CNC (computer numerical control) machine tool

Abstract

The utility model discloses a CNC numerical control machine tool, and belongs to the technical field of numerical control machine tools. In order to solve the problem that an existing product is complex in structure, the following technical scheme is provided, the machine tool comprises a machine tool base, a containing plate is connected to the upper end of the machine tool base, a positioning fixing piece is fixedly connected to the containing plate, a movable fixing piece is slidably connected to the containing plate, and a cleaning mechanism is arranged on the movable fixing piece. By arranging the cleaning mechanism, the surface of an article can be automatically cleaned before machining, workers do not need to manually clean the article in advance, time and labor are saved, meanwhile, dust on the surface of the article is prevented from influencing machining, machining precision is guaranteed, the cleaning mechanism can be tightly attached to the surface of the article by arranging a spring, and machining efficiency is improved. And finally, a driving mechanism is arranged, so that the device can fix to-be-processed objects with different sizes, and the practicability of the device is improved to a great extent.

Description

Technical Field

[0001] The utility model relates to the technical field of numerical control machine tools, and particularly relates to a CNC numerical control machine tool. Background Technique

[0002] A numerical control machine tool is a digitally controlled machine tool, which is an automated machine tool equipped with a program control system. This control system can logically process a program with control codes or other symbolic instructions, decode it, represent it in coded numbers, and input it into the numerical control device through an information carrier. After arithmetic processing, the numerical control device sends out various control signals to control the actions of the machine tool, and automatically processes the parts according to the shape and size required by the drawing. The numerical control machine tool preferably solves the problems of processing complex, precise, small-batch, and multi-variety parts. It is a flexible and high-efficiency automated machine tool, representing the development direction of modern machine tool control technology, and is a typical mechatronic product. Since the parts to be processed are different, their lengths are also different. Due to the limited length of the traditional fixed structure of the numerical control machine tool, it cannot adjust the length according to the size of the parts, and the existing numerical control machine tools are not convenient for fixing parts of different sizes.

[0003] To solve the above problems, a prior patent (Publication No.: CN210756743U) discloses a high-precision CNC numerical control machine tool. By setting a fixed block, a hydraulic cylinder is fixedly installed in the cavity. The output shaft of the hydraulic cylinder extends into the working cavity, and a clamping block is fixedly installed at one end of the output shaft of the hydraulic cylinder. The distance between the clamping block and the fixed block can be adjusted by the hydraulic cylinder, which is convenient for adjusting the distance according to parts of different sizes. A spring is also fixedly installed in the clamping block, and an extrusion plate is provided at the bottom of the spring, which can give a squeezing force to the part and improve the fixing effect on the part.

[0004] However, during the use of the numerical control machine tool in the above-mentioned published document, it cannot automatically clean the surface of the processed article. Before processing, the staff needs to manually clean the surface of the article, which is time-consuming and laborious, and the dust and debris on its surface will have a certain impact on the processing accuracy, which is very inconvenient.

[0005] Therefore, the technical personnel in this field provide a CNC numerical control machine tool to solve the problems raised in the above background technique. Content of the Utility Model

[0006] To overcome the above defects of the prior art, an embodiment of the present utility model provides a CNC numerical control machine tool. By setting a cleaning mechanism, the surface of an object can be automatically cleaned before processing, eliminating the need for manual cleaning by staff in advance, saving time and effort. At the same time, it also avoids the impact of dust on the surface of the object on processing and ensures processing accuracy. Secondly, by setting springs, the cleaning mechanism can closely adhere to the surface of the object, improving the cleaning effect. Finally, by setting a driving mechanism, the device can fix objects of different sizes to be processed, greatly improving the practicality of the device to solve the problems raised in the above background technology.

[0007] To achieve the above object, the present utility model provides the following technical solutions:

[0008] A CNC numerical control machine tool includes a machine tool base. A placement plate is connected to the upper end of the machine tool base. A positioning fixture is fixedly connected to the placement plate. A movable fixture is slidably connected to the placement plate. A cleaning mechanism is provided on the movable fixture. The cleaning mechanism includes a bottom plate fixedly connected to the upper end of the movable fixture. An electric telescopic rod is fixedly connected to the bottom plate. A movable strip is fixedly connected to the electric telescopic rod. Both ends of the movable strip penetrate and are slidably connected to a moving rod. An arc-shaped strip is fixedly connected to the lower end of the moving rod. Square plates are fixedly connected to both sides of the moving rod. Guide columns are fixedly connected to the upper ends of the square plates. Springs are sleeved on the guide columns.

[0009] As a further scheme of the present utility model, a connecting plate is fixedly connected between the two moving rods. A cleaning cotton is fixedly connected to the lower end of the connecting plate. The lowermost end of the cleaning cotton is at the same horizontal plane as the lowermost end of the arc-shaped strip.

[0010] As a further scheme of the present utility model, a control switch is provided on the movable fixture. The control switch is electrically connected to the electric telescopic rod.

[0011] As a further scheme of the present utility model, an L-shaped frame is fixedly connected to the machine tool base. A driving mechanism is provided on the L-shaped frame. The driving mechanism includes a second wheel rotatably connected inside the L-shaped frame. A reciprocating lead screw is fixedly connected to the second wheel. The reciprocating lead screw penetrates to the outside of the L-shaped frame and is in transmission connection with the movable fixture through a threaded sleeve.

[0012] As a further scheme of the present utility model, the driving mechanism further includes a driving motor provided on the L-shaped frame. The output shaft of the driving motor penetrates to the inside of the L-shaped frame and is connected to a first wheel. The first wheel and the second wheel are connected by a belt. There are two second wheels, respectively located on both sides of the first wheel, and both are connected by a belt.

[0013] As a further solution of the present utility model, a first movable frame is slidably connected to the machine tool base, a workpiece is slidably connected to the first movable frame, and a control member is fixedly connected to the side wall of the first movable frame.

[0014] Compared with the prior art, the beneficial effects of the present utility model are as follows:

[0015] By providing a cleaning mechanism, the surface of the article can be automatically cleaned before processing, eliminating the need for manual cleaning by the staff in advance, saving time and effort. At the same time, it also avoids the influence of dust on the surface of the article on processing and ensures processing accuracy. Secondly, by providing a spring, the cleaning mechanism can closely adhere to the surface of the article, improving the cleaning effect. Finally, by providing a driving mechanism, the device can fix workpieces of different sizes to be processed, greatly improving the practicality of the device. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a three-dimensional structural schematic diagram of a CNC machine tool;

[0017] Figure 2 It is Figure 1 the left view structural schematic diagram of;

[0018] Figure 3 It is Figure 2 the enlarged structural schematic diagram at A of;

[0019] Figure 4 It is Figure 2 the enlarged structural schematic diagram at B of;

[0020] Figure 5 It is Figure 4 the three-dimensional structural schematic diagram of the moving rod of;

[0021] Figure 6 It is Figure 1 the three-dimensional structural schematic diagram of the L-shaped frame of.

[0022] In the figure: 1, machine tool base; 2, first movable frame; 3, workpiece; 4, placing plate; 5, control member; 6, L-shaped frame; 7, driving motor; 8, first pulley; 9, second pulley; 10, belt; 11, reciprocating lead screw; 12, movable fastener; 13, bottom plate; 14, control switch; 15, electric telescopic rod; 16, movable strip; 17, moving rod; 18, arc-shaped strip; 19, connecting plate; 20, cleaning cotton; 21, square plate; 22, guiding column; 23, positioning fastener; 24, spring. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0023] Please refer to Figures 1 to 6, in the embodiment of the present utility model, a CNC machine tool includes a machine tool base 1. A first movable frame 2 is slidably connected to the machine tool base 1, and the first movable frame 2 can move along the machine tool base 1. A workpiece 3 is slidably connected to the first movable frame 2, and the workpiece 3 can move along the first movable frame 2, so as to realize machining at different positions. A placing plate 4 is arranged on the machine tool base 1, and articles to be machined are placed on the placing plate 4. A control member 5 is arranged on the first movable frame 2, and the control member 5 can set relevant data of the machine tool.

[0024] A positioning fixture 23 is fixedly connected to the upper end of the placing plate 4, and a movable fixture 12 is also slidably connected. The movable fixture 12 and the positioning fixture 23 can clamp and fix the articles on the placing plate 4 from both ends. An L-shaped frame 6 is fixedly connected to the machine tool base 1. A driving motor 7 is arranged on the L-shaped frame 6. The output shaft of the driving motor 7 penetrates into the interior of the L-shaped frame 6 and is connected to a first pulley 8. Two second pulleys 9 are rotatably connected inside the L-shaped frame 6. The two second pulleys 9 are respectively located on both sides of the first pulley 8, and the three are connected by a belt 10. A reciprocating lead screw 11 is fixedly connected to the second pulley 9. The reciprocating lead screw 11 is in transmission connection with the movable fixture 12 through a threaded sleeve. When the driving motor 7 drives the first pulley 8 to work, the second pulley 9 is driven to rotate synchronously through the belt 10, and then the movable fixture 12 is driven to move through the reciprocating lead screw 11, so as to adjust the distance between the movable fixture 12 and the positioning fixture 23, enabling the two to fix articles of different sizes.

[0025] A bottom plate 13 is fixedly connected to the upper end of the movable fixture 12. An electric telescopic rod 15 is fixedly connected to the bottom plate 13. The movable end of the electric telescopic rod 15 is fixedly connected to a movable strip 16. When the electric telescopic rod 15 is energized to work, it will drive the movable strip 16 to move. The two ends of the movable strip 16 respectively penetrate and are slidably connected to two moving rods 17. The lower ends of the moving rods 17 are fixedly connected to arc-shaped strips 18. Square plates 21 are fixedly connected to the outer walls of the moving rods 17. Guide columns 22 are fixedly connected to the upper ends of the square plates 21. Guide grooves adapted to the guide columns 22 are formed inside the movable strip 16. Springs 24 are sleeved on the guide columns 22. When the guide columns 22 move along the guide grooves, the springs 24 will be compressed.

[0026] A connecting plate 19 is connected between the two moving rods 17. A cleaning cotton 20 is fixedly connected to the lower end of the connecting plate 19. When the connecting plate 19 moves following the movable strip 16, it will drive the cleaning cotton 20 to move synchronously. When the cleaning cotton 20 moves, it will wipe the surface of the article above the placing plate 4, facilitating subsequent machining of the article by the machine tool.

[0027] A control switch 14 is arranged on the movable fixture 12. When the movable fixture 12 contacts the article, the control switch 14 closes, enabling the electric telescopic rod 15 to start working.

[0028] The working principle of the present utility model is as follows: When it is necessary to use the machine tool to process an article, first place the article to be processed on the placing plate 4, and make one side of the article contact and be limited by the positioning fixture 23. At this time, the driving motor 7 starts to work. When the driving motor 7 works, it will drive the first wheel 8 to rotate synchronously. Under the action of the belt 10, it will drive the second wheels 9 on both sides to rotate synchronously. When the second wheels 9 rotate, they will drive the reciprocating lead screw 11 to rotate, thereby pushing the movable fixture 12 slidably connected to the placing plate 4 to move until the movable fixture 12 contacts the article and stops, and the driving motor 7 stops working. At this time, the movable fixture 12 and the positioning fixture 23 can complete the fixation of the article. When the movable fixture 12 contacts the article, the control switch 14 closes, causing the electric telescopic rod 15 to start working. The electric telescopic rod 15 drives the movable bar 16 to move. When the movable bar 16 moves, it will make the arc-shaped bar 18 contact the surface of the article, thereby pushing the arc-shaped bar 18 to move upward. When the arc-shaped bar 18 moves upward, it will drive the moving rod 17 and the square plate 21 to move upward, thereby squeezing the spring 24. Under the limitation of the spring 24, at this time, the arc-shaped bar 18 will closely adhere to the upper surface of the article, so that the cleaning cotton 20 connected to the moving rod 17 will closely adhere to the article. Then, under the action of the movable bar 16, the cleaning cotton 20 will move along the surface of the article to realize the cleaning of the upper surface of the article, facilitating subsequent processing.

[0029] The above is only the preferred specific implementation manner of the present utility model, but the protection scope of the present utility model is not limited thereto. Any person skilled in the art within the technical scope disclosed by the present utility model, according to the technical solution of the present utility model and its inventive concept, makes equivalent replacements or changes, and should be covered by the protection scope of the present utility model.

Claims

1. A CNC machine tool, comprising a machine tool base (1), wherein the upper end of the machine tool base (1) is connected to a placement plate (4), characterized in that: The placement plate (4) is fixedly connected with a positioning fixture (23), the placement plate (4) is slidably connected with a movable fixture (12), the movable fixture (12) is provided with a cleaning mechanism, the cleaning mechanism comprises a bottom plate (13) fixedly connected to the upper end of the movable fixture (12), the bottom plate (13) is fixedly connected with an electric telescopic rod (15), the electric telescopic rod (15) is fixedly connected with a movable bar (16), both ends of the movable bar (16) are penetrated and slidably connected with a moving rod (17), the lower end of the moving rod (17) is fixedly connected with an arc strip (18), both sides of the moving rod (17) are fixedly connected with a square plate (21), the upper end of the square plate (21) is fixedly connected with a guide column (22), and a spring (24) is sleeved on the guide column (22).

2. A CNC machine tool according to claim 1, characterized in that: A connecting plate (19) is fixedly connected between the two moving rods (17), and a cleaning cotton (20) is fixedly connected to the lower end of the connecting plate (19), and the lowermost end of the cleaning cotton (20) is in the same horizontal plane as the lowermost end of the arc strip (18).

3. A CNC machine tool according to claim 2, characterized in that: The movable fixture (12) is provided with a control switch (14), and the control switch (14) is electrically connected to the electric telescopic rod (15).

4. A CNC machine tool according to claim 1, characterized in that: An L-shaped frame (6) is fixedly connected to the machine tool base (1), and a driving mechanism is arranged on the L-shaped frame (6). The driving mechanism comprises a No. 2 wheel (9) rotatably connected to the inside of the L-shaped frame (6), and a reciprocating screw rod (11) is fixedly connected to the No. 2 wheel (9), and the reciprocating screw rod (11) passes through the outside of the L-shaped frame (6) and is transmission-connected to a movable fastener (12) via a threaded sleeve.

5. A CNC machine tool according to claim 4, characterized in that: The driving mechanism further comprises a driving motor (7) arranged on the L-shaped frame (6); an output shaft of the driving motor (7) penetrates the interior of the L-shaped frame (6) and is connected to a number one wheel (8); the number one wheel (8) is connected to a number two wheel (9) via a belt (10); two number two wheels (9) are provided, respectively located on both sides of the number one wheel (8), and both are connected via the belt (10).

6. A CNC machine tool according to claim 1, characterized in that: A first movable frame (2) is slidably connected to the machine tool base (1), a processing piece (3) is slidably connected to the first movable frame (2), and a control piece (5) is fixedly connected to the side wall of the first movable frame (2).

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