High-precision numerical control machine tool capable of replacing workpieces without shutdown

Abstract

The high-precision numerical control machine tool comprises a rack, a workbench is arranged on one side of the rack, a guide rail is arranged on the workbench, a sliding groove is formed in the guide rail, a mounting frame used for fixing the workpiece is connected to the guide rail in a sliding mode, and standby tables are arranged on the two symmetrical sides of the workbench; the mounting frame is slidably connected to the standby table, a reversing mechanism is arranged at the position, close to the workbench, of the standby table, and the reversing mechanism is used for reversing the mounting frame on the standby table to the workbench. The device has the effects that workpieces can be replaced without shutdown, and the production efficiency is improved.

Description

Technical Field

[0001] The present application relates to the technical field of CNC machine tools, and in particular to a high-precision CNC machine tool for replacing workpieces without stopping the machine. Background Art

[0002] CNC machine tools are machine tools that can perform milling, drilling and other processing on workpieces. They control the movement of the machine tools and perform processing tasks through pre-programmed processing programs. These programs are usually written in computer languages and can be programmed and simulated on computers.

[0003] When using integrated CNC machine tools to perform milling, drilling and tapping on workpieces such as profiles, workers usually need to manually install the long workpieces such as profiles to be processed on the workbench to ensure the stability of the workpiece during processing. After processing is completed, the workpiece is removed from the workbench by the workers. Usually, CNC machine tools are equipped with a single workbench. When the workpiece or tooling needs to be replaced, the machine must be stopped for replacement, resulting in low production efficiency and failure to meet the needs of efficient and continuous production.

[0004] Therefore, designing a CNC machine tool that can replace workpieces without stopping the machine is an urgent problem to be solved. Summary of the Invention

[0005] In order to be able to replace workpieces without stopping the machine and improve production efficiency, the present application provides a high-precision CNC machine tool that can replace workpieces without stopping the machine.

[0006] The present application provides a high-precision CNC machine tool for workpiece replacement without stopping, which adopts the following technical solution: A high-precision CNC machine tool for replacing workpieces without stopping the machine comprises a frame, a workbench is provided on one side of the frame, a guide rail is provided on the workbench, a slide groove is provided in the guide rail, a mounting frame for fixing the workpiece is slidably connected to the guide rail, spare tables are provided on both sides symmetrically of the workbench, the mounting frame is slidably connected to the spare table, a reversing mechanism is provided near the workbench on the spare table, the reversing mechanism is used to reversing the mounting frame on the spare table to the workbench.

[0007] By adopting the above technical solution, when the user uses it, the workpiece can be installed on the mounting bracket of the spare table, and the mounting bracket with the workpiece fixed can be slid to the reversing table. The reversing mechanism can slide the mounting bracket from the reversing table on one side to the workbench, and then slide it from the reversing table on the other side to the spare table, realizing feeding on one side and discharging on the other side. It can also slide from the reversing table on one side to the workbench, and then slide back to the spare table from the reversing table on the same side. At this time, the mounting bracket on the spare table on the other side can slide to the workbench, realizing feeding and discharging on the same side, which can replace the traditional shutdown and replacement, reduce the time for workpiece clamping, and improve work efficiency.

[0008] Optionally, the reversing mechanism includes a reversing platform arranged at a position of the spare platform near the workbench, a receiving cavity is provided in the reversing platform, a driving platform is rotatably connected in the receiving cavity, a supporting guide rail is fixedly connected to the top of the driving platform, a slide groove is provided on the top of the supporting guide rail, the slide groove is used for the slide rail at the bottom of the mounting frame to slide, the slide groove of the supporting guide rail is connected to the slide groove on the spare platform, and a driving component for driving the reversing platform to rotate ninety degrees is provided at the bottom of the reversing platform.

[0009] By adopting the above technical solution, when the user uses it, after the mounting part for mounting the workpiece slides onto the driving table, the driving assembly drives the driving table to rotate ninety degrees, that is, the mounting bracket on the reversing table can be rotated ninety degrees, so that the mounting bracket on the reversing table is rotated ninety degrees, and the slide rail at the bottom of the mounting bracket slides to be flush with the slide groove on the workbench, thereby facilitating the mounting bracket to slide from the spare table to the workbench, and facilitating the workpiece to slide between the spare table and the workbench.

[0010] Optionally, the driving assembly includes a driving motor fixedly connected to the bottom of the reversing table, the output shaft of the driving motor extends into the accommodating cavity and is fixedly connected to the driving table, an arc-shaped guide groove is provided on the reversing table, the arc-shaped guide groove forms a ninety-degree angle with the center of the output shaft of the driving motor, a locking rod is provided on the driving table, the locking rod is slidably connected in the arc-shaped guide groove, an automatic locking assembly is provided on the reversing table for fixing the mounting frame and the driving table, and an automatic unlocking assembly is provided at the bottom of the reversing table for automatically unlocking the mounting frame and the driving table.

[0011] By adopting the above technical solution, when the user uses it, the automatic locking assembly fixes the mounting frame and the driving platform to prevent the mounting frame from falling during the rotation process. The driving motor is used to rotate the reversing platform ninety degrees, and the locking rod slides in the arc-shaped guide groove. The cooperation of the locking rod and the arc-shaped guide groove plays a guiding and limiting role, thereby reversing the mounting frame by exactly ninety degrees.

[0012] Optionally, the automatic locking assembly includes a plug-in rod connected to the end of the locking rod, a reset spring is provided on the locking rod, a limit plate is fixedly connected to the locking rod, the reset spring is located between the limit plate and the reversing table, the plug-in rod is located at the top of the limit plate, an inclined surface is provided at the end of the plug-in rod, and an insertion interface is provided at the bottom of the mounting frame, and the insertion interface is used for the plug-in of the plug-in rod.

[0013] By adopting the above technical solution, when the user uses it, after the mounting bracket slides to the reversing table, the tension of the reset spring causes the plug-in rod to automatically plug into the plug-in interface, automatically fixing the mounting bracket and the reversing table. When the driving motor drives the reversing table to rotate ninety degrees, the mounting bracket rotates ninety degrees along with the reversing table.

[0014] Optionally, the automatic unlocking assembly includes a baffle rod fixedly connected to the bottom of the locking rod, an unlocking slope is provided on the baffle rod, an unlocking plate is fixedly connected to the end of the spare table near the arc guide groove, a guide slope is provided on the unlocking plate, the guide slope is tilted downward, and the guide slope is located on the side of the unlocking plate facing the locking rod.

[0015] By adopting the above technical solution, when the user uses it, the unlocking rod slides in the arc-shaped guide groove. When the locking rod slides to a position close to the unlocking plate, the guide slope on the unlocking plate cooperates with the unlocking slope on the block rod, pushing the block rod to move downward along the unlocking slope, so that the locking rod drives the plug rod to slide downward and separate from the plug interface, thereby realizing automatic unlocking of the mounting frame and the reversing table.

[0016] Optionally, a pusher wheel is provided at the bottom of the mounting frame, and a convex ring is provided in the middle of the pusher wheel.

[0017] By adopting the above technical solution, when the user uses it, the convex ring is used to push the debris in the chute, eject the waste in the chute, and reduce the accumulation or blockage of waste in the chute.

[0018] Optionally, the mounting frame is provided with a scraper on the front side of the pusher wheel, the scraper is used to abut against the table surface of the workbench, and the side of the scraper is provided with a pointed end portion, which is used to guide the debris lifted by the pusher wheel to both sides.

[0019] By adopting the above technical solution, when the user uses it, the tip is used to guide the debris lifted by the push wheel to both sides, making it easier for the scraper to scrape the debris off the workbench, thereby reducing the accumulation or blockage of waste in the chute, and making it easier for the slide rail to slide smoothly on the workbench and the spare table.

[0020] Optionally, a material guide slope is provided at the bottom of the workbench, and the debris scraped by the scraper falls onto the material guide slope. A material receiving trough is placed below the workbench on the frame, and the material guide slope is tilted downward toward one side of the material receiving trough to facilitate the debris scraped by the scraper to roll into the material receiving trough. A conveyor belt is provided in the material receiving trough, and the transmission direction of the conveyor belt is set along the length direction of the material receiving trough. A motor for driving the conveyor belt is provided on one side of the frame.

[0021] By adopting the above technical solution, when the user uses it, the debris scraped by the scraper falls onto the guide slope, and the guide slope facilitates the debris scraped by the scraper to roll into the receiving trough. The debris falls onto the conveyor belt of the discharge trough, and the conveyor belt automatically guides the debris in the receiving trough outward, making it easy to collect the debris.

[0022] In summary, this application includes at least one of the following beneficial technical effects: The camming mechanism is used to move the workpiece onto the workbench, and the mounting bracket can be adjusted to move the workpiece onto the workbench, so that the workpiece can be mounted on the mounting bracket of the standby table. The mounting bracket with the workpiece fixed can slide to the reversing table. The reversing mechanism can slide the mounting bracket from the reversing table on one side to the workbench, and then slide from the reversing table on the other side to the standby table, so as to realize one-side feeding and one-side discharging. The mounting bracket can also slide from the reversing table on one side to the workbench, and then slide back to the standby table from the reversing table on the same side. At this time, the mounting bracket on the standby table on the other side can slide to the workbench, so as to realize same-side feeding and same-side discharging. The camming mechanism can replace the traditional shutdown for reloading, reduce the time for workpiece clamping, and improve work efficiency. 2. A receiving cavity is provided in the reversing table, a driving table is rotatably connected in the receiving cavity, a driving motor is provided at the bottom of the reversing table, an output shaft of the driving motor extends into the receiving cavity and is fixedly connected to the driving table, an arc-shaped guide groove is provided on the reversing table, the arc-shaped guide groove forms a ninety-degree angle with the center of the output shaft of the driving motor, a locking rod is provided on the driving table, the locking rod is slidably connected to the arc-shaped guide groove, the driving motor is used to rotate the reversing table ninety degrees, the locking rod slides in the arc-shaped guide groove, and the cooperation of the locking rod and the arc-shaped guide groove plays a guiding and limiting role, so that the mounting frame is rotated exactly ninety degrees for reversing, thereby facilitating the sliding of the mounting frame from the standby table to the workbench, and facilitating the sliding of the workpiece between the standby table and the workbench; When the locking rod is moved to the position close to the unlocking plate, the guide inclined surface on the unlocking plate cooperates with the unlocking inclined surface on the stopper rod, pushing the stopper rod to move downward along the unlocking inclined surface, so that the locking rod drives the plugging rod to slide downward and separate from the plugging interface, realizing automatic unlocking of the mounting frame and the reversing table. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 It is a schematic diagram of the overall structure of an embodiment of the present application; Figure 2 This is an exploded view of the spare table, reversing table, and mounting frame; Figure 3It is a cross-sectional view of the spare table, reversing table and mounting frame; Figure 4 It is a structural diagram of the reversing table; Figure 5 1. It is a structural diagram of the mounting frame; Figure 6 It is a cross-sectional view of the spare table, workbench and mounting frame.

[0024] Explanation of the accompanying reference numerals: 1. Frame; 2. Workbench; 21. Material guide slope; 22. Material receiving trough; 221. Conveyor belt; 3. Mounting frame; 31. T-shaped slide rail; 32. Plug port; 33. Push wheel; 331. Convex ring; 34. Scraper; 341. Tip; 4. Spare table; 41. T-shaped slide groove; 5. Reversing mechanism; 51. Reversing table; 511. Accommodating chamber; 512. Arc guide groove; 52. Driving table; 53. Support guide rail; 54. Driving motor; 55. Locking rod; 551. Limiting plate; 552. Stop rod; 553. Unlocking slope; 56. Reset spring; 57. Plug rod; 58. Unlocking plate; 581. Guide slope. DETAILED DESCRIPTION

[0025] The following is combined with Figure 1-6 This application is described in further detail.

[0026] The present application discloses a high-precision CNC machine tool for replacing workpieces without stopping. Figure 1 and Figure 2 , including a frame 1, a workbench 2 is provided on the frame 1, the workbench 2 is horizontally arranged along the length direction of the frame 1, and a mounting frame 3 for mounting a workpiece is slidably connected to the workbench 2; spare tables 4 are fixedly connected on both sides of the workbench 2, the spare table 4 is arranged perpendicular to the workbench 2, and a mounting frame 3 is slidably connected to the spare table 4, and a reversing mechanism 5 is provided at the connection between the spare table 4 and the workbench 2, and the reversing mechanism 5 is used to drive the mounting frame 3 on the spare table 4 to automatically reversing to the workbench 2; when working, the spare tables 4 on both sides can feed from one side and discharge from the other side, or feed from the same side and discharge from the same side, and the two spare tables 4 can be used interchangeably, thereby improving work efficiency.

[0027] The top of the workbench 2 is fixedly connected with multiple guide rails, three of which are shown in the figure, but are not limited to three. It is only necessary that the number of guide rails on the workbench 2 corresponds to the number of slide grooves on the spare table 4; the bottom of the mounting frame 3 is fixedly connected with multiple T-shaped slide rails 31, and T-shaped slide grooves 41 are provided on the guide rails and the spare table 4, and the T-shaped slide rails 31 are slidably connected in the T-shaped slide grooves 41.

[0028] Reference Figure 2 and Figure 3The reversing mechanism 5 includes a reversing platform 51 disposed at a position near the standby platform 4 and the workbench 2. A circular accommodating chamber 511 is defined within the reversing platform 51. A driving platform 52 is rotatably connected to the accommodating chamber 511. A plurality of support rails 53 are fixedly connected to the top of the driving platform 52. The tops of the support rails 53 are flush with the top of the standby platform 4. T-shaped guide grooves 41 are defined within the support rails 53. The T-shaped guide grooves 41 of the support rails 53 are connected to the T-shaped guide grooves 41 on the standby platform 4. The T-shaped guide grooves 41 are used for sliding the T-shaped guide rails 31. A T-shaped guide groove 41 is defined on the top of the reversing platform 51, which is close to the standby platform 4, and a T-shaped guide groove 41 is defined on the side close to the workbench 2, which is connected to the T-shaped guide groove 41.

[0029] Reference Figure 3 and Figure 4 A driving motor 54 is fixedly connected to the bottom of the reversing table 51. The output shaft of the driving motor 54 extends into the accommodating cavity 511 and is fixedly connected to the driving table 52. The driving motor 54 is used to rotate the reversing table 51 ninety degrees, so that the supporting guide rail 53 rotates ninety degrees, and rotates from the supporting guide rail 53 docking with the T-shaped slide groove 41 on the spare table 4 to docking with the T-shaped slide groove 41 on the side of the reversing table 51 close to the workbench 2, thereby rotating the mounting frame 3 ninety degrees and reversing it, so that the reversed mounting frame 3 slides onto the workbench 2. The reversing platform 51 is provided with an arc-shaped guide groove 512, which forms a ninety-degree angle with the center of the output shaft of the drive motor 54. The reversing platform 51 is provided with a locking rod 55, which is vertically arranged. The locking rod 55 is slidably connected to the arc-shaped guide groove 512, and one end of the locking rod 55 extends into the reversing platform 51. A reset spring 56 is sleeved on the locking rod 55, and a limit plate 551 is fixedly connected to the locking rod 55. The reset spring 56 is located between the limit plate 551 and the reversing platform 51. The tightening rod 55 is located at the top of the limit plate 551 and is fixedly connected to the plug-in rod 57. The end of the plug-in rod 57 is provided with a bevel, and the bottom of the mounting frame 3 is provided with an insertion interface 32, which is used for the plug-in rod 57 to be plugged in; after the mounting frame 3 slides to the reversing table 51, the tension of the return spring 56 causes the plug-in rod 57 to be automatically plugged into the insertion interface 32, fixing the mounting frame 3 and the reversing table 51. When the drive motor 54 drives the reversing table 51 to rotate ninety degrees, the mounting frame 3 follows the reversing table 51 to rotate ninety degrees.

[0030] When the locking rod 55 slides to a position close to the unlocking plate 58, the guide slope 581 on the unlocking plate 58 cooperates with the unlocking slope 553 on the blocking rod 552, pushing the blocking rod 552 to move downward along the unlocking slope 553, so that the locking rod 55 drives the connecting rod 57 to slide downward and separate from the plug interface 32, thereby realizing automatic unlocking of the mounting frame 3 and the reversing table 51.

[0031] Reference Figure 5 The bottom of the mounting frame 3 is provided with a pushing wheel 33, and the middle part of the pushing wheel 33 is provided with a convex ring 331, which is used to push the debris in the T-shaped slide 41, and push the waste in the T-shaped slide 41 out, reducing the accumulation or blockage of waste in the T-shaped slide 41; the mounting frame 3 is provided with a scraper 34 on the front side of the pushing wheel 33, and the scraper 34 is used to abut the table surface of the workbench 2, and the side of the scraper 34 is provided with a pointed end 341, which is used to guide the debris pushed up by the pushing wheel 33 to both sides, so that the scraper 34 can scrape the debris on the workbench 2, thereby reducing the accumulation or blockage of waste in the T-shaped slide 41, thereby facilitating the smooth sliding of the T-shaped slide 31 on the workbench 2 and the spare table 4.

[0032] Reference Figure 6 A material guide slope 21 is provided at the bottom of the workbench 2, and the debris scraped by the scraper 34 falls onto the material guide slope 21. A material receiving trough 22 is placed under the frame 1 located below the workbench 2, and the material guide slope 21 is inclined downward toward one side of the material receiving trough 22, so that the debris scraped by the scraper 34 can roll into the material receiving trough 22, which is convenient for collecting the debris; a conveyor belt 221 is provided in the material receiving trough 22, and the transmission direction of the conveyor belt 221 is set along the length direction of the material receiving trough 22. A motor for driving the conveyor belt 221 is provided on one side of the frame 1, and the debris falls to the conveyor belt 221 of the material discharge trough, and the conveyor belt 221 automatically guides the debris in the material receiving trough 22 outward, which is convenient for collecting the debris.

[0033] The implementation principle of a high-precision CNC machine tool for replacing workpieces without stopping the machine in the embodiment of the present application is as follows: the mounting frame 3 is placed on the spare table 4, and then the workpiece is fixed on the mounting frame 3, and the mounting frame 3 is slid onto the reversing table 51; the mounting frame 3 slides onto the driving table 52, and the tension of the return spring 56 causes the plug-in rod 57 to automatically plug into the plug-in interface 32, fixing the mounting frame 3 and the reversing table 51; then, the driving motor 54 drives the reversing table 51 to rotate ninety degrees, so that the mounting frame 3 rotates ninety degrees along with the reversing table 51, so that the T-shaped slide 41 on the support guide rail 53 and the T-shaped slide 4 on the top of the reversing table 51 are rotated ninety degrees. 1 and the T-shaped slide groove 41 on the workbench 2 abut in sequence; at the same time, when the driving platform 52 rotates nearly ninety degrees, the unlocking rod slides in the arc-shaped guide groove 512, and when the locking rod 55 slides to a position close to the unlocking plate 58, the guiding inclined surface 581 on the unlocking plate 58 cooperates with the unlocking inclined surface 553 on the blocking rod 552, pushing the blocking rod 552 to move downward along the unlocking inclined surface 553, so that the locking rod 55 drives the plugging rod 57 to slide downward and separate from the plug interface 32, thereby realizing automatic unlocking of the mounting frame 3 and the reversing platform 51; finally, the mounting frame 3 is driven to slide from the reversing platform 51 to the workbench 2.

[0034] Among them, the mounting frame 3 can slide from the reversing table 51 on one side to the workbench 2, and then slide from the reversing table 51 on the other side to the spare table 4, realizing feeding on one side and discharging on the other side, or it can slide from the reversing table 51 on one side to the workbench 2, and then slide back to the spare table 4 from the reversing table 51 on the same side. At this time, the mounting frame 3 on the spare table 4 on the other side can slide to the workbench 2, realizing feeding and discharging on the same side. No matter which method is used, it can replace the traditional shutdown and replacement, reduce the time for workpiece clamping, and improve work efficiency.

[0035] The above are all preferred embodiments of the present application, and are not intended to limit the scope of protection of the present application. Therefore, any equivalent changes made based on the structure, shape, and principle of the present application should be included in the scope of protection of the present application.

Claims

1. A high-precision CNC machine tool for replacing workpieces without stopping the machine, comprising a frame (1), a workbench (2) provided on one side of the frame (1), a guide rail provided on the workbench (2), a slide groove provided in the guide rail, and a mounting frame (3) for fixing the workpiece slidably connected to the guide rail, characterized in that: A spare table (4) is provided on both symmetrical sides of the workbench (2), and the mounting frame (3) is slidably connected to the spare table (4). A reversing mechanism (5) is provided on the spare table (4) near the workbench (2), and the reversing mechanism (5) is used to reversing the mounting frame (3) on the spare table (4) to the workbench (2).

2. The high-precision CNC machine tool for non-stop workpiece replacement according to claim 1, characterized in that: The reversing mechanism (5) comprises a reversing platform (51) arranged at a position of the standby platform (4) close to the workbench (2); a receiving chamber (511) is provided in the reversing platform (51); a driving platform (52) is rotatably connected in the receiving chamber (511); a supporting guide rail (53) is fixedly connected to the top of the driving platform (52); a slide groove is provided on the top of the supporting guide rail (53); the slide groove is used for sliding the slide rail at the bottom of the mounting frame (3); the slide groove of the supporting guide rail (53) is connected to the slide groove on the standby platform (4); and a driving component for driving the reversing platform (51) to rotate ninety degrees is provided at the bottom of the reversing platform (51).

3. The high-precision CNC machine tool for non-stop workpiece replacement according to claim 2, characterized in that: The driving assembly comprises a driving motor (54) fixedly connected to the bottom of the reversing platform (51), the output shaft of the driving motor (54) extends into the accommodating cavity (511) and is fixedly connected to the driving platform (52), an arc-shaped guide groove (512) is provided on the reversing platform (51), and the arc-shaped guide groove (512) forms a ninety-degree angle with the center of the output shaft of the driving motor (54), a locking rod (55) is provided on the driving platform (52), and the locking rod (55) is slidably connected in the arc-shaped guide groove (512), an automatic locking assembly for fixing the mounting frame (3) and the driving platform (52) is provided on the reversing platform (51), and an automatic unlocking assembly for automatically unlocking the mounting frame (3) and the driving platform (52) is provided at the bottom of the reversing platform (51).

4. The high-precision CNC machine tool for non-stop workpiece replacement according to claim 3, characterized in that: The automatic locking assembly comprises a plug-in rod (57) connected to the end of a locking rod (55); a return spring (56) is sleeved on the locking rod (55); a limit plate (551) is fixedly connected to the locking rod (55); the return spring (56) is located between the limit plate (551) and the reversing platform (51); the plug-in rod (57) is located at the top of the limit plate (551); an inclined surface is provided at the end of the plug-in rod (57); and an insertion interface (32) is provided at the bottom of the mounting frame (3); and the insertion interface (32) is used for plugging the plug-in rod (57).

5. The high-precision CNC machine tool for non-stop workpiece replacement according to claim 3, characterized in that: The automatic unlocking assembly comprises a blocking rod (552) fixedly connected to the bottom of the locking rod (55), an unlocking inclined surface (553) being provided on the blocking rod (552), an unlocking plate (58) being fixedly connected to the end of the standby table (4) close to the arc-shaped guide groove (512), a guide inclined surface (581) being provided on the unlocking plate (58), the guide inclined surface (581) being arranged to be tilted downward, and the guide inclined surface (581) being located on the side of the unlocking plate (58) facing the locking rod (55).

6. The high-precision CNC machine tool for non-stop workpiece replacement according to claim 1, characterized in that: A pushing wheel (33) is provided at the bottom of the mounting frame (3), and a convex ring (331) is provided in the middle of the pushing wheel (33).

7. The high-precision CNC machine tool for non-stop workpiece replacement according to claim 7, characterized in that: The mounting frame (3) is provided with a scraper (34) on the front side of the push wheel (33), and the scraper (34) is used to abut against the table surface of the workbench (2). The side of the scraper (34) is provided with a tip portion (341), and the tip portion (341) is used to guide the debris lifted by the push wheel (33) to both sides.

8. The high-precision CNC machine tool for non-stop workpiece replacement according to claim 1, characterized in that: A material guiding slope (21) is provided at the bottom of the workbench (2), and debris scraped off by the scraper (34) falls onto the material guiding slope (21). A material receiving trough (22) is placed on the frame (1) below the workbench (2). The material guiding slope (21) is inclined downward toward one side of the material receiving trough (22). A conveyor belt (221) is provided in the material receiving trough (22), and the transmission direction of the conveyor belt (221) is arranged along the length direction of the material receiving trough (22). A motor for driving the conveyor belt (221) is provided on one side of the frame (1).

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