Numerical control machine tool and brake roller machining method

Abstract

The invention discloses a numerical control machine tool and a brake roller machining method, and relates to the field of intelligent manufacturing equipment. The translation mechanism and the two rotary positioning mechanisms are arranged on the machine body of the numerical control machine tool, one rotary positioning mechanism is fixedly installed at one end of the machine body, and the other rotary positioning mechanism is fixedly installed on the translation mechanism. Then, the translation mechanism drives the rotary positioning mechanism on the translation mechanism to translate towards the other group of rotary positioning mechanisms, so that the two rotary positioning mechanisms are closed to respectively clamp the two ends of the part, and the original rotary positioning mechanism loosens the clamping of the part; and finally, numerical control machining is carried out on the unmachined end of the part, so that through cooperation of the translation mechanism and the two rotary positioning mechanisms, edge changing clamping of the part can be automatically completed, and the numerical control machining efficiency of the part is improved.

Description

Technical Field

[0001] This invention belongs to the field of intelligent manufacturing equipment, and specifically relates to a CNC machine tool and a method for machining brake rollers. Background Technology

[0002] CNC machine tools, short for numerical control machine tools, are automated machine tools equipped with a program control system. They can automatically process parts through this system. CNC machine tools effectively solve the problems of machining complex, precise, small-batch, and multi-variety parts, and are a flexible and highly efficient type of automated machine tool.

[0003] In existing technologies, when machining shaft-type and disc-type parts using CNC machine tools, one end of the part is usually clamped and positioned by a positioning spindle. If both ends of the part need to be CNC machined, the part needs to be removed from the CNC machine tool after machining the main body and exposed end. Then, the positioning spindle is used to clamp and position the machined end of the part to facilitate CNC machining of the other end. This requires two clamping operations during the CNC machining process, which reduces the efficiency of CNC machining. Summary of the Invention

[0004] In view of the problems in the related technologies, the present invention proposes a CNC machine tool and a method for machining brake rollers to overcome the above-mentioned technical problems existing in the existing related technologies.

[0005] To solve the above-mentioned technical problems, the present invention is achieved through the following technical solution:

[0006] This invention relates to a CNC machine tool, including a bed, on which a translation mechanism and two sets of rotary positioning mechanisms are provided. One set of rotary positioning mechanisms is fixedly installed at one end of the bed, and the other set of rotary positioning mechanisms is fixedly installed on the translation mechanism. The translation mechanism can drive the rotary positioning mechanism thereon to translate left and right to adjust the distance between the two sets of rotary positioning mechanisms.

[0007] The automated clamping assembly, rotary drive assembly, and turntable are described. The automated clamping assembly is installed on the inner end of the turntable and can clamp and position the end of the part to be processed. The rotary drive assembly can drive the turntable to rotate, so that the turntable drives the automated clamping assembly and the part to rotate synchronously.

[0008] The translation mechanism includes a slide rail, a translation drive assembly, and a locking assembly. The slide rail is fixedly installed on the bed, and a sliding seat is slidably installed on the slide rail. The rotary positioning mechanism is fixedly installed on the top of the sliding seat. The translation drive assembly can drive the sliding seat to translate along the slide rail, thereby driving the rotary positioning mechanism on the sliding seat to move parallel. The locking assembly can automatically lock and fix the sliding seat when the rotary positioning mechanism on the sliding seat moves to the machining station.

[0009] Furthermore, the automated clamping assembly includes multiple sliding bases, multiple gripper positioning seats, and an opening and closing drive unit. The multiple sliding bases are circumferentially distributed and slidably mounted on the turntable. Multiple equidistant downward inclined guide strips are fixedly mounted on one side of each sliding base. The gripper positioning seat is located on one side of the sliding base, and an upward inclined guide strip that slides and engages with the downward inclined guide strips is fixedly mounted on one side of the gripper positioning seat. A gripper is fixedly mounted on the other side of the gripper positioning seat. The opening and closing drive unit can drive the sliding base to slide left and right along the tangent direction of the turntable. At this time, the sliding base can be driven by the sliding guidance of the downward and upward inclined guide strips to move the gripper positioning seat and gripper on it toward or away from the center of the turntable.

[0010] Furthermore, a limiting block is fixedly installed on the side of the sliding base opposite to the downward inclined guide bar. A limiting groove is provided inside the turntable that can slide and engage with the limiting block. A guide groove is also provided on the surface of the turntable that can slide and engage with the gripper positioning seat. One end of the guide groove is set towards the center of the turntable.

[0011] Furthermore, the opening and closing drive unit includes a clamping cylinder and multiple guide seats, each of which corresponds to a multiple sliding base, and the guide seat is fixedly installed at one end of the corresponding sliding base. An inclined guide groove is provided on the inner side of the guide seat.

[0012] The clamping cylinder is fixedly installed on the outer end of the turntable. The telescopic end of the clamping cylinder extends into the center hole of the turntable, and a slider is fixedly installed on the telescopic end of the clamping cylinder and slidably locked in the center hole of the turntable. A plurality of inclined guide blocks corresponding one-to-one with the inclined guide grooves are fixedly installed on the outer ring of one end of the slider, and the ends of the inclined guide blocks are slidably locked in the corresponding inclined guide grooves.

[0013] Furthermore, the rotary drive assembly includes a rotary drive motor and a driven wheel. The rotary drive motor is fixedly installed on one side of the outer end of the turntable, and a drive wheel is drivenly installed at the output end of the rotary drive motor. The driven wheel is fixedly installed on the outer end of the turntable, and the drive wheel and the driven wheel are connected by a drive belt.

[0014] Furthermore, the translation drive assembly includes a translation drive motor and multiple lead screws. The multiple lead screws are rotatably mounted inside the slide rail, and the multiple lead screws are threadedly connected to the sliding seat. The translation drive motor is fixedly mounted at the end of the slide rail, and synchronous pulleys are fixedly mounted at the output end of the translation drive motor and the end of the lead screws. The multiple synchronous pulleys are connected to each other by a synchronous belt drive.

[0015] Furthermore, the locking assembly includes a positioning rod and a lifting drive unit. The positioning rod is vertically mounted on the sliding seat, and a lower sliding seat is movably inserted into the lower end of the positioning rod. The lower sliding seat is slidably mounted on the lower end of the slide rail. The lifting drive unit can drive the lower sliding seat to move upward when the sliding seat moves to the processing station, so that the lower sliding seat and the sliding seat are clamped and locked above and below the slide rail.

[0016] Furthermore, an upper end plate that abuts against the sliding seat is fixedly installed at the top of the positioning rod, and a lower end plate is fixedly installed at the bottom of the lower sliding seat.

[0017] The lifting drive unit includes a moving wedge block and a pushing wedge block. The moving wedge block is fixedly installed at the bottom end of the sliding seat, and the pushing wedge block is installed at the bottom end of the slide rail. The pushing wedge block can push the moving wedge block upward through the top inclined surface.

[0018] Furthermore, a limiting slide bar is fixedly installed on the side of the pushing wedge block, and a limiting slide groove is provided on the inner wall of the slide rail to slide and engage with the limiting slide bar. An adjusting locking cylinder is fixedly installed at the end of the slide rail, and the telescopic end of the adjusting locking cylinder is fixedly connected to the end of the pushing wedge block.

[0019] This invention also discloses a method for processing brake rollers, the specific steps of which are as follows:

[0020] First, one end of the blank required for machining the brake roller is clamped in the automated clamping assembly of the rotary positioning mechanism on the machine bed. Then, the rotary drive assembly within the rotary positioning mechanism drives the turntable to rotate, causing the turntable to drive the automated clamping assembly and the blank to rotate synchronously. The machining tool on the machine bed performs CNC machining on the rotating blank. After one end of the blank is machined, the translation drive assembly drives the sliding seat to translate along the slide rail, causing the rotary positioning mechanism on the sliding seat to move parallel to the rotary positioning mechanism on the machine bed. This causes the two sets of rotary positioning mechanisms to gradually move closer until the sliding seat drives its rotary positioning mechanism to move towards the blank. One end of the blank is CNC machined, and the rotary positioning mechanism clamps and positions the machined end of the blank through the automated clamping component. Then, the rotary positioning mechanism on the bed releases the clamp on the blank, allowing the blank to be transferred from one set of rotary positioning mechanisms to another. Then, the translation drive component drives the sliding seat to move and reset along the slide rail in the opposite direction, thereby driving the rotary positioning mechanism and the blank on it to move and reset until the rotary positioning mechanism and the blank move to the machining station. The locking component locks and fixes the sliding seat. Then, the rotary drive component drives the turntable, the automated clamping component and the blank to rotate, so as to perform CNC machining on the other end of the blank, forming a brake roller.

[0021] The present invention has the following beneficial effects:

[0022] 1. In this invention, a translation mechanism and two sets of rotary positioning mechanisms are provided on the bed of a CNC machine tool. One set of rotary positioning mechanisms is fixedly installed at one end of the bed, and the other set of rotary positioning mechanisms is fixedly installed on the translation mechanism. When CNC machining a part, the part is first clamped in one set of rotary positioning mechanisms to perform CNC machining on the main body and one end of the part. Then, the rotary positioning mechanism on the translation mechanism is driven to translate to the other set of rotary positioning mechanisms, so that the two rotary positioning mechanisms come together and clamp the two ends of the part respectively. Then, the original rotary positioning mechanism is released from clamping the part. Finally, the unmachined end of the part is CNC machined. Thus, through the cooperation of the translation mechanism and the two sets of rotary positioning mechanisms, the changing clamping of the part can be completed automatically, so that the CNC machining process of the part can be completed in one clamping, which greatly improves the CNC machining efficiency of the part.

[0023] 2. The rotary positioning mechanism of the present invention includes an automated clamping component and a rotary driving component. The automated clamping component can automatically complete the clamping and loosening of the part, which not only makes the clamping process of the part more convenient and faster, but also facilitates the two sets of rotary positioning mechanisms to cooperate in automatically completing the clamping of the part by changing sides. The rotary driving component can drive the part to rotate, so as to facilitate the machine tool to perform CNC machining on the surface of the part.

[0024] 3. In this invention, the translation drive component can drive the sliding seat to translate along the slide rail, thereby driving the rotary positioning mechanism on the sliding seat to move in parallel for position adjustment. When the sliding seat and the rotary positioning mechanism on it move to the machining station, the locking component can automatically lock and fix the sliding seat, thereby improving the stability of the installation of the sliding seat and the rotary positioning mechanism, preventing the rotary positioning mechanism from causing the part to vibrate and shift during the CNC machining of the part, which is beneficial to improving the CNC machining accuracy of the part.

[0025] Of course, any product implementing this invention does not necessarily need to achieve all of the advantages described above at the same time. Attached Figure Description

[0026] To more clearly illustrate the technical solutions of the embodiments of the invention, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the invention. For those skilled in the art, the drawings can be obtained from these drawings without creative effort.

[0027] Figure 1 This is one of the three-dimensional structural schematic diagrams of the CNC machine tool of the present invention;

[0028] Figure 2 For the present invention Figure 1 A magnified schematic diagram of the structure at point A;

[0029] Figure 3 This is the second three-dimensional structural schematic diagram of the CNC machine tool of the present invention;

[0030] Figure 4 For the present invention Figure 3 A magnified schematic diagram of the structure at point B;

[0031] Figure 5 This is the third three-dimensional structural schematic diagram of the CNC machine tool of the present invention;

[0032] Figure 6 For the present invention Figure 5 A magnified schematic diagram of the structure at point C;

[0033] Figure 7 This is the fourth three-dimensional structural schematic diagram of the CNC machine tool of the present invention;

[0034] Figure 8 For the present invention Figure 7 A magnified schematic diagram of the structure at point D;

[0035] Figure 9 This is a schematic diagram of the front structure of the CNC machine tool of the present invention;

[0036] Figure 10 For the present invention Figure 9 A magnified schematic diagram of the structure at point E;

[0037] Figure 11 This is a schematic diagram of the structure on the right side of the CNC machine tool of the present invention;

[0038] Figure 12 For the present invention Figure 11 A magnified schematic diagram of the structure at point F.

[0039] In the diagram: 1. Bed; 2. Rotary positioning mechanism; 21. Turntable; 22. Gripper; 23. Rotary drive motor; 24. Transmission wheel; 25. Transmission belt; 26. Driven wheel; 27. Clamping cylinder; 28. Slider; 29. ​​Inclined guide block; 210. Limiting groove; 211. Limiting block; 212. Guide seat; 213. Inclined guide groove; 214. Sliding base; 215. Gripper positioning seat; 216. Downward tilt 217. Guide bar; 3. Inclined guide bar; 4. Translation mechanism; 5. Sliding seat; 6. Lead screw; 7. Slide rail; 8. Synchronous pulley; 9. Synchronous belt; 10. Translation drive motor; 11. Adjusting locking cylinder; 22. Lower sliding seat; 33. Positioning rod; 44. Upper end plate; 55. Lower end plate; 66. Moving wedge block; 77. Pushing wedge block; 88. Limiting slide groove; 98. Limiting slide bar. Detailed Implementation

[0040] The technical solutions of the embodiments of the invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the invention, and not all embodiments. Based on the embodiments of the invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the invention.

[0041] In the description of this invention, it should be understood that the terms "opening", "upper", "lower", "top", "middle", "inner", etc., which indicate orientation or positional relationship, are only for the convenience of describing the invention and simplifying the description, and do not indicate or imply that the components or elements referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation on the invention.

[0042] Example 1

[0043] Please see Figures 1-3As shown, this invention is a CNC machine tool, including a bed 1, on which a translation mechanism 3 and two sets of rotary positioning mechanisms 2 are arranged. One set of rotary positioning mechanisms 2 is fixedly installed at one end of the bed 1, and the other set of rotary positioning mechanisms 2 is fixedly installed on the translation mechanism 3. The translation mechanism 3 can drive the rotary positioning mechanisms 2 on it to translate left and right to adjust the distance between the two sets of rotary positioning mechanisms 2; an automatic clamping assembly, a rotary drive assembly, and a turntable 21. The automatic clamping assembly is installed on the inner end of the turntable 21 and can clamp and position the end of the part to be processed. The rotary drive assembly can... The drive turntable 21 rotates so that the turntable 21 drives the automated clamping assembly and the part to rotate synchronously; the translation mechanism 3 includes a slide rail 33, a translation drive assembly and a locking assembly. The slide rail 33 is fixedly installed on the bed 1. A slide seat 31 is slidably installed on the slide rail 33. A rotary positioning mechanism 2 is fixedly installed on the top of the slide seat 31. The translation drive assembly can drive the slide seat 31 to translate along the slide rail 33 so as to drive the rotary positioning mechanism 2 on the slide seat 31 to move parallel. The locking assembly can automatically lock and fix the slide seat 31 when the rotary positioning mechanism 2 on the slide seat 31 moves to the machining station.

[0044] When CNC machining a part, one end of the part is first clamped in the automated clamping assembly of the rotary positioning mechanism 2 on the bed 1. Then, the rotary drive assembly in the rotary positioning mechanism 2 drives the turntable 21 to rotate, so that the turntable 21 drives the automated clamping assembly and the part to rotate synchronously. The machining tool on the bed 1 performs CNC machining on the rotating part. After one end of the part is machined, the translation drive assembly drives the sliding seat 31 to translate along the slide rail 33, so that the rotary positioning mechanism 2 on the sliding seat 31 moves parallel to the rotary positioning mechanism 2 on the bed 1. This causes the two sets of rotary positioning mechanisms 2 to gradually move closer until the sliding seat 31 drives the part on the bed 1 to move closer together. The rotary positioning mechanism 2 moves to the CNC-machined end of the part, and the rotary positioning mechanism 2 clamps and positions the machined end of the part through the automated clamping assembly. Then, the rotary positioning mechanism 2 on the bed 1 releases its clamping on the part, allowing the part to be transferred from one set of rotary positioning mechanisms 2 to another set of rotary positioning mechanisms 2. Then, the translation drive assembly drives the sliding seat 31 to move and reset in the opposite direction along the slide rail 33, thereby driving the rotary positioning mechanism 2 and the part on it to move and reset until the rotary positioning mechanism 2 and the part move to the machining station. The locking assembly locks and fixes the sliding seat 31. Then, the rotary drive assembly drives the turntable 21, the automated clamping assembly and the part to rotate, so as to perform CNC machining on the other end of the part.

[0045] The translation mechanism 3 and the two sets of rotary positioning mechanisms 2 work together to automatically complete the clamping of the parts, so that the CNC machining process of the parts can be completed in one clamping, which greatly improves the CNC machining efficiency of the parts. When the sliding seat 31 and the rotary positioning mechanism 2 on it move to the machining station, the sliding seat 31 is automatically locked and fixed by the locking component, thereby improving the stability of the installation of the sliding seat 31 and the rotary positioning mechanism 2, preventing the rotary positioning mechanism 2 from causing the parts to vibrate and shift during the CNC machining process, which is conducive to improving the CNC machining accuracy of the parts.

[0046] Furthermore, this embodiment also includes a PLC intelligent controller, which is connected to the rotary positioning mechanism 2, the translation mechanism 3 and the CNC tool on the bed 1 to realize intelligent control of the rotary positioning mechanism 2, the translation mechanism 3 and the CNC tool, thereby realizing automated intelligent CNC machining of parts.

[0047] Example 2

[0048] Please see Figure 1 , Figure 2 , Figure 5 , Figure 6 As shown, the difference between this embodiment and the above embodiment is that the automated clamping assembly includes multiple sliding bases 214, multiple gripper positioning seats 215, and an opening and closing drive unit. The multiple sliding bases 214 are circumferentially distributed and slidably installed on the turntable 21. Multiple equidistant downward inclined guide bars 216 are fixedly installed on one side of the sliding bases 214. The gripper positioning seats 215 are disposed on one side of the sliding bases 214, and an upward inclined guide bar 217 that slides and engages with the downward inclined guide bars 216 is fixedly installed on one side of the gripper positioning seats 215. A gripper 22 is fixedly installed on the other side of the gripper positioning seats 215. The opening and closing drive unit can drive the sliding bases 214 to slide left and right along the tangent direction of the turntable 21. At this time, the sliding bases 214 can be driven by the sliding guide of the downward inclined guide bars 216 and the upward inclined guide bars 217 to move closer to or away from the center of the turntable 21.

[0049] A limiting block 211 is fixedly installed on the side of the sliding base 214 opposite to the inclined guide bar 216. The turntable 21 has a limiting groove 210 inside that can slide and engage with the limiting block 211. The surface of the turntable 21 also has a guide groove that can slide and engage with the gripper positioning seat 215. One end of the guide groove is set towards the center of the turntable 21. The opening and closing drive unit includes a clamping cylinder 27 and multiple guide seats 212. The multiple guide seats 212 correspond one-to-one with the multiple sliding bases 214, and the guide seats 212 are fixedly installed on one end of the corresponding sliding base 214. An inclined guide groove 213 is opened on the inner side of the guide seat 212.

[0050] The clamping cylinder 27 is fixedly installed on the outer end of the turntable 21. The telescopic end of the clamping cylinder 27 extends into the center hole of the turntable 21. A slider 28 is fixedly installed on the telescopic end of the clamping cylinder 27 and is slidably locked in the center hole of the turntable 21. A plurality of inclined guide blocks 29 corresponding one-to-one with the inclined guide grooves 213 are fixedly installed on the outer ring of one end of the slider 28. The ends of the inclined guide blocks 29 are slidably locked in the corresponding inclined guide grooves 213.

[0051] When clamping a part, the clamping cylinder 27 extends to drive the slider 28 to move forward along the center hole of the turntable 21. At this time, the slider 28 drives the inclined guide block 29 to move outward along the inclined guide groove 213. When the inclined guide block 29 moves, it drives the guide seat 212, the sliding base 214, and the limiting block 211 to move along the tangent of the turntable 21 through the guide of the inclined guide groove 213. At the same time, the sliding base 214 drives the gripper positioning seat 215 to slide along the guide groove towards the center of the turntable 21 through the sliding guide of the lower inclined guide bar 216 and the upper inclined guide bar 217. This drives the gripper 22 to move towards the center of the turntable 21 and close, thus clamping the part.

[0052] Correspondingly, when it is necessary to loosen the grip on the part, the clamping cylinder 27 retracts and drives the slider 28 to move backward along the center hole of the turntable 21 to reset. At this time, the slider 28 drives the inclined guide block 29 to move inward along the inclined guide groove 213 to reset. When the inclined guide block 29 moves, it drives the guide seat 212, the sliding base 214, and the limit block 211 to move in the opposite direction along the tangent of the turntable 21 to reset through the guide of the inclined guide groove 213. At the same time, the sliding base 214 drives the gripper positioning seat 215 to slide away from the center of the turntable 21 through the sliding guide of the lower inclined guide bar 216 and the upper inclined guide bar 217 to reset. This drives the gripper 22 to move, open and close, and loosen the grip on the part.

[0053] Example 3

[0054] Please see Figures 1-4 As shown, the difference between this embodiment and the above embodiment is that the rotary drive assembly includes a rotary drive motor 23 and a driven wheel 26. The rotary drive motor 23 is fixedly installed on one side of the outer end of the turntable 21. The output end of the rotary drive motor 23 is driven by a drive wheel 24. The driven wheel 26 is fixedly installed on the outer end of the turntable 21. The drive wheel 24 and the driven wheel 26 are connected by a drive belt 25.

[0055] When it is necessary to drive the part to rotate for machining, the drive motor 23 drives the transmission wheel 24 to rotate, and the transmission wheel 24 drives the turntable 21 to rotate through the transmission belt 25. In turn, the turntable 21 drives the gripper 22 and the part it holds to rotate together, so as to realize the rotation machining of the part.

[0056] Example 4

[0057] Please see Figure 1 , Figure 2 , Figure 7 , Figure 8 As shown, the difference between this embodiment and the above embodiment is that the translation drive assembly includes a translation drive motor 36 and multiple lead screws 32. The multiple lead screws 32 are rotatably installed in the slide rail 33, and the multiple lead screws 32 are threadedly connected to the sliding seat 31. The translation drive motor 36 is fixedly installed at the end of the slide rail 33, and the output end of the translation drive motor 36 and the end of the lead screw 32 are both fixedly installed with synchronous pulleys 34. The multiple synchronous pulleys 34 are connected to each other through a synchronous belt 35.

[0058] When it is necessary to drive the sliding seat 31 to slide and move the two rotary positioning mechanisms 2 closer together, the translation drive motor 36 drives the synchronous wheel 34 connected to it to rotate. At the same time, the synchronous wheel 34 drives other synchronous wheels 34 to rotate synchronously through the transmission of the synchronous belt 35, thereby driving multiple lead screws 32 to rotate synchronously. When the lead screws 32 rotate, they drive the sliding seat 31 to move closer to another set of rotary positioning mechanisms 2 along the slide rail 33 through the thread transmission, so that the two rotary positioning mechanisms 2 gradually get closer.

[0059] Correspondingly, when it is necessary to drive the rotary positioning mechanism 2 to move away, the translation drive motor 36 drives the synchronous wheel 34 connected to it to rotate in the opposite direction. At the same time, the synchronous wheel 34 drives other synchronous wheels 34 to rotate in the opposite direction through the transmission of the synchronous belt 35, thereby driving multiple lead screws 32 to rotate in the opposite direction. When the lead screws 32 rotate in the opposite direction, the sliding seat 31 is driven to move away from the other set of rotary positioning mechanisms 2 along the slide rail 33 through the thread transmission, so that the two rotary positioning mechanisms 2 gradually move away from each other.

[0060] By simultaneously driving the sliding seat 31 with multiple lead screws 32, the sliding seat 31 can be guided and limited in a synchronized manner, thereby improving the stability of the installation and operation of the sliding seat 31, and thus improving the stability of the installation and operation of the rotary positioning mechanism 2 on it.

[0061] Example 5

[0062] Please see Figure 1 , Figure 2 , Figures 7-10As shown, the difference between this embodiment and the above embodiment is that the locking component includes a positioning rod 39 and a lifting drive unit. The positioning rod 39 is vertically mounted on the sliding seat 31. A lower sliding seat 38 is movably inserted into the lower end of the positioning rod 39. The lower sliding seat 38 is slidably mounted on the lower end of the slide rail 33. When the sliding seat 31 moves to the processing station, the lifting drive unit can drive the lower sliding seat 38 to move upward, so that the lower sliding seat 38 and the sliding seat 31 are clamped and locked above and below the slide rail 33. An upper end plate 310 is fixedly mounted on the top end of the positioning rod 39 and abuts against the sliding seat 31. The bottom end of the positioning rod 39 extends to the lower end of the lower sliding seat 38 and is fixedly mounted on the lower end plate 311. The lifting drive unit includes a moving wedge block 312 and a pushing wedge block 313. The moving wedge block 312 is fixedly mounted on the bottom end of the lower sliding seat 38. The pushing wedge block 313 is mounted on the lower end of the slide rail 33. The pushing wedge block 313 can push the moving wedge block 312 upward through the top inclined surface.

[0063] The lower end plate 311 has a guide arc surface on its top outer ring and the push wedge block 313 has a guide arc surface on its bottom outer ring. When the sliding seat 31 moves the rotary positioning mechanism 2 and the part to the processing station, the sliding seat 31 moves the positioning rod 39 and the lower sliding seat 38 to the position of the push wedge block 313. The push wedge block 313 first moves the lower end plate 311 slightly downward by the guide arc surface of its bottom outer ring, thereby moving the positioning rod 39 and the upper end plate 310 slightly downward so that the upper end plate 310 can push the sliding seat 31 downward and limit it, improving the stability of the sliding seat 31 on the upper end of the slide rail 33. At the same time, the push wedge block 313 moves the lower end plate 311 slightly downward by the guide arc surface of its bottom outer ring. The wedge block 313 pushes the movable wedge block 312 upward through the top inclined surface, causing the movable wedge block 312 to drive the sliding seat 38 to move upward along the positioning rod 39 until the bottom end of the sliding seat 38 abuts against the bottom surface of the slide rail 33. At this time, the sliding seat 38 and the sliding seat 31 are respectively clamped to the upper and lower ends of the slide rail 33, thereby locking the sliding seat 38 and the sliding seat 31 on the slide rail 33. This further improves the firmness of the sliding seat 31 on the slide rail 33 and prevents the sliding seat 31, the rotary positioning mechanism 2 and the part from vibrating and displacing during the CNC machining of the part, which is conducive to improving the CNC machining accuracy of the part.

[0064] Furthermore, a limiting slide bar 315 is fixedly installed on the side of the push wedge block 313, and a limiting slide groove 314 is provided on the inner wall of the slide rail 33 to slide and engage with the limiting slide bar 315. An adjusting locking cylinder 37 is fixedly installed at the end of the slide rail 33, and the telescopic end of the adjusting locking cylinder 37 is fixedly connected to the end of the push wedge block 313. When it is necessary to adjust the position of the rotary positioning mechanism 2 on the sliding seat 31 according to the CNC machining process and the different parts being processed, the extension and retraction of the locking cylinder 37 can be adjusted to drive the push wedge block 313 and the limiting slide bar 315. The sliding seat 311 is moved left and right along the limiting slide groove 314 to adjust the push wedge block 313 to be below the new processing position, so that the sliding seat 31 can be moved to the processing position. The push wedge block 313 can cooperate with the moving wedge block 312, the lower end plate 311 and the positioning rod 39 to lock the sliding seat 31 on the slide rail 33, thereby improving the stability of the installation of the sliding seat 31. Furthermore, by adjusting the position of the push wedge block 313, it is convenient to limit and lock the sliding seat 31 when adjusting the position of the processing position according to the different CNC machining processes and processed parts, thereby improving the applicability of the equipment.

[0065] Example 6

[0066] This embodiment discloses a method for processing a brake roller, the specific steps of which are as follows:

[0067] First, one end of the blank required for machining the brake roller is clamped in the automated clamping assembly of the rotary positioning mechanism 2 on the bed 1. Then, the rotary drive assembly in the rotary positioning mechanism 2 drives the turntable 21 to rotate, so that the turntable 21 drives the automated clamping assembly and the blank to rotate synchronously. The machining tool on the bed 1 performs CNC machining on the rotating blank. After one end of the blank is machined, the translation drive assembly drives the sliding seat 31 to translate along the slide rail 33, so that the rotary positioning mechanism 2 on the sliding seat 31 moves parallel to the rotary positioning mechanism 2 on the bed 1, so that the two sets of rotary positioning mechanisms 2 gradually move closer until the sliding seat 31 drives the rotary positioning mechanism 2 on it to move. The machined blank is moved to one end, and the rotary positioning mechanism 2 clamps and positions the machined end of the blank through the automated clamping assembly. Then, the rotary positioning mechanism 2 on the bed 1 releases its clamp on the blank, allowing the blank to be transferred from one set of rotary positioning mechanisms 2 to another set of rotary positioning mechanisms 2. Then, the sliding seat 31 is driven to move and reset in the opposite direction along the slide rail 33 through the translation drive assembly, thereby driving the rotary positioning mechanism 2 and the blank on it to move and reset until the rotary positioning mechanism 2 and the blank move to the machining station. The locking assembly locks and fixes the sliding seat 31. Then, the rotary drive assembly drives the turntable 21, the automated clamping assembly and the blank to rotate, so as to perform CNC machining on the other end of the blank, and machine the blank into a brake roller.

[0068] In the description of this specification, references to terms such as "an embodiment," "example," "specific example," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0069] The preferred embodiments of the invention disclosed above are merely illustrative of the invention. These preferred embodiments do not exhaustively describe all details, nor do they limit the invention to the specific implementations described. Clearly, many modifications and variations can be made based on the content of this specification. This specification selects and specifically describes these embodiments to better explain the principles and practical applications of the invention, thereby enabling those skilled in the art to better understand and utilize the invention.

Claims

1. A CNC machine tool, comprising a bed, characterized in that: The bed is equipped with a translation mechanism and two sets of rotary positioning mechanisms. One set of rotary positioning mechanisms is fixedly installed at one end of the bed, and the other set of rotary positioning mechanisms is fixedly installed on the translation mechanism. The translation mechanism can drive the rotary positioning mechanism on it to translate left and right to adjust the distance between the two sets of rotary positioning mechanisms. The automated clamping assembly, rotary drive assembly, and turntable are described. The automated clamping assembly is installed on the inner end of the turntable and can clamp and position the end of the part to be processed. The rotary drive assembly can drive the turntable to rotate, so that the turntable drives the automated clamping assembly and the part to rotate synchronously. The translation mechanism includes a slide rail, a translation drive assembly, and a locking assembly. The slide rail is fixedly installed on the bed, and a sliding seat is slidably installed on the slide rail. The rotary positioning mechanism is fixedly installed on the top of the sliding seat. The translation drive assembly can drive the sliding seat to translate along the slide rail, thereby driving the rotary positioning mechanism on the sliding seat to move parallel. The locking assembly can automatically lock and fix the sliding seat when the rotary positioning mechanism on the sliding seat moves to the machining station.

2. A CNC machine tool according to claim 1, characterized in that: The automated clamping assembly includes multiple sliding bases, multiple gripper positioning seats, and an opening / closing drive unit. The multiple sliding bases are circumferentially distributed and slidably mounted on the turntable. Multiple equidistant downward inclined guide strips are fixedly mounted on one side of each sliding base. The gripper positioning seat is located on one side of the sliding base, and an upward inclined guide strip that slides and engages with the downward inclined guide strips is fixedly mounted on one side of the gripper positioning seat. A gripper is fixedly mounted on the other side of the gripper positioning seat. The opening / closing drive unit can drive the sliding base to slide left and right along the tangent direction of the turntable. At this time, the sliding base can be driven by the sliding guidance of the downward and upward inclined guide strips to move the gripper positioning seat and gripper on it toward or away from the center of the turntable.

3. A CNC machine tool according to claim 2, characterized in that: A limiting block is fixedly installed on the side of the sliding base opposite to the downward tilting guide bar. A limiting groove is opened inside the turntable that can slide and engage with the limiting block. A guide groove is also opened on the surface of the turntable that can slide and engage with the gripper positioning seat. One end of the guide groove is set towards the center of the turntable.

4. A CNC machine tool according to claim 2, characterized in that: The opening and closing drive unit includes a clamping cylinder and multiple guide seats. Each of the multiple guide seats corresponds to a multiple sliding base, and the guide seat is fixedly installed at one end of the corresponding sliding base. An inclined guide groove is provided on the inner side of the guide seat. The clamping cylinder is fixedly installed on the outer end of the turntable. The telescopic end of the clamping cylinder extends into the center hole of the turntable, and a slider is fixedly installed on the telescopic end of the clamping cylinder and slidably locked in the center hole of the turntable. A plurality of inclined guide blocks corresponding one-to-one with the inclined guide grooves are fixedly installed on the outer ring of one end of the slider, and the ends of the inclined guide blocks are slidably locked in the corresponding inclined guide grooves.

5. A CNC machine tool according to claim 1, characterized in that: The rotary drive assembly includes a rotary drive motor and a driven wheel. The rotary drive motor is fixedly installed on one side of the outer end of the turntable. A drive wheel is driven to the output end of the rotary drive motor. The driven wheel is fixedly installed on the outer end of the turntable. The drive wheel and the driven wheel are connected by a drive belt.

6. A CNC machine tool according to claim 1, characterized in that: The translation drive assembly includes a translation drive motor and multiple lead screws. The multiple lead screws are rotatably mounted inside the slide rail and are threadedly connected to the sliding seat. The translation drive motor is fixedly mounted at the end of the slide rail, and synchronous pulleys are fixedly mounted at the output end of the translation drive motor and the end of the lead screws. The multiple synchronous pulleys are connected to each other by a synchronous belt drive.

7. A CNC machine tool according to claim 1, characterized in that: The locking assembly includes a positioning rod and a lifting drive unit. The positioning rod is vertically mounted on the sliding seat, and a lower sliding seat is movably inserted into the lower end of the positioning rod. The lower sliding seat is slidably mounted on the lower end of the slide rail. When the sliding seat moves to the processing station, the lifting drive unit can drive the lower sliding seat to move upward, so that the lower sliding seat and the sliding seat are clamped and locked above and below the slide rail.

8. A CNC machine tool according to claim 7, characterized in that: The top end of the positioning rod is fixedly installed with an upper end plate that abuts against the sliding seat, and the bottom end of the positioning rod extends to the bottom of the sliding seat and is fixedly installed with a lower end plate. The lifting drive unit includes a moving wedge block and a pushing wedge block. The moving wedge block is fixedly installed at the bottom end of the sliding seat, and the pushing wedge block is installed at the bottom end of the slide rail. The pushing wedge block can push the moving wedge block upward through the top inclined surface.

9. A CNC machine tool according to claim 8, characterized in that: The side of the push wedge block is fixedly installed with a limiting slide bar, and the inner wall of the slide rail is provided with a limiting slide groove that slides and engages with the limiting slide bar. An adjusting locking cylinder is fixedly installed at the end of the slide rail, and the telescopic end of the adjusting locking cylinder is fixedly connected to the end of the push wedge block.

10. A method for machining brake rollers, using a CNC machine tool as described in any one of claims 1-9, characterized in that, The specific steps are as follows: First, one end of the blank required for machining the brake roller is clamped in the automated clamping assembly of the rotary positioning mechanism on the machine bed. Then, the rotary drive assembly within the rotary positioning mechanism drives the turntable to rotate, causing the turntable to drive the automated clamping assembly and the blank to rotate synchronously. The machining tool on the machine bed performs CNC machining on the rotating blank. After one end of the blank is machined, the translation drive assembly drives the sliding seat to translate along the slide rail, causing the rotary positioning mechanism on the sliding seat to move parallel to the rotary positioning mechanism on the machine bed. This causes the two sets of rotary positioning mechanisms to gradually move closer until the sliding seat drives its rotary positioning mechanism to move towards the blank. One end of the blank is CNC machined, and the rotary positioning mechanism clamps and positions the machined end of the blank through the automated clamping component. Then, the rotary positioning mechanism on the bed releases the clamp on the blank, allowing the blank to be transferred from one set of rotary positioning mechanisms to another. Then, the translation drive component drives the sliding seat to move and reset along the slide rail in the opposite direction, thereby driving the rotary positioning mechanism and the blank on it to move and reset until the rotary positioning mechanism and the blank move to the machining station. The locking component locks and fixes the sliding seat. Then, the rotary drive component drives the turntable, the automated clamping component and the blank to rotate, so as to perform CNC machining on the other end of the blank, forming a brake roller.

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