, the present invention is further explained below in conjunction with specific implementation methods.

[0026] The present invention provides a CNC for processing a mold, comprising a CNC body 1, a fixed table 2, a movable table 3, a processing table 4 and a cleaning unit 5;

[0027] The fixed table 2 is fixedly connected to the bottom of the CNC body 1; a movable table 3 is arranged at one end of the fixed table 2 away from the bottom of the CNC body 1; the movable table 3 is slidably connected to the fixed table 2; a processing table 4 is arranged at one end of the movable table 2 away from the fixed table 2; the processing table 4 is fixedly connected to the movable table 3; a metal clamp is fixed on the processing table 4, and the clamp is used to fix the mold blank;

[0028] The cleaning unit 5 includes a No. 1 air cavity 51, a No. 2 air cavity 52, a No. 1 air pipe 53, a No. 2 air pipe 54, an air outlet pipe 55 and a nozzle 56; the No. 1 air cavity 51 and the No. 2 air cavity 52 are arranged around the movable platform 3; the No. 1 air cavity 51 is one in number, and the No. 2 air cavity 52 is three in number. The No. 1 air cavity 51 and the No. 2 air cavity 52 have the same structure and are both fixedly connected to the inner wall of the CNC body 1. The symmetrically arranged No. 2 air cavity 52 is connected to the No. 1 air cavity 51 through the No. 1 air pipe 53, and the No. 2 air cavity 52 arranged at one end away from the No. 1 air cavity 51 is connected to the No. 1 air cavity 51 through the No. 2 air pipe 54. 4 is connected with the No. 1 air cavity 51; the No. 1 air pipe 53 and the No. 2 air pipe 54 are both provided with a one-way valve, and the gas compressed in the No. 2 air cavity 52 is introduced into the No. 1 air cavity 51 through the one-way valve; the No. 1 air cavity 51 and the No. 2 air cavity 52 are both provided with an air inlet 57; the No. 1 air cavity 51 and the No. 2 air cavity 52 are both symmetrically arranged with a No. 1 electromagnet 58 and a No. 2 electromagnet 59; the No. 1 electromagnet 58 and the No. 2 electromagnet 59 have opposite magnetic poles at their ends that are close to each other after being energized; the No. 1 air cavity 51 is connected with the nozzle 56 through the air outlet pipe 55; the nozzle 56 is arranged obliquely.

[0029] When the CNC is processing, the CNC body 1 mills the mold blank. In order to change the processing position of the mold blank, the movable table 3 moves. During the movement, the movable table 3 hits the No. 1 air cavity 51 or the No. 2 air cavity 52. ​​When the movable table 3 hits the symmetrically arranged No. 2 air cavity 52, the compressed gas generated by the No. 2 air cavity 52 is merged into the No. 1 air cavity 51 through the No. 1 air pipe 53; when the movable table 3 hits the No. 2 air cavity 52 far away from one end of the No. 1 air cavity 51, the compressed gas generated by the No. 2 air cavity 52 is merged into the No. 1 air cavity 51 through the No. 2 air pipe 54. During the impact of the movable table 3, the contact surface between the No. 1 air cavity 51 or the No. 2 air cavity 52 and the movable table 3 is deformed, and the compressed gas is ejected from the nozzle 56 through the outlet pipe 55. The nozzle 56 is arranged obliquely to perform unidirectional jetting toward the movable table 3 and the processing table 4, so as to collect the iron filings generated by the processing, thereby improving the cleaning of the processing table 3 and the movable table 4. cleanliness, thereby improving the accuracy of mold processing; at the same time of impact contact, the No. 1 electromagnet 58 and the No. 2 electromagnet 59 inside the No. 1 air cavity 51 are energized, and the No. 1 electromagnet 58 and the No. 2 electromagnet 59 are magnetic, which can adsorb a part of the iron filings to the outer surface of the No. 1 air cavity 51 or the No. 2 air cavity 52, further realizing the collection of iron filings; at the same time, the No. 1 electromagnet 58 and the No. 2 electromagnet 59 have opposite magnetic poles at the ends that are close to each other after being energized, and through the principle of opposites attracting each other, the No. 1 air cavity 51 or the No. 2 air cavity 52 is deformed faster, and the collision of the No. 1 air cavity 51 or the No. 2 air cavity 52 with the moving platform 3 cooperates with each other, thereby improving the exhaust efficiency of the No. 1 air cavity 51 or the No. 2 air cavity 52, thereby improving the exhaust efficiency of the air outlet pipe 55, thereby accelerating the collection of iron filings, and when the moving platform 3 is away from the No. 1 air cavity 51 or the No. 2 air cavity 52, the No. 1 air cavity 51 or the No. 2 air cavity 52 is restored to its original state through the air inlet 57.

[0030] The moving platform 3 in the present invention is moved by being pushed by a pneumatic cylinder or a hydraulic cylinder, but is not limited to this form.

[0031] In the present invention, the power on and power off of the electromagnet are controlled by a controller.

[0032] As a specific implementation of the present invention, a No. 1 hole 21 is evenly opened in the fixed platform 2; a No. 2 hole 31 is evenly opened in the movable platform 3; the No. 1 hole 21 and the No. 2 hole 31 are staggered; and a filter net 32 ​​is arranged in the No. 2 hole 31.

[0033] When the CNC body 1 mills the mold blank, a large amount of cutting fluid is sprayed out, and the fixed table 2 cooperates with the movable table 3, and most of the cutting fluid flows into the No. 2 hole 31. Through the movement of the movable table 3, the iron chips collected by the gas on the movable table 3 and the processing table 4 are shaken and enter the No. 2 hole 31. Through the cooperation with the sprayed cutting fluid, part of the iron chips enter the No. 2 hole 31 with the cutting fluid, which speeds up the efficiency of the iron chips entering the No. 2 hole 31 and improves the collection effect of the iron chips at the dead angle where the mold blank and the processing table 4, the processing table 4 and the movable table 3 are connected; because the No. 1 hole 21 and the No. 2 hole 31 are staggered, when the No. 1 hole 21 and the No. 2 hole 31 are staggered, the cutting fluid and the iron chips collected by the gas enter the No. 2 hole 31; when the No. 1 hole 21 and the No. 2 hole 31 are connected, the cutting fluid flows into the No. 1 hole 21 through the No. 2 hole 31, so that the cutting fluid and the iron chips are filtered and separated, reducing the impurity rate of the cutting fluid, which is conducive to the recycling of the cutting fluid and reduces the maintenance cost of the CNC.

[0034] As a specific implementation of the present invention, one end of the second hole 31 away from the filter screen 32 is provided with a rounded corner.

[0035] Hole No. 2 31 is provided with a rounded corner, which cooperates with the movement of the movable table 3 to make it easier for iron chips to enter hole No. 2 31, thereby increasing the speed of the cutting fluid flowing into hole No. 2 31, thereby accelerating the efficiency of the iron chips and cutting fluid collected by the gas entering hole No. 2 31, further improving the collection effect of iron chips at the dead corners where the mold blank is connected to the processing table 4, and the processing table 4 is connected to the movable table 3, and reducing the waste of cutting fluid, thereby improving resource utilization and reducing production and processing costs.

[0036] As a specific implementation of the present invention, a magnetic block 321 is arranged on the filter screen 32 ; the magnetic block 321 is fixedly connected to the filter screen 32 .

[0037] When iron chips flow into the No. 2 hole 31 along with the cutting fluid, the filter screen 32 in the No. 2 hole 31 blocks the iron chips, thereby improving the filtering effect; and the tiny iron chips are adsorbed by the magnetic block 321. As more and more tiny iron chips are adsorbed, the filtering effect of the cutting fluid is further improved, thereby increasing the reuse rate of the cutting fluid and reducing the production and processing costs.

[0038] As a specific implementation of the present invention, the air inlet 57 is arranged in parallel with the moving platform 3 .

[0039] During the movement of the mobile platform 3 , it impacts the first air cavity 51 or the second air cavity 52 . During the impact, the mobile platform 3 blocks the air inlet 57 to prevent leakage of compressed gas, thereby affecting the gas outlet rate of the first air cavity 51 or the second air cavity 52 .

[0040] As a specific implementation of the present invention, a collecting tank 33 is arranged around the movable platform 3 ; a collecting box 22 is arranged at the bottom of the fixed platform 2 ; and the collecting box 22 is located at the bottom of the CNC body 1 .

[0041] After being filtered by the No. 2 hole 31, the filtered cutting fluid flows into the No. 1 hole 21 through the cooperation between the fixed table 2 and the movable table 3, and finally flows into the collection box 22 at the bottom of the fixed table 2 through the No. 1 hole 21, thereby improving the reuse rate of the cutting fluid and reducing the production and processing cost; through the adsorption effect of the No. 1 electromagnet 58 and the No. 2 electromagnet 59, a part of the iron filings are adsorbed to the outer surface of the No. 1 air cavity 51 or the No. 2 air cavity 52. ​​When the No. 1 air cavity 51 or the No. 2 air cavity 52 absorbs air and rebounds, the No. 1 electromagnet 58 and the No. 2 electromagnet 59 are powered off, and the iron filings that lose magnetic adsorption fall into the collection groove 33 arranged around the movable table 3, thereby improving the collection effect of the iron filings; during the milling process, a part of the iron filings thrown out also fall into the collection groove 33, thereby improving the collection effect of the iron filings.

[0042] The specific workflow is as follows:

[0043] When the CNC is processing, the CNC body 1 mills the mold blank. In order to change the processing position of the mold blank, the movable table 3 moves. During the movement, the movable table 3 hits the No. 1 air cavity 51 or the No. 2 air cavity 52. ​​When the movable table 3 hits the symmetrically arranged No. 2 air cavity 52, the compressed gas generated by the No. 2 air cavity 52 is merged into the No. 1 air cavity 51 through the No. 1 air pipe 53; when the movable table 3 hits the No. 2 air cavity 52 far away from one end of the No. 1 air cavity 51, the compressed gas generated by the No. 2 air cavity 52 is merged into the No. 1 air cavity 51 through the No. 2 air pipe 54. During the impact of the movable table 3, the contact surface between the No. 1 air cavity 51 or the No. 2 air cavity 52 and the movable table 3 is deformed, and the compressed gas is ejected from the nozzle 56 through the outlet pipe 55. The nozzle 56 is arranged obliquely to perform unidirectional jetting toward the movable table 3 and the processing table 4, so as to collect the iron filings generated by the processing, thereby improving the cleaning of the processing table 3 and the movable table 4. cleanliness, thereby improving the accuracy of mold processing; at the same time of impact contact, the No. 1 electromagnet 58 and the No. 2 electromagnet 59 inside the No. 1 air cavity 51 are energized, and the No. 1 electromagnet 58 and the No. 2 electromagnet 59 are magnetic, which can adsorb a part of the iron filings to the outer surface of the No. 1 air cavity 51 or the No. 2 air cavity 52, further realizing the collection of iron filings; at the same time, the No. 1 electromagnet 58 and the No. 2 electromagnet 59 have opposite magnetic poles at the ends that are close to each other after being energized, and through the principle of opposites attracting each other, the No. 1 air cavity 51 or the No. 2 air cavity 52 is deformed faster, and the collision of the No. 1 air cavity 51 or the No. 2 air cavity 52 with the moving platform 3 cooperates with each other, thereby improving the exhaust efficiency of the No. 1 air cavity 51 or the No. 2 air cavity 52, thereby improving the exhaust efficiency of the air outlet pipe 55, thereby accelerating the collection of iron filings, and when the moving platform 3 is away from the No. 1 air cavity 51 or the No. 2 air cavity 52, the No. 1 air cavity 51 or the No. 2 air cavity 52 is restored to its original state through the air inlet 57.

[0044] When the CNC body 1 mills the mold blank, a large amount of cutting fluid is sprayed out, and the fixed table 2 cooperates with the movable table 3, and most of the cutting fluid flows into the No. 2 hole 31. Through the movement of the movable table 3, the iron chips collected by the gas on the movable table 3 and the processing table 4 are shaken and enter the No. 2 hole 31. Through the cooperation with the sprayed cutting fluid, part of the iron chips enter the No. 2 hole 31 with the cutting fluid, which speeds up the efficiency of the iron chips entering the No. 2 hole 31 and improves the collection effect of the iron chips at the dead angle where the mold blank and the processing table 4, the processing table 4 and the movable table 3 are connected; because the No. 1 hole 21 and the No. 2 hole 31 are staggered, when the No. 1 hole 21 and the No. 2 hole 31 are staggered, the cutting fluid and the iron chips collected by the gas enter the No. 2 hole 31; when the No. 1 hole 21 and the No. 2 hole 31 are connected, the cutting fluid flows into the No. 1 hole 21 through the No. 2 hole 31, so that the cutting fluid and the iron chips are filtered and separated, reducing the impurity rate of the cutting fluid, which is conducive to the recycling of the cutting fluid and reduces the maintenance cost of the CNC.

[0045] Hole No. 2 31 is provided with a rounded corner, which cooperates with the movement of the movable table 3 to make it easier for iron chips to enter hole No. 2 31, thereby increasing the speed of the cutting fluid flowing into hole No. 2 31, thereby accelerating the efficiency of the iron chips and cutting fluid collected by the gas entering hole No. 2 31, further improving the collection effect of iron chips at the dead corners where the mold blank is connected to the processing table 4, and the processing table 4 is connected to the movable table 3, and reducing the waste of cutting fluid, thereby improving resource utilization and reducing production and processing costs.

[0046] When iron chips flow into the No. 2 hole 31 along with the cutting fluid, the filter screen 32 in the No. 2 hole 31 blocks the iron chips, thereby improving the filtering effect; and the tiny iron chips are adsorbed by the magnetic block 321. As more and more tiny iron chips are adsorbed, the filtering effect of the cutting fluid is further improved, thereby increasing the reuse rate of the cutting fluid and reducing the production and processing costs.

[0047] During the movement of the mobile platform 3 , it impacts the first air cavity 51 or the second air cavity 52 . During the impact, the mobile platform 3 blocks the air inlet 57 to prevent leakage of compressed gas, thereby affecting the gas outlet rate of the first air cavity 51 or the second air cavity 52 .

[0048] After being filtered by the No. 2 hole 31, the filtered cutting fluid flows into the No. 1 hole 21 through the cooperation between the fixed table 2 and the movable table 3, and finally flows into the collection box 22 at the bottom of the fixed table 2 through the No. 1 hole 21, thereby improving the reuse rate of the cutting fluid and reducing the production and processing cost; through the adsorption effect of the No. 1 electromagnet 58 and the No. 2 electromagnet 59, a part of the iron filings are adsorbed to the outer surface of the No. 1 air cavity 51 or the No. 2 air cavity 52. ​​When the No. 1 air cavity 51 or the No. 2 air cavity 52 absorbs air and rebounds, the No. 1 electromagnet 58 and the No. 2 electromagnet 59 are powered off, and the iron filings that lose magnetic adsorption fall into the collection groove 33 arranged around the movable table 3, thereby improving the collection effect of the iron filings; during the milling process, a part of the iron filings thrown out also fall into the collection groove 33, thereby improving the collection effect of the iron filings.

[0049] The above shows and describes the basic principles, main features and advantages of the present invention. It should be understood by those skilled in the art that the present invention is not limited to the above embodiments. The above embodiments and descriptions are only for explaining the principles of the present invention. Without departing from the spirit and scope of the present invention, the present invention may have various changes and improvements, which fall within the scope of the present invention. The scope of protection of the present invention is defined by the attached claims and their equivalents.

Claims

1. A CNC for processing molds, characterized by: The invention comprises a CNC body (1), a fixed table (2), a movable table (3), a processing table (4) and a cleaning unit (5); the fixed table (2) is fixedly connected to the bottom of the CNC body (1); the movable table (3) is arranged at one end of the fixed table (2) away from the bottom of the CNC body (1); the movable table (3) is slidably connected to the fixed table (2); the processing table (4) is arranged at one end of the movable table (3) away from the fixed table (2); the processing table (4) and the movable table (3) are connected to each other. The processing table (4) is fixedly connected; a metal clamp is fixed on the processing table (4), and the clamp is used to fix the mold blank; the cleaning unit (5) comprises a No. 1 air cavity (51), a No. 2 air cavity (52), a No. 1 air pipe (53), a No. 2 air pipe (54), an air outlet pipe (55) and a nozzle (56); the No. 1 air cavity (51) and the No. 2 air cavity (52) are arranged around the movable table (3); the number of the No. 1 air cavity (51) is one, the number of the No. 2 air cavity (52) is three, and the No. 1 air cavity (51) is ) and the second air cavity (52) have the same structure and are both fixedly connected to the inner wall of the CNC body (1); the symmetrically arranged second air cavity (52) is connected to the first air cavity (51) through the first air pipe (53); the second air cavity (52) arranged at one end away from the first air cavity (51) is connected to the first air cavity (51) through the second air pipe (54); both the first air pipe (53) and the second air pipe (54) are provided with a one-way valve, and the compressed gas in the second air cavity (52) is discharged into the first air cavity (51) through the one-way valve. No. 1 air cavity (51); an air inlet (57) is provided in the No. 1 air cavity (51) and the No. 2 air cavity (52); a No. 1 electromagnet (58) and a No. 2 electromagnet (59) are symmetrically arranged in the No. 1 air cavity (51) and the No. 2 air cavity (52); the magnetic poles of the ends of the No. 1 electromagnet (58) and the No. 2 electromagnet (59) that are close to each other after being energized are opposite; the No. 1 air cavity (51) is connected to the air jet head (56) through an air outlet pipe (55); the air jet head (56) is arranged obliquely; The movable platform (3) strikes the first air cavity (51) or the second air cavity (52) during its movement. When the movable platform (3) strikes the symmetrically arranged second air cavity (52), the compressed gas generated by the second air cavity (52) flows into the first air cavity (51) through the first air pipe (53); when the movable platform (3) strikes the second air cavity (52) at one end away from the first air cavity (51), the compressed gas generated by the second air cavity (52) flows into the first air cavity (51) through the second air pipe (54). During the striking process of the movable platform (3), the contact surface between the first air cavity (51) or the second air cavity (52) and the movable platform (3) is deformed, and the compressed gas is ejected from the ejector head (56) through the air outlet pipe (55). The ejector head 56 is arranged obliquely to eject one-way gas toward the movable platform (3) and the processing platform (4), so as to collect the iron filings generated during the processing.

2. A CNC for processing molds according to claim 1, characterized in that: The fixed platform (2) has a number one hole (21) evenly formed therein; the movable platform (3) has a number two hole (31) evenly formed therein; the number one hole (21) and the number two hole (31) are arranged in a staggered manner; and a filter screen (32) is provided in the number two hole (31).

3. A CNC for processing molds according to claim 2, characterized in that: The second hole (31) has a rounded corner at one end away from the filter screen (32).

4. A CNC for processing molds according to claim 3, characterized in that: A magnetic block (321) is arranged on the filter screen (32); the magnetic block (321) is fixedly connected to the filter screen (32).

5. The CNC for processing molds according to claim 2, characterized in that: The air inlet (57) is arranged in parallel with the moving platform (3).

6. The CNC for processing molds according to claim 5, characterized in that: The movable platform (3) is provided with collecting grooves (33) around it; the bottom of the fixed platform (2) is provided with a collecting box (22); the collecting box (22) is located at the bottom of the CNC body (1).

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