Multi-angle positioning device for machining central spindle of numerical control machine tool

Abstract

The utility model provides a multi-angle positioning device for machining a spindle of a numerical control machine tool, which belongs to the technical field of mechanical manufacturing and comprises a working platform, a machine body is fixedly connected to the upper surface of the working platform, a hollow shaft is rotatably connected to the side face of the machine body in a penetrating manner, and a three-jaw chuck is fixedly connected to one end of the hollow shaft. Two guide rails are symmetrically and fixedly connected to the upper surface of the working platform, the two guide rails are arranged on the upper surface of the working platform in parallel, a sliding block is slidably connected to the two guide rails, a moving plate is fixedly connected to the sliding block, and a vertical plate is fixedly connected to the upper surface of the moving plate; and the upper surface of the moving plate is fixedly connected with a motor. By arranging the shaft end positioning device, the long mandrel can be prevented from jumping in the machining process, errors in the machining process are reduced as much as possible, the positioning device can be rapidly moved to the position needing to be positioned through the automatic moving device, time is saved, and efficiency is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of mechanical manufacturing, in particular to a multi-angle positioning device for machining a core shaft of a numerically controlled machine tool. Background Art

[0002] A CNC machine tool is an automated machine tool equipped with a program control system. The control system can logically process programs specified by control codes or other symbolic instructions, decode them, and represent them in coded digital form. The information is input into the CNC device through an information carrier, and the CNC device sends out various control signals after calculation and processing to control the operation of the machine tool. The parts are automatically processed according to the shape and size required by the drawing. CNC machine tools have better solved the problems of complex, precise, small batch, and multi-variety parts processing. They are flexible and high-efficiency automated machine tools, representing the development direction of modern machine tool control technology, and are a typical mechatronics product.

[0003] For the processing of the mandrel, a general short shaft is fixed at one end by a three-jaw chuck, and then the mandrel is processed by a turning tool. However, if the mandrel is too long, it will jump during the rotation of the three-jaw chuck, resulting in a large deviation in the processed mandrel. Utility Model Content

[0004] The purpose of the utility model is to solve the problems raised in the above background technology, and to propose a multi-angle positioning device for machining a core shaft of a numerically controlled machine tool.

[0005] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0006] A multi-angle positioning device for processing a CNC machine tool spindle comprises a working platform, the upper surface of the working platform is fixedly connected to a machine body, a hollow shaft is rotatably connected to the side of the machine body, a three-jaw chuck is fixedly connected to one end of the hollow shaft, two guide rails are symmetrically fixedly connected to the upper surface of the working platform, the two guide rails are arranged parallel to each other on the upper surface of the working platform, sliders are slidably connected to the two guide rails, a moving plate is fixedly connected to the slider, a vertical plate is fixedly connected to the upper surface of the moving plate, a motor is fixedly connected to the upper surface of the moving plate, the output end of the motor is rotatably connected to the moving plate, and a gear is fixedly connected to the output end of the motor.

[0007] Preferably, a rack is fixedly connected to the upper surface of the working platform, the rack is located between two slide rails, and the gear and the rack are meshed.

[0008] Preferably, the motor is located on one side of the vertical plate, and the motor does not contact the vertical plates.

[0009] Preferably, a screw nut is fixedly connected to the side of the vertical plate, the internal thread of the screw nut is connected to a screw, the screw passes through and is rotatably connected to the vertical plate, one end of the screw is fixedly connected to a pin, the other end of the screw is fixedly connected to a turntable, and the side of the turntable is fixedly connected to a rocker.

[0010] Preferably, the inner diameter of the screw nut is concentric with the inner diameter of the three-jaw chuck.

[0011] Preferably, the guide rail is located on one side of the fuselage, and the guide rail is parallel to the generatrix of the hollow shaft.

[0012] Compared with the prior art, the utility model has the following advantages:

[0013] The utility model can prevent a longer mandrel from jumping during processing by arranging a shaft end positioning device, thereby minimizing errors during processing; and the positioning device can be quickly moved to a position where positioning is required by an automatic moving device, thereby saving time and improving efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 This is a schematic diagram of the structure of a multi-angle positioning device for CNC machine tool spindle processing proposed by the utility model;

[0015] Figure 2 This is a right side structural schematic diagram of a multi-angle positioning device for CNC machine tool spindle processing proposed by the utility model;

[0016] Figure 3 The utility model is a schematic diagram of the left side structure of a multi-angle positioning device for machining a core shaft of a CNC machine tool.

[0017] In the figure: 1 working platform, 2 fuselage, 3 guide rail, 4 slider, 5 moving plate, 6 vertical plate, 7 rack, 8 gear, 9 motor, 10 three-jaw chuck, 11 hollow shaft, 12 lead screw nut, 13 lead screw, 14 ejector pin, 15 turntable, 16 rocker. DETAILED DESCRIPTION

[0018] The technical solution of the present utility model is further described below in conjunction with the accompanying drawings and embodiments.

[0019] Reference Figure 1-Figure 3A multi-angle positioning device for machining a core shaft of a numerically controlled machine tool comprises a working platform 1, the upper surface of the working platform 1 is fixedly connected with a machine body 2, a hollow shaft 11 is rotatably connected to the side of the machine body 2, a three-jaw chuck 10 is fixedly connected to one end of the hollow shaft 11, and the three-jaw chuck 10 rotates together with the rotation of the hollow shaft 11 to realize the rotation of the core shaft during the machining process, two guide rails 3 are symmetrically fixedly connected to the upper surface of the working platform 1, the two guide rails 3 are arranged parallel to each other on the upper surface of the working platform 1, the guide rails 3 are located on one side of the machine body 2, the guide rails 3 and the generatrix of the hollow shaft 11 are parallel, a slider 4 is slidably connected to the two guide rails 3, a moving plate 5 is fixedly connected to the slider 4, a vertical plate 6 is fixedly connected to the upper surface of the moving plate 5, and the side of the vertical plate 6 A screw nut 12 is fixedly connected, and the inner diameter of the screw nut 12 is concentrically arranged with the inner diameter of the three-jaw chuck 10. The inner thread of the screw nut 12 is connected to the screw rod 13, and the screw rod 13 penetrates and is rotatably connected in the vertical plate. One end of the screw rod 13 is fixedly connected to a pin 14, and the other end of the screw rod 13 is fixedly connected to a turntable 15. The side of the turntable 15 is fixedly connected to a rocker 16. When the rocker 16 is rotated, the rocker 16 drives the turntable 15 to rotate, and the turntable 15 drives the screw rod 13 to rotate. Since the screw rod 13 is threadedly connected to the screw nut 12, the screw rod will drive the pin 14 to move horizontally, thereby fixing one end of the core shaft. By setting the shaft end positioning device, the longer core shaft can be prevented from jumping during the processing, and the error during the processing can be minimized.

[0020] A motor 9 is fixedly connected to the upper surface of the movable plate 5. The motor 9 is located on one side of the vertical plate 6. The motor 9 does not contact the vertical plate 6. The output end of the motor 9 passes through and is rotatably connected to the movable plate 5. The output end of the motor 9 is fixedly connected to a gear 8. A rack 7 is fixedly connected to the upper surface of the working platform 1. The rack 7 is located between the two slide rails 3. The gear 8 and the rack 7 are meshed. When the motor 9 rotates, the motor drives the gear 8 to rotate. Since the gear 8 and the rack 7 are meshed, the rack 7 is fixed to the upper surface of the working platform 1 and is slidably connected to the guide rail 3 in cooperation with the slider 4 under the rotation of the motor 9, thereby driving the movable plate 5 to move horizontally. The positioning device can be quickly moved to the position where positioning is required through the automatic moving device, saving time and improving efficiency.

[0021] The functional principle of the utility model can be explained through the following operation modes:

[0022] First, fix one end of the mandrel in the three-jaw chuck 10, and then start the motor 9. When the motor 9 rotates, the motor drives the gear 8 to rotate. Since the gear 8 and the rack 7 are meshed, the rack 7 is fixed to the upper surface of the working platform 1, and then the motor rotates, the slider 4 is slidably connected to the guide rail 3, thereby driving the movable plate 5 to move horizontally, rotating the rocker 16, and the rocker 16 drives the turntable 15 to rotate, and the turntable 15 drives the screw rod 13 to rotate. Since the screw rod 13 is threadedly connected to the screw nut 12, the screw rod will drive the ejector pin 14 to move horizontally until the ejector pin 14 contacts one end of the mandrel. The mandrel is fixed by the ejector pin 14 to achieve multi-angle positioning. By setting the shaft end positioning device, the longer mandrel can be prevented from jumping during the processing process, and the error during the processing process can be minimized. The positioning device can be quickly moved to the position where positioning is required through the automatic moving device, saving time and improving efficiency.

[0023] Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of the utility model rather than to limit it. Although the utility model has been described in detail with reference to the preferred embodiments, ordinary technicians in the field should understand that the technical solution of the utility model can be modified or replaced by equivalents without departing from the purpose and scope of the technical solution of the utility model, which should be included in the scope of the claims of the utility model.

Claims

1. A multi-angle positioning device for CNC machine tool spindle processing, comprising a working platform (1), characterized in that: The upper surface of the working platform (1) is fixedly connected to a fuselage (2); a hollow shaft (11) is rotatably connected to the side of the fuselage (2); one end of the hollow shaft (11) is fixedly connected to a three-jaw chuck (10); two guide rails (3) are symmetrically fixedly connected to the upper surface of the working platform (1); the two guide rails (3) are arranged parallel to each other on the upper surface of the working platform (1); sliders (4) are slidably connected to the two guide rails (3); a moving plate (5) is fixedly connected to the slider (4); a vertical plate (6) is fixedly connected to the upper surface of the moving plate (5); a motor (9) is fixedly connected to the upper surface of the moving plate (5); an output end of the motor (9) is rotatably connected to the moving plate (5); and a gear (8) is fixedly connected to the output end of the motor (9).

2. A multi-angle positioning device for CNC machine tool spindle processing according to claim 1, characterized in that: A rack (7) is fixedly connected to the upper surface of the working platform (1); the rack (7) is located between two guide rails (3); and the gear (8) is meshed with the rack (7).

3. The multi-angle positioning device for CNC machine tool spindle processing according to claim 1, characterized in that: The motor (9) is located on one side of the vertical plate (6), and there is no contact between the motor (9) and the vertical plate (6).

4. The multi-angle positioning device for CNC machine tool spindle processing according to claim 1, characterized in that: A screw nut (12) is fixedly connected to the side of the vertical plate (6); the screw nut (12) is internally threadedly connected to a screw rod (13); the screw rod (13) penetrates and is rotatably connected to the vertical plate (6); one end of the screw rod (13) is fixedly connected to a thimble (14); the other end of the screw rod (13) is fixedly connected to a turntable (15); and a rocker (16) is fixedly connected to the side of the turntable (15).

5. The multi-angle positioning device for machining a CNC machine tool spindle according to claim 4, characterized in that: The inner diameter of the screw nut (12) is concentric with the inner diameter of the three-jaw chuck (10).

6. The multi-angle positioning device for machining a CNC machine tool spindle according to claim 1, characterized in that: The guide rail (3) is located on one side of the fuselage (2), and the generatrix of the guide rail (3) and the hollow shaft (11) are parallel.

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