Milling device for numerical control equipment and numerical control equipment

Abstract

The invention belongs to the technical field of milling, and particularly relates to a milling device for numerical control equipment and the numerical control equipment. Comprising a shell and milling cutters, a mounting round seat is arranged on the shell, a mounting and dismounting round groove is formed in the circle center of the mounting round seat, and a clamping block for power transmission is mounted in the mounting round seat; one end of the milling cutter is located in the loading and unloading circular groove and connected with the clamping block, and the other end is used for machining a crawler; an energy-absorbing locking device is also arranged on the mounting round seat; the energy-absorbing locking device comprises an annular channel which is arranged in the mounting round seat, and the centers of circles of the annular channel and the mounting round seat are coaxial; the multiple movable arc plates are located in the annular channel; a brake reverse thrust assembly is arranged on the movable arc plate; the brake reverse thrust assembly comprises brake base plates which are installed on the two sides of the movable arc plate. The stability of the milling cutter during use is improved, the milling cutter is prevented from being damaged due to counteractive impact force, the service life of the milling cutter is prolonged, and the use limitation of the device is reduced.

Description

Technical Field

[0001] The invention belongs to the technical field of milling, and in particular relates to a milling device for numerical control equipment and the numerical control equipment. Background Art

[0002] The crawler track of an excavator is an important traveling component. Its structure and functional design enable it to adapt to various complex terrains and provide stable support and mobility for the excavator. In order to ensure its assembly accuracy, performance and durability during production and processing, the crawler track of the excavator needs to be milled during the processing to ensure the traveling reliability and component durability of the excavator under heavy loads and complex terrains.

[0003] The milling of tracks is all completed by CNC equipment. CNC technology is used to achieve high precision, complex structures and mass production requirements. Usually, the spindle drives the milling cutter to rotate at high speed, and the milling cutter feeds according to the programmed trajectory to realize the processing of the track surface. However, during the processing, when the high-speed rotating milling cutter contacts the track, it will generate impact force, which will cause the workpiece to shake on the one hand, and on the other hand, the impact force will react on the milling cutter. However, the existing device cannot alleviate the impact of this impact force on the milling cutter during use after the milling cutter is installed, resulting in poor stability of the milling cutter during use. It is not only easy to wear and shorten the service life, but also due to the poor installation effect of the milling cutter, the limitations of the device are increased. Summary of the Invention

[0004] In view of the above situation, in order to overcome the defects of the prior art, the present invention provides a milling device for a numerical control device and a numerical control device, which effectively solves the problems in the above background technology.

[0005] To achieve the above-mentioned objectives, the present invention provides the following technical solutions: a milling device for numerical control equipment, comprising a housing and a milling cutter; the housing is provided with a mounting circular seat, the center of which is provided with a loading and unloading circular groove, in which a clamping block for power transmission is installed; one end of the milling cutter is located in the loading and unloading circular groove and connected to the clamping block, and the other end is used for processing crawlers; the mounting circular seat is also provided with an energy-absorbing locking device for reducing the impact force applied to the milling cutter during use; the energy-absorbing locking device includes an annular channel, which is provided in the mounting circular seat, and the centers of the two are coaxial; There are a number of movable arc plates located in the annular channel; the movable arc plates are provided with brake reverse thrust assemblies for preventing the milling cutter from being dislocated when impacted; the brake reverse thrust assemblies include brake base plates installed on both sides of the movable arc plates; A communication notch is provided in the mounting circular seat and is used to connect the loading and unloading circular groove and the annular channel; The rotating sleeve is sleeved on the milling cutter, and the two are rotatably matched; the rotating sleeve is located in the loading and unloading circular groove.

[0006] Preferably, it includes a positioning column, which is connected to the positioning arc plate through and the two are slidably matched; The blocking arc plate is installed at one end of the movable column close to the loading and unloading circular groove; the communicating notch is located at the moving path of the blocking arc plate, and the two are in contact with each other; A movable square column is installed on the side of the blocking arc plate close to the loading and unloading circular groove; a movable square cylinder is slidably connected to the movable square column; A locking clamp is installed at the end of the movable square cylinder away from the movable square column; The rubber airbag is connected to the side of the locking clamping block away from the movable square cylinder; the outer side wall of the rotating sleeve is located at the moving path of the rubber airbag.

[0007] Preferably, it comprises an annular pipe, which is installed on the outer side wall of the mounting circular seat, and the centers of the two are coaxial; the diameter of the annular pipe is larger than the mounting circular seat; An air pump is mounted on the mounting round seat; an active pipeline is mounted on the air pump and connected to the outer wall of the annular pipeline, and the two are in communication; Positioning cylinder; the number and position of the plurality of positioning cylinders correspond to the plurality of movable arc plates; the positioning cylinder is installed on the inner side wall of the annular pipe, and the two are in communication; The positioning cylinder has one end located in the positioning cylinder and the two are slidingly fitted, and the other end is installed with a positioning T-plate; A positioning spring is sleeved on the positioning cylinder; one end of the positioning spring is fixedly connected to the outer wall of the annular pipe, and the other end is fixedly connected to the positioning T-plate. The end away from the positioning cylinder passes through the outer wall of the mounting round seat and is located in the loading and unloading circular groove, and is connected to the positioning arc plate.

[0008] Preferably, it comprises a hollow pipe mounted in the brake substrate; A linkage hose, one end of which is mounted on the inner wall of the annular pipe, and the other end of which passes through the mounting circular seat and is located in the loading and unloading circular groove and is connected to the hollow pipe; the hollow pipe and the annular pipe are connected through the linkage hose; The limiting solid block is fixedly installed on the outer side wall of the hollow pipe.

[0009] Preferably, it comprises a limiting cylinder, one end of which is located in the hollow pipe, and the two are slidably matched; the other end is installed with a limiting block; A limit spring is sleeved on the limit cylinder; one end of the limit spring is fixedly connected to the limit block, and the other end is fixedly connected to the limit block; a rubber buffer pad is installed on the limit block, and the side that blocks the arc plate from moving away from the milling cutter is located in the movement path of the rubber buffer pad; The limiting circular block is installed in the hollow pipe; the limiting circular block is also provided with a penetrating rectangular square groove.

[0010] Preferably, it includes a positioning spring, which is located in the positioning square tube; one end of the positioning spring is fixedly connected to the inner bottom surface of the positioning square tube, and the other end is fixedly connected to the positioning square column; A connecting hose, one end of which is installed in the movable square cylinder and the other end is installed in the rubber airbag; the movable square cylinder and the rubber airbag are connected through the connecting hose; The retaining rack is installed on the side of the blocking arc plate close to the moving arc plate.

[0011] Preferably, it comprises two locking threaded shafts, which are symmetrically mounted on the side surfaces of the movable arc plate; A locking gear is mounted on the locking threaded shaft; a retaining rack is located between the two locking gears and meshes with each other; The locking horizontal block is threadedly connected to the locking threaded shaft; the positioning arc plate is provided with a guide slide column which is connected to the locking horizontal block through and the two are slidably matched.

[0012] Preferably, it comprises a bent long rod, one end of which is mounted on the locking horizontal block, and the other end of which is mounted with a locking plug-in block; the locking plug-in block passes through the hollow pipe and is connected to the rectangular square groove.

[0013] Preferably, the annular channel is composed of two standard circles, and the diameters of both circles are larger than the loading and unloading circular groove; the positioning column is also provided with an extrusion spring, one end of the extrusion spring is fixedly connected to the positioning arc plate, and the other end is fixedly connected to the blocking arc plate.

[0014] The present invention also provides a numerical control device, which is used for a milling device of the numerical control device.

[0015] From the above, it can be seen that the milling device and CNC equipment provided by the present invention have the effect of improving the stability of the milling cutter during use, so as to avoid the reaction force generated by the high-speed rotating milling cutter contacting the crawler during the crawler processing, which causes the workpiece to shake and act on the milling cutter to cause it to shake, so that the milling cutter can alleviate the impact of this impact force on the milling cutter during use after being installed, thereby improving the stability of the milling cutter during use, avoiding damage to the milling cutter caused by the impact of the reaction force, and increasing the service life of the milling cutter, thereby further increasing the installation and use effect of the milling cutter, so that the limitations of the device during use and milling can be reduced. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] The accompanying drawings are used to provide further understanding of the present invention and constitute a part of the specification. They are used to explain the present invention together with the embodiments of the present invention and do not constitute a limitation of the present invention.

[0017] In the attached figure: Figure 1 This is one of the overall structural diagrams of the present invention; Figure 2 This is a schematic diagram of the annular pipeline structure of the present invention; Figure 3 This is a cross-sectional exploded view of the rotating sleeve of the present invention; Figure 4 This is a cross-sectional view of the movable square cylinder of the present invention; Figure 5 This is the second schematic diagram of the overall structure of the present invention; Figure 6 It is a cross-sectional view of the positioning cylinder of the present invention; Figure 7 This is a cross-sectional view of the hollow pipe of the present invention; Figure 8 This is a schematic diagram of the air pump structure of the present invention; Figure 9 This is a schematic diagram of the structure of the blocking arc plate of the present invention; Figure 10 This is a cross-sectional view of the annular channel of the present invention; Figure 11 This is a cross-sectional view of the limiting circular block of the present invention; Figure 12 Schematic diagram of the milling cutter structure of the present invention; In the figure: 1. Housing; 2. Milling cutter; 3. Mounting round seat; 4. Loading and unloading circular groove; 5. Annular channel; 6. Positioning arc plate; 7. Braking base plate; 8. Connecting notch; 9. Rotating sleeve; 10. Positioning column; 11. Blocking arc plate; 12. Positioning square column; 13. Positioning square cylinder; 14. Locking clamp; 15. Rubber airbag; 16. Annular pipe; 17. Air pump; 18. Active pipe; 19. Positioning cylinder; 20. Positioning cylinder; 21. Positioning T-plate; 22. Positioning spring; 23. Hollow pipe; 24. Linking hose; 25. Limiting block; 26. Limiting cylinder; 27. Limiting block; 28. Limiting spring; 29. ​​Rubber buffer pad; 30. Limiting block; 31. Rectangular square groove; 32. Positioning spring; 33. Connecting hose; 34. Retaining rack; 35. Locking threaded shaft; 36. Locking gear; 37. Locking cross block; 38. Guide slide; 39. Bending long rod; 40. Locking plug; 41. Extrusion spring. DETAILED DESCRIPTION

[0018] 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; based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the present invention.

[0019] Embodiment 1, by Figures 1 to 12The present invention includes a housing 1 and a milling cutter 2. The housing 1 is provided with a mounting circular seat 3, and a loading and unloading circular groove 4 is provided at the center of the mounting circular seat 3, in which a clamping block for power transmission is installed. One end of the milling cutter 2 is located in the loading and unloading circular groove 4 and is connected to the clamping block, and the other end is used for processing the crawler. The mounting circular seat 3 is also provided with an energy-absorbing locking device, which is used to reduce the impact force applied to the milling cutter 2 during use. The energy-absorbing locking device includes an annular channel 5, which is provided in the mounting circular seat 3, and the centers of the two are coaxial. A communication notch 8 is provided in the mounting circular seat 3 and is used to connect the loading and unloading circular groove 4 and the annular channel 5; The rotating sleeve 9 is sleeved on the milling cutter 2, and the two are rotated together; the rotating sleeve 9 is located in the loading and unloading circular groove 4; The movable column 10 is connected to the movable arc plate 6 through which the two are slidably matched; The blocking arc plate 11 is installed at one end of the movable column 10 close to the loading and unloading circular groove 4; the communicating notch 8 is located in the moving path of the blocking arc plate 11, and the two are in contact with each other; A movable square column 12 is installed on the side of the blocking arc plate 11 close to the loading and unloading circular groove 4; a movable square cylinder 13 is slidably connected to the movable square column 12; A locking clamp 14 is mounted on the end of the movable square cylinder 13 away from the movable square column 12; The rubber airbag 15 is connected to the side of the locking clamp 14 away from the movable square cylinder 13; the outer wall of the rotating sleeve 9 is located in the moving path of the rubber airbag 15; An annular pipe 16 is mounted on the outer side wall of the mounting circular seat 3, and the centers of the two are coaxial; the diameter of the annular pipe 16 is larger than the mounting circular seat 3; An air pump 17 is mounted on the mounting base 3; an active pipe 18 is mounted on the air pump 17 and connected to the outer wall of the annular pipe 16, and the two are in communication; Positioning cylinder 19; the number and position of the plurality of positioning cylinders 19 correspond to the plurality of movable arc plates 6; the positioning cylinder 19 is mounted on the inner wall of the annular pipe 16, and the two are in communication; The positioning cylinder 20 has one end located in the positioning cylinder 19 and the two are slidably fitted, and the other end is installed with a positioning T-plate 21; A positioning spring 22 is sleeved on the positioning cylinder 20; one end of the positioning spring 22 is fixedly connected to the outer wall of the annular pipe 16, and the other end is fixedly connected to the positioning T-plate 21. The end away from the positioning cylinder 20 passes through the outer wall of the mounting round seat 3 and is located in the loading and unloading circular groove 4, and is connected to the positioning arc plate 6; A positioning spring 32 is located in the positioning square cylinder 13; one end of the positioning spring 32 is fixedly connected to the inner bottom surface of the positioning square cylinder 13, and the other end is fixedly connected to the positioning square column 12; A connecting hose 33, one end of which is installed in the movable square cylinder 13 and the other end is installed in the rubber airbag 15; the movable square cylinder 13 and the rubber airbag 15 are connected through the connecting hose 33; The retaining rack 34 is mounted on the side of the blocking arc plate 11 close to the movable arc plate 6; The annular channel 5 is composed of two standard circles, and the diameter of each circle is larger than that of the loading and unloading circular groove 4. The positioning cylinder 10 is also provided with an extrusion spring 41, one end of which is fixedly connected to the positioning arc plate 6, and the other end is fixedly connected to the blocking arc plate 11. When the device is milling the crawler track, the milling cutter 2 is installed in the loading and unloading circular groove 4, and the several locking clamps 14 on the energy-absorbing locking device contact the rotating sleeve 9, so that the milling cutter 2 is fixedly connected to the mounting circular seat 3, and the installation operation of the milling cutter 2 is completed; at the same time, the milling cutter 2 at the rotating sleeve 9 is installed at the clamping block, and the milling cutter 2 can be driven to rotate rapidly by the rotating clamping block to perform milling operations on the crawler track; the specific operation steps are: by starting the air pump 17, the generated gas is sent into the annular pipe 16 through the active pipe 18, and then enters the several positioning cylinders 19 and acts on the positioning cylinder 20, thereby forcing it to move, so that the positioning cylinder 20 is limited and moved at the positioning cylinder 19, so that the positioning spring 22 is in a buffering state, thereby driving the positioning T plate 21 to move, The locking clamps 14 are moved by the locking plate 14 under the action of the movable column 10, the blocking arc plate 11, the movable square column 12 and the movable square cylinder 13, so that the plurality of locking clamps 14 pass through the connecting notch 8 and move in the direction close to the milling cutter 2, and contact the side wall of the rotating sleeve 9 on the milling cutter 2, so that the milling cutter 2 is clamped and set without affecting its rotation, that is, the plurality of locking clamps 14 move close to the rotating sleeve 9 and contact, so as to limit its position and avoid the milling cutter 2 from being dislocated when in use. Moreover, the milling cutter 2 is clamped by the plurality of locking clamps 14 in a self-centering manner, so as to avoid the milling cutter 2 not being clamped at the center of the circle and affecting the processing effect, thereby reducing the limitations of the device when in use. When the locking clamp 14 has been in contact with the rotating sleeve 9 and cannot move further, the continuous output of the air pump 17 makes the positioning T plate 21 continue to move, thereby driving the positioning arc plate 6 on the positioning T plate 21 to continue to move. It is worth mentioning that since the strength of the extrusion spring 41 is greater than the positioning spring 32, the positioning arc plate 6 that continues to move will drive the blocking arc plate 11 to continue to move under the action of the positioning column 10 and the positioning spring 32, so that the positioning square column 12 on it will move within the positioning square cylinder 13, so that the positioning spring 22 is in a buffer state, which can continuously apply pressure to the locking clamp 14, so that several locking clamps 1 The friction and strength of the contact between the 4 and the rotating sleeve 9 are increased, which further improves the clamping and installation effect of the milling cutter 2, avoids dislocation and instability caused by excessive impact during use, and thus improves the use effect of the device; at the same time, when the movable square column 12 moves in the movable square cylinder 13, it squeezes the space in the movable square cylinder 13, so that the gas in it enters the rubber airbag 15 through the connecting hose 33. When the locking clamp 14 installs and clamps the milling cutter 2, the rubber airbag 15 on the locking clamp 14 contacts the side wall of the rotating sleeve 9 on the milling cutter 2, which is used to improve the contact between the locking clamp 14 and the rotating sleeve 9. The friction force is reduced, so that the dislocation of the clamped milling cutter 2 during use is avoided, thereby improving the safety of the milling cutter 2 during use after being installed; at the same time, the gas entering the rubber airbag 15 will cause it to expand, which is used to further compress the gap between the locking clamp 14 and the rotating sleeve 9, avoiding the gap between the two being too large or too much affecting the stability of the milling cutter 2 during use. At the same time, the expanded rubber airbag 15 will bring a partial buffering effect. When the milling cutter 2 becomes unstable during use and causes it to shake, the buffering performance brought by the expanded rubber airbag 15 and the extrusion spring 41 can offset the above-mentioned milling cutter 2 being unstable during use. The impact force generated by the shaking can improve the stability of the milling cutter 2 during use, and avoid the impact force generated by the high-speed rotating milling cutter 2 contacting the crawler during the crawler processing, which causes the reaction force generated when the workpiece shakes to act on the milling cutter 2 to make it shake, so that the milling cutter 2 can alleviate the impact of this impact force on the milling cutter 2 during use after being installed, thereby improving the stability of the milling cutter 2 during use, avoiding the milling cutter 2 being damaged by the impact of the reaction force, and increasing the service life of the milling cutter 2, thereby further increasing the installation and use effect of the milling cutter 2, and reducing the limitations of the device during use and milling.

[0020] In this embodiment, the movable arc plates 6 are provided in a plurality and are located in the annular channel 5. The movable arc plates 6 are provided with a brake reverse thrust assembly for preventing the milling cutter 2 from being dislocated when impacted. The brake reverse thrust assembly includes a brake base plate 7, which is installed on both sides of the movable arc plate 6. A hollow pipe 23 mounted in the brake base plate 7; A linkage hose 24 is installed at one end on the inner wall of the annular pipe 16, and the other end passes through the mounting round seat 3 and is located in the loading and unloading circular groove 4, and is connected to the hollow pipe 23; the hollow pipe 23 and the annular pipe 16 are connected through the linkage hose 24; A limiting fixed block 25 is fixedly mounted on the outer wall of the hollow pipe 23; The limiting cylinder 26 has one end located in the hollow pipe 23 and the two are slidably fitted; the other end is installed with a limiting block 27; A limit spring 28 is sleeved on the limit cylinder 26; one end of the limit spring 28 is fixedly connected to the limit block 25, and the other end is fixedly connected to the limit block 27; a rubber buffer pad 29 is installed on the limit block 27, and the side of the arc plate 11 that blocks the milling cutter 2 is located in the movement path of the rubber buffer pad 29; The limiting circular block 30 is installed in the hollow pipe 23; the limiting circular block 30 is also provided with a rectangular square groove 31 passing through; Two locking threaded shafts 35 are symmetrically mounted on the side of the movable arc plate 6; The locking gear 36 is mounted on the locking threaded shaft 35; the retaining rack 34 is located between the two locking gears 36 and meshes with each other; The locking block 37 is threadedly connected to the locking threaded shaft 35; the movable arc plate 6 is provided with a guide slide 38 which is connected to the locking block 37 and the two slide together; A bent long rod 39, one end of which is mounted on the locking horizontal block 37, and the other end of which is mounted with a locking plug 40; the locking plug 40 passes through the hollow pipe 23 and is connected to the rectangular square groove 31; When the energy-absorbing locking device clamps the milling cutter 2, the movement of the positioning T-plate 21 only drives the positioning spring 32 to deform, which is used to enhance the contact and clamping strength between the locking clamp 14 and the rotating sleeve 9. At the same time, the extrusion spring 41, which is stronger than the positioning spring 32, is not deformed under the operation of the energy-absorbing locking device; since the positioning spring 32 is already in the maximum deformation state when the milling cutter 2 is in use, and the clamping of the milling cutter 2 is performed by a plurality of locking clamps 14, when the milling cutter 2 generates an impact force on the crawler when in use, causing the workpiece to shake, the shaking workpiece will react the impact force to the milling cutter 2 used for operation, causing it to vibrate and cause deviation. A plurality of locking clamps 14 are distributed around the milling cutter 2, that is, no matter the direction of the milling cutter 2, Any deviation in any direction will drive the contact locking clamp 14 to move, so that it drives the blocking arc plate 11 to move under the action of the positioning square cylinder 13, the positioning square column 12 and the positioning spring 32. Since the positioning arc plate 6 is also limited to the current position by the positioning T plate 21 and cannot move, the distance between the positioning arc plate 6 and the blocking arc plate 11 becomes smaller, so that the positioning column 10 on the blocking arc plate 11 is limited to move at the positioning arc plate 6, so that the squeezing spring 41 is in a buffering state. The buffering performance brought by the squeezing spring 41 can offset the impact energy received by the milling cutter 2 during use, avoid the impact force on the milling cutter 2 causing damage to it and the device, thereby improving the service life of the milling cutter 2 and the use effect of the device, and at the same time making the movable positioning arc plate The retaining rack 34 on 6 moves and engages with the two locking gears 36 to rotate, so that the locking threaded shaft 35 on it can be rotated, so that the threaded locking cross block 37 is limited and moved at the guide slide 38, and the locking plug block 40 is driven to move by the bent long rod 39, so that it is no longer connected to the rectangular square groove 31, so that the limiting state in the hollow pipe 23 is released, so that the gas head in the annular pipe 16 enters the hollow pipe 23 through the linkage hose 24 and acts on the limiting cylinder 26, so that it is limited and moved at the hollow pipe 23, so that the limiting spring 28 is in a buffer state, so that the limiting solid block 25 on the limiting cylinder 26 is moved toward the direction of the blocking arc plate 11 and contacts it, so as to limit the movement of the blocking arc plate 11. , to avoid the blocking arc plate 11 from moving too much, which would reduce the connection strength between the locking clamp 14 and the milling cutter 2, so that the device can prevent the milling cutter 2 from being dislocated when unloading the impacted milling cutter 2, reducing the limitations of the device during use, and further improving the use effect of the milling cutter 2 after installation; it is worth mentioning that the buffering performance brought by the rubber buffer pad 29 can further reduce the impact force when the limiting block 27 contacts the blocking arc plate 11, so as to further eliminate the impact force caused by the milling cutter 2 on the blocking arc plate 11, and at the same time increase the friction between the limiting block 27 and the blocking arc plate 11, avoiding the dislocation phenomenon when the two are in contact, thereby improving the stability of the device during use.

[0021] This embodiment further provides a numerical control device, which includes the milling device for numerical control devices in the above embodiment.

[0022] It should be noted that, in this document, relational terms such as first and second, etc., are used only to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. Moreover, the terms "comprises," "comprising," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that includes a list of elements includes not only those elements but also other elements not explicitly listed, or elements inherent to such process, method, article, or apparatus.

[0023] While embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions, and variations may be made to these embodiments without departing from the principles and spirit of the invention, and that the scope of the invention is defined by the appended claims and their equivalents.

Claims

1. A milling device for numerical control equipment, comprising a housing and a milling cutter; characterized in that: The housing is provided with a mounting circular seat, and a loading and unloading circular groove is provided at the center of the mounting circular seat, in which a clamping block for power transmission is installed; one end of the milling cutter is located in the loading and unloading circular groove and connected to the clamping block, and the other end is used for processing the crawler; the mounting circular seat is also provided with an energy-absorbing locking device, which is used to reduce the impact force applied to the milling cutter during use; the energy-absorbing locking device includes an annular channel, which is provided in the mounting circular seat, and the centers of the two are coaxial; There are a number of movable arc plates located in the annular channel; the movable arc plates are provided with brake reverse thrust assemblies for preventing the milling cutter from being dislocated when impacted; the brake reverse thrust assemblies include brake base plates installed on both sides of the movable arc plates; A communication notch is provided in the mounting circular seat and is used to connect the loading and unloading circular groove and the annular channel; The rotating sleeve is sleeved on the milling cutter, and the two are rotatably matched; the rotating sleeve is located in the loading and unloading circular groove.

2. A milling device for a numerical control device according to claim 1, characterized in that: It includes a positioning column, which is connected to the positioning arc plate through and the two are slidably matched; The blocking arc plate is installed at one end of the movable column close to the loading and unloading circular groove; the communicating notch is located at the moving path of the blocking arc plate, and the two are in contact with each other; A movable square column is installed on the side of the blocking arc plate close to the loading and unloading circular groove; a movable square cylinder is slidably connected to the movable square column; A locking clamp is installed at the end of the movable square cylinder away from the movable square column; The rubber airbag is connected to the side of the locking clamping block away from the movable square cylinder; the outer side wall of the rotating sleeve is located at the moving path of the rubber airbag.

3. A milling device for numerical control equipment according to claim 2, characterized in that: It includes an annular pipe, which is installed on the outer side wall of the mounting circular seat, and the centers of the two are coaxial; the diameter of the annular pipe is larger than the mounting circular seat; An air pump is mounted on the mounting round seat; an active pipeline is mounted on the air pump and connected to the outer wall of the annular pipeline, and the two are in communication; Positioning cylinder; the number and position of the plurality of positioning cylinders correspond to the plurality of movable arc plates; the positioning cylinder is installed on the inner side wall of the annular pipe, and the two are in communication; The positioning cylinder has one end located in the positioning cylinder and the two are slidingly fitted, and the other end is installed with a positioning T-plate; A positioning spring is sleeved on the positioning cylinder; one end of the positioning spring is fixedly connected to the outer wall of the annular pipe, and the other end is fixedly connected to the positioning T-plate. The end away from the positioning cylinder passes through the outer wall of the mounting round seat and is located in the loading and unloading circular groove, and is connected to the positioning arc plate.

4. The milling device for a numerical control device according to claim 1, characterized in that: It includes a hollow pipe mounted in the brake base plate; A linkage hose, one end of which is mounted on the inner wall of the annular pipe, and the other end of which passes through the mounting circular seat and is located in the loading and unloading circular groove and is connected to the hollow pipe; the hollow pipe and the annular pipe are connected through the linkage hose; The limiting solid block is fixedly installed on the outer side wall of the hollow pipe.

5. The milling device for numerical control equipment according to claim 4, characterized in that: It includes a limiting cylinder, one end of which is located in the hollow pipe and the two are slidably matched; the other end is equipped with a limiting block; A limit spring is sleeved on the limit cylinder; one end of the limit spring is fixedly connected to the limit block, and the other end is fixedly connected to the limit block; a rubber buffer pad is installed on the limit block, and the side that blocks the arc plate from moving away from the milling cutter is located in the movement path of the rubber buffer pad; The limiting circular block is installed in the hollow pipe; the limiting circular block is also provided with a penetrating rectangular square groove.

6. The milling device for numerical control equipment according to claim 2, characterized in that: It includes a positioning spring, which is located in the positioning square tube; one end of the positioning spring is fixedly connected to the inner bottom surface of the positioning square tube, and the other end is fixedly connected to the positioning square column; A connecting hose, one end of which is installed in the movable square cylinder and the other end is installed in the rubber airbag; the movable square cylinder and the rubber airbag are connected through the connecting hose; The retaining rack is installed on the side of the blocking arc plate close to the moving arc plate.

7. The milling device for numerical control equipment according to claim 5, characterized in that: It includes two locking threaded shafts, which are symmetrically installed on the side of the movable arc plate; A locking gear is mounted on the locking threaded shaft; a retaining rack is located between the two locking gears and meshes with each other; The locking horizontal block is threadedly connected to the locking threaded shaft; the positioning arc plate is provided with a guide slide column which is connected to the locking horizontal block through and the two are slidably matched.

8. The milling device for numerical control equipment according to claim 7, characterized in that: It comprises a bent long rod, one end of which is mounted on a locking horizontal block, and the other end of which is mounted with a locking plug-in block; the locking plug-in block passes through a hollow pipe and is connected to a rectangular square groove.

9. The milling device for numerical control equipment according to claim 2, characterized in that: The annular channel is composed of two standard circles, and the diameters of both circles are larger than the loading and unloading circular groove; the positioning column is also provided with an extrusion spring, one end of the extrusion spring is fixedly connected to the positioning arc plate, and the other end is fixedly connected to the blocking arc plate.

10. A numerical control device, characterized in that: The numerical control device includes the milling device for numerical control device according to any one of claims 1 to 9.

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