Automatic numerical control machine tool with automatic workpiece overturning

Abstract

The utility model discloses an automatic numerical control machine tool of workpiece automatic turnover belongs to numerical control machine tool technical field, including bottom plate, support frame, turnover clamping mechanism and balance mechanism, turnover clamping mechanism includes the electric push rod and telescopic link fixed in the inner wall of support frame, and movable electric ring guide rail of connection, the inner wall sliding connection of electric ring guide rail has the moving block, and the fixed frame is fixedly connected between the moving block, is connected with the sucking disc shell on the fixed frame, and electric push rod drives electric ring guide rail and moves to position, and the moving block is driven to rotate again to electric ring guide rail, and the fixed frame is driven to realize workpiece turnover, and the balance mechanism is located between bottom plate and support frame, including level, hydraulic cylinder, jacks, spherical joint and infusion assembly, and the level detects the balance degree of support frame in real time. The utility model can automatically clamp and overturn workpiece, and can actively keep machine tool balance, improves processing efficiency and stability.

Description

Technical Field

[0001] This utility model relates to the field of CNC machine tool technology, and in particular to an automated CNC machine tool that automatically flips workpieces. Background Technology

[0002] Automated CNC machine tools are the core equipment of modern manufacturing. They control the cutting tools through preset programs to perform high-precision cutting, drilling or milling of workpieces, which greatly improves production efficiency.

[0003] However, in complex machining tasks, the workpiece needs to be machined on multiple sides. After the first side of the workpiece is machined, it needs to be flipped over to machine the opposite side.

[0004] In existing technologies, the operation of flipping the workpiece relies on manual intervention, that is, pausing the machine tool operation, having the operator manually unload the workpiece, flip it, and then re-clamp it. However, manual flipping not only interrupts the continuous automated process, but also depends on the worker's skill level.

[0005] The manual reclamping process not only severely reduces the overall production efficiency and equipment utilization of automated CNC machine tools, but also introduces positioning errors during the second clamping, resulting in a decrease in the machining accuracy of the final product. Although there are solutions that attempt to use independent robots to solve this problem, they make the equipment structure bulky and the control equipment highly complex, and the cost increases dramatically.

[0006] Therefore, this utility model proposes an automated CNC machine tool for automatic workpiece flipping to overcome the shortcomings of the prior art. Utility Model Content

[0007] In view of the fact that existing automated CNC machine tools lack an integrated automatic flipping structure, resulting in limited functionality, interrupted processing flow, low automation efficiency, and the problem that manual flipping and secondary clamping can easily introduce positioning errors, this utility model aims to provide an automated CNC machine tool with an improved structure that can effectively solve the above problems by automatically flipping the workpiece.

[0008] This utility model provides an automated CNC machine tool for automatic workpiece flipping, including: a base plate and a support frame, the support frame being fixedly connected to the top of the base plate, and the CNC machine tool also including a flipping clamping mechanism, which is disposed on the outer wall of the support frame; The flipping clamping mechanism includes an electric push rod and a telescopic rod, both of which are fixed to the front and rear sides of the inner wall of the support frame. The flipping clamping mechanism also includes an electric circular guide rail, which is movably connected to one end of an electric push rod and a telescopic rod on the corresponding side. The electric circular guide rail can move back and forth under the drive of the electric push rod and the guidance and support of the telescopic rod. Opposite moving blocks are slidably connected to the inner wall of the electric circular guide rail, and a fixed frame is fixedly connected between the opposite moving blocks. A suction cup shell is fixedly connected to the inner wall of the fixed frame. The electric circular guide rail is also used to drive the moving blocks to rotate after startup. The moving blocks drive the fixed frame to rotate, thereby causing the workpiece held by the suction cup shell to flip.

[0009] Preferably, the flipping clamping mechanism further includes a negative pressure control component. A negative pressure sensor is fixedly connected to the inner wall of the suction cup shell, and a one-way valve is fixedly connected to the outer wall of the suction cup shell. The negative pressure control component communicates with the interior of the suction cup shell through the one-way valve to extract gas from the suction cup shell, and the negative pressure sensor is used to detect the negative pressure value inside the suction cup shell to clamp the workpiece tightly.

[0010] Preferably, the negative pressure control component includes an electric vacuum pump and a vacuum hose. The electric vacuum pump is fixedly connected to the front and rear sides of the bottom of the support frame and is connected to the vacuum hose, which is connected to a one-way valve.

[0011] Preferably, the outer wall of the suction cup housing is fixedly connected with multiple anti-slip blocks. The anti-slip blocks are used to increase the friction between the suction cup housing and the workpiece when they come into contact, and can still clamp the workpiece even when there is lubricating oil on the workpiece surface.

[0012] Preferably, the CNC machine tool further includes a balancing mechanism, which is fixedly connected to the top of the base plate and located between the support frame and the base plate. The balancing mechanism includes a level fixed to the bottom of the support frame and multiple hydraulic cylinders set on the base plate. The level is used to detect the balance of the support frame in real time.

[0013] Preferably, the balancing mechanism further includes a push rod, which is disposed on the top of the hydraulic cylinder and is used to perform telescopic movement under the drive of the hydraulic cylinder. A spherical joint is fixedly connected to the top of the push rod, and a steering groove is provided at the bottom of the support frame corresponding to the position of the spherical joint. The spherical joint is rotatably accommodated in the steering groove.

[0014] Preferably, the balancing mechanism further includes a fluid delivery assembly connected to multiple hydraulic cylinders. The fluid delivery assembly is activated and supplies hydraulic oil to the corresponding hydraulic cylinder when the level detects a deviation in balance.

[0015] Preferably, the infusion assembly includes an oil tank and a hydraulic pump. The outlet of the hydraulic pump is connected to a hydraulic cylinder, and the inlet of the hydraulic pump is connected to the oil tank. The hydraulic pump is used to extract hydraulic oil from the oil tank and deliver it to the hydraulic cylinder after controlled start-up.

[0016] This utility model has the following beneficial effects: 1. This utility model solves the problem of the lack of an integrated structure for automatic clamping and flipping of workpieces in existing CNC machine tools, which leads to interruption of the processing flow and low efficiency, by setting up a flipping clamping mechanism composed of an electric push rod, a telescopic rod, an electric ring guide rail, a moving block, a fixed frame and a suction cup shell, and cooperating with a negative pressure control component. It can automatically and accurately position the workpiece, reliably adsorb and stably flip it, which significantly improves production efficiency.

[0017] 2. This utility model solves the problem of the lack of active balancing calibration mechanism in machine tools in the prior art, which leads to a decrease in machining accuracy due to equipment deformation. It solves the problem by setting up a balancing mechanism consisting of a level, hydraulic cylinder, push rod, spherical joint, steering groove and fluid delivery assembly. The real-time monitoring of the machine tool balance and the dynamic hydraulic adjustment ensure the overall stability of the equipment and improve the machining accuracy of the workpiece.

[0018] 3. This utility model solves the problem of unstable clamping or uncontrollable clamping force of traditional suction cups when there is lubricating oil on the workpiece surface by setting anti-slip blocks on the outer wall of the suction cup shell and using a negative pressure sensor for closed-loop detection in the negative pressure control component. Even in oily environments, it can increase friction and achieve a tight and reliable clamping effect, thus enhancing the adaptability of the device to different working conditions. Attached Figure Description

[0019] Figure 1 This is a perspective view of an automated CNC machine tool for automatic workpiece flipping proposed in this utility model; Figure 2 This is a front view of an automated CNC machine tool for automatic workpiece flipping proposed in this utility model; Figure 3 This is a cross-sectional view of an electric circular guide rail for an automated CNC machine tool with automatic workpiece flipping, as proposed in this utility model. Figure 4 This is an exploded view of the fixing frame of an automated CNC machine tool for automatic workpiece flipping proposed in this utility model; Figure 5 This is a cross-sectional view of the support frame of an automated CNC machine tool for automatic workpiece flipping proposed in this utility model.

[0020] Legend: 1. Base plate; 2. Support frame; 3. Tilting clamping mechanism; 301. Electric push rod; 302. Telescopic rod; 303. Electric circular guide rail; 304. Moving block; 305. Fixed frame; 306. Suction cup shell; 307. Negative pressure sensor; 308. One-way valve; 309. Anti-slip block; 310. Negative pressure control component; 3101. Electric vacuum pump; 3102. Vacuum hose; 4. Balancing mechanism; 401. Level; 402. Hydraulic cylinder; 403. Push rod; 404. Spherical joint; 405. Steering groove; 406. Infusion component; 4061. Oil tank; 4062. Hydraulic pump. Detailed Implementation

[0021] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0022] Example: Please refer to Figures 1 to 5 This utility model provides an automated CNC machine tool with automatic workpiece flipping, which aims to solve the problem that existing automated CNC machine tools lack an integrated structure that can automatically grab and flip workpieces, resulting in interruption of the processing flow, low efficiency, and lack of a structure to actively compensate for the horizontal posture of the machine tool, making it difficult to ensure stability during high-precision processing.

[0023] like Figure 1 and Figure 2 As shown, an automated CNC machine tool for automatic workpiece flipping includes a base plate 1 and a support frame 2 fixedly connected to the top of the base plate 1. The base plate 1 serves as the mounting base for the entire device, and the support frame 2 supports the subsequent flipping clamping mechanism 3 and balancing mechanism 4. The CNC machine tool also includes a flipping clamping mechanism 3, which is disposed on the outer wall of the support frame 2. Please refer to Figure 1 and Figure 3 The flipping clamping mechanism 3 includes: an electric push rod 301, which is fixed to the front and rear sides of the inner wall of the support frame 2; a telescopic rod 302, which is also fixed to the front and rear sides of the inner wall of the support frame 2; an electric annular guide rail 303, which is movably connected to one end of the electric push rod 301 and the telescopic rod 302 on the corresponding side; the electric annular guide rail 303 can move in the front and rear direction under the drive of the electric push rod 301 and the guidance and support of the telescopic rod 302; and an opposing moving block 304, which is slidably connected to the inner wall of the electric annular guide rail 303. Please refer to Figure 4The flipping clamping mechanism 3 also includes a fixed frame 305 and a suction cup shell 306. The fixed frame 305 is fixedly connected between at least two opposing moving blocks 304, and the suction cup shell 306 is fixedly connected to the inner wall of the fixed frame 305. During operation, the electric annular guide rail 303 is also used to drive the moving blocks 304 to rotate after startup. The moving blocks 304 then drive the fixed frame 305 to rotate, thereby causing the workpiece clamped by the suction cup shell 306 to flip.

[0024] Please refer to Figure 3 and Figure 4 To achieve reliable clamping of the workpiece, the flipping clamping mechanism 3 also includes a negative pressure control component 310. A negative pressure sensor 307 is fixedly connected to the inner wall of the suction cup shell 306, and a one-way valve 308 is fixedly connected to the outer wall of the suction cup shell 306. The negative pressure control component 310 communicates with the interior of the suction cup shell 306 through the one-way valve 308 to extract gas from the suction cup shell 306. The negative pressure sensor 307 is used to detect the negative pressure value inside the suction cup shell 306 to clamp the workpiece tightly. The negative pressure control component 310 includes an electric vacuum pump 3101 and a vacuum hose 3102. The electric vacuum pump 3101 is fixedly connected to the bottom front and rear sides of the support frame 2 and communicates with the vacuum hose 3102. The vacuum hose 3102 is communicated with the one-way valve 308. Multiple anti-slip blocks 309 are fixedly connected to the outer wall of the suction cup shell 306. The anti-slip blocks 309 are used to increase the friction between the suction cup shell 306 and the workpiece when they come into contact, and can still clamp the workpiece even when there is lubricating oil on the surface of the workpiece.

[0025] Please refer to Figure 1 , Figure 2 and Figure 5 The balancing mechanism 4 is fixedly connected to the top of the base plate 1 and located between the support frame 2 and the base plate 1. The balancing mechanism 4 includes a level 401 fixed to the bottom of the support frame 2 and multiple hydraulic cylinders 402 set on the base plate 1. The level 401 is used to detect the balance of the support frame 2 in real time. The balancing mechanism 4 also includes a push rod 403, which is set on the top of the hydraulic cylinders 402 and is used to perform telescopic movement under the drive of the hydraulic cylinders 402. A spherical joint 404 is fixedly connected to the top of the push rod 403. A steering groove 405 is opened at the bottom of the support frame 2 corresponding to the position of the spherical joint 404. The balancing mechanism 4 is rotatably housed in the steering groove 405. The balancing mechanism 4 also includes a fluid delivery assembly 406, which is connected to multiple hydraulic cylinders 402. The fluid delivery assembly 406 is used to start and deliver hydraulic oil to the hydraulic cylinder 402 at the corresponding position when the level 401 detects a deviation in balance. The fluid delivery assembly 406 includes an oil tank 4061 and a hydraulic pump 4062. The outlet of the hydraulic pump 4062 is connected to the hydraulic cylinder 402, and the inlet of the hydraulic pump 4062 is connected to the oil tank 4061. The hydraulic pump 4062 is used to extract the hydraulic oil in the oil tank 4061 and deliver it to the hydraulic cylinder 402 after controlled start.

[0026] In a preferred embodiment, in order to achieve reliable vacuum adsorption of the workpiece, the flipping clamping mechanism 3 further includes a negative pressure control component 310. A negative pressure sensor 307 is fixedly connected to the inner wall of the suction cup shell 306, and a one-way valve 308 is fixedly connected to the outer wall of the suction cup shell 306. The negative pressure control component 310 communicates with the interior of the suction cup shell 306 through the one-way valve 308 to extract gas from the suction cup shell 306. The negative pressure sensor 307 is used to detect the negative pressure value inside the suction cup shell 306 to tightly clamp the workpiece.

[0027] In a preferred embodiment, in order to provide a vacuum power source, the negative pressure control component 310 specifically includes an electric vacuum pump 3101 and a vacuum hose 3102. The electric vacuum pump 3101 is fixedly connected to the bottom front and rear sides of the support frame 2 and is connected to the vacuum hose 3102. The vacuum hose 3102 is connected to the one-way valve 308.

[0028] In a preferred embodiment, in order to enhance the clamping friction, a plurality of anti-slip blocks 309 are fixedly connected to the outer wall of the suction cup housing 306. The anti-slip blocks 309 are used to increase the friction between the suction cup housing 306 and the workpiece when they come into contact, and can still clamp the workpiece even when there is lubricating oil on the workpiece surface.

[0029] In a preferred embodiment, in order to achieve dynamic balance of the machine tool, the CNC machine tool also includes a balancing mechanism 4. The balancing mechanism 4 is fixedly connected to the top of the base plate 1 and located between the support frame 2 and the base plate 1. The balancing mechanism 4 includes a level 401 fixed to the bottom of the support frame 2 and a plurality of hydraulic cylinders 402 set on the base plate 1. The level 401 is used to detect the balance of the support frame 2 in real time.

[0030] In a preferred embodiment, in order to achieve precise lifting adjustment, the balancing mechanism 4 also includes a push rod 403. The push rod 403 is disposed on the top of the hydraulic cylinder 402 and is used to perform telescopic movement under the drive of the hydraulic cylinder 402. The top end of the push rod 403 is fixedly connected to a spherical joint 404. The bottom of the support frame 2 is provided with a steering groove 405 corresponding to the position of the spherical joint 404. The spherical joint 404 is rotatably accommodated in the steering groove 405.

[0031] In a preferred embodiment, to provide hydraulic control, the balancing mechanism 4 further includes a fluid delivery assembly 406, which is connected to a plurality of hydraulic cylinders 402. The fluid delivery assembly 406 is used to activate and deliver hydraulic oil to the hydraulic cylinders 402 at the corresponding positions when the level 401 detects a deviation in balance.

[0032] In a preferred embodiment, in order to realize the delivery of hydraulic oil, the fluid delivery assembly 406 specifically includes an oil tank 4061 and a hydraulic pump 4062. The outlet of the hydraulic pump 4062 is connected to the hydraulic cylinder 402, and the inlet of the hydraulic pump 4062 is connected to the oil tank 4061. The hydraulic pump 4062 is used to extract the hydraulic oil in the oil tank 4061 and deliver it to the hydraulic cylinder 402 after controlled start.

[0033] Working principle: When the device clamps and flips the workpiece on the surface of the conveying structure, it activates the electric push rods 301 fixed to the front and rear sides of the inner wall of the support frame 2. This allows the electric circular guide rail 303 to move back and forth under the guidance and support of the electric push rods 301 on the corresponding side and the telescopic rods 302 also fixed to the front and rear sides of the inner wall of the support frame 2. At least two opposing moving blocks 304 are slidably connected to the inner wall of the electric circular guide rail 303. A fixed frame 305 is fixedly connected between the at least two moving blocks 304. A suction cup shell 306 is fixedly connected to the inner wall of the fixed frame 305. When the device moves to the appropriate position, the adjacent side of the front and rear suction cup shells 306 contacts the workpiece, and multiple anti-slip blocks 306 fixed to the outer wall of the suction cup shell 306 are used to move the workpiece. 09. To increase the friction with the workpiece and enable clamping even when there is lubricating oil on the workpiece surface, the electric vacuum pump 3101 fixed to the front and rear sides of the bottom of the support frame 2 is started. The electric vacuum pump 3101 is connected to the vacuum hose 3102, which is in turn connected to the one-way valve 308 fixedly connected to the outer wall of the suction cup shell 306. The electric vacuum pump 3101 can use the vacuum hose 3102 to extract the gas in the suction cup shell 306. Under the detection of the negative pressure sensor 307 fixed to the inner wall of the suction cup shell 306, the workpiece is tightly clamped. After the workpiece is tightly clamped, the electric ring guide rail 303 is started, so that at least two moving blocks 304 can drive the fixed frame 305 to rotate, thereby driving the workpiece to flip. During operation, the device utilizes a level 401 fixed to the bottom of the support frame 2 in the balancing mechanism 4 to monitor the balance of the support frame 2 in real time. When a deviation occurs in the balance, the hydraulic pump 4062 in the infusion assembly 406 is activated, allowing the hydraulic pump 4062 to extract hydraulic oil from the corresponding oil tank 4061 and deliver it to the corresponding hydraulic cylinder 402. This, in turn, drives the push rod 403 at the top of the hydraulic cylinder 402 to extend and retract. Since the top of the push rod 403 is fixedly connected to a spherical joint 404, and the bottom of the support frame 2 at the corresponding position of the top of the spherical joint 404 is provided with a steering groove 405, the push rods 403 of multiple hydraulic cylinders 402 can adjust the balance of the support frame 2 when they move. This allows the device to maintain the overall stability of the automated CNC machine tool by utilizing the cooperation of the various components of the balancing mechanism 4.

Claims

1. An automated CNC machine tool for automatically flipping workpieces, comprising: A base plate (1) and a support frame (2), wherein the support frame (2) is fixedly connected to the top of the base plate (1); The CNC machine tool is characterized by further including a flip-clamping mechanism (3), which is disposed on the outer wall of the support frame (2). The flip-clamping mechanism (3) includes: an electric push rod (301), a telescopic rod (302), an electric annular guide rail (303), a moving block (304), a fixed frame (305), and a suction cup shell (306). The electric push rod (301) is fixed on the front and rear sides of the inner wall of the support frame (2), and the telescopic rod (302) is also fixed on the front and rear sides of the inner wall of the support frame (2). The electric annular guide rail (303) is movably connected to the electric push rod (301) and the telescopic rod (302) on the corresponding side. At one end, the electric ring guide rail (303) can move back and forth under the drive of the electric push rod (301) and the guidance and support of the telescopic rod (302). The moving block (304) is slidably connected to the inner wall of the electric ring guide rail (303). The fixed frame (305) is fixedly connected between the moving blocks (304). The suction cup shell (306) is fixedly connected to the inner wall of the fixed frame (305). The electric ring guide rail (303) is also used to drive the moving block (304) to rotate after starting. The moving block (304) drives the fixed frame (305) to rotate, thereby causing the workpiece held by the suction cup shell (306) to flip.

2. The automated CNC machine tool for automatic workpiece flipping according to claim 1, characterized in that, The flipping clamping mechanism (3) further includes a negative pressure control component (310). A negative pressure sensor (307) is fixedly connected to the inner wall of the suction cup shell (306), and a one-way valve (308) is fixedly connected to the outer wall of the suction cup shell (306). The negative pressure control component (310) communicates with the interior of the suction cup shell (306) through the one-way valve (308) to extract gas from the suction cup shell (306). The negative pressure sensor (307) is used to detect the negative pressure value inside the suction cup shell (306) to clamp the workpiece tightly.

3. The automated CNC machine tool for automatic workpiece flipping according to claim 2, characterized in that, The negative pressure control component (310) includes an electric vacuum pump (3101) and a vacuum hose (3102). The electric vacuum pump (3101) is fixedly connected to the bottom front and rear sides of the support frame (2) and communicates with the vacuum hose (3102). The vacuum hose (3102) is communicated with the one-way valve (308).

4. The automated CNC machine tool for automatic workpiece flipping according to claim 1, characterized in that, The outer wall of the suction cup shell (306) is fixedly connected with a plurality of anti-slip blocks (309). The anti-slip blocks (309) are used to increase the friction between the suction cup shell (306) and the workpiece when they come into contact, and can still clamp the workpiece even when there is lubricating oil on the surface of the workpiece.

5. An automated CNC machine tool for automatic workpiece flipping according to claim 1, characterized in that, The CNC machine tool also includes a balancing mechanism (4), which is fixedly connected to the top of the base plate (1) and located between the support frame (2) and the base plate (1). The balancing mechanism (4) includes a level (401) fixed to the bottom of the support frame (2) and a plurality of hydraulic cylinders (402) set on the base plate (1). The level (401) is used to detect the balance of the support frame (2) in real time.

6. An automated CNC machine tool for automatic workpiece flipping according to claim 5, characterized in that, The balancing mechanism (4) further includes a push rod (403), which is located on the top of the hydraulic cylinder (402) and is used to perform telescopic movement under the drive of the hydraulic cylinder (402). A spherical joint (404) is fixedly connected to the top of the push rod (403). A steering groove (405) is provided at the bottom of the support frame (2) corresponding to the position of the spherical joint (404). The spherical joint (404) is rotatably accommodated in the steering groove (405).

7. An automated CNC machine tool for automatic workpiece flipping according to claim 5, characterized in that, The balancing mechanism (4) further includes an infusion assembly (406), which is connected to the plurality of hydraulic cylinders (402). The infusion assembly (406) is used to start and deliver hydraulic oil to the hydraulic cylinder (402) at the corresponding position when the level (401) detects a deviation in balance.

8. An automated CNC machine tool for automatic workpiece flipping according to claim 7, characterized in that, The infusion assembly (406) includes an oil tank (4061) and a hydraulic pump (4062). The outlet of the hydraulic pump (4062) is connected to the hydraulic cylinder (402), and the inlet of the hydraulic pump (4062) is connected to the oil tank (4061). The hydraulic pump (4062) is used to extract hydraulic oil from the oil tank (4061) and deliver it to the hydraulic cylinder (402) after controlled start-up.

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