Ultrasonic composite magnetic field auxiliary polishing device

Abstract

The utility model discloses an ultrasonic composite magnetic field auxiliary polishing device, and belongs to the field of precision machining of curved surfaces of complex structures. The device comprises a six-axis precision machine tool, an electric spindle, an ultrasonic vibration device, a multi-magnetic-pole coupling polishing device, a workpiece, a connecting clamping device and an industrial control host, the electric spindle is clamped on an A-axis indexing table of the machine tool, the ultrasonic vibration device is installed at the tail end of the electric spindle, and the multi-magnetic-pole coupling polishing device is installed at the lower end of the ultrasonic vibration device through a connecting sleeve. According to the types of magnetic poles, the multi-magnetic-pole coupling polishing device is divided into a permanent magnetic pole polishing device, an electromagnetic pole polishing device and a mixed magnetic pole polishing device. The industrial control host controls all the modules to achieve cooperative movement, the multi-magnetic-pole coupling polishing device generates a coupling rotating magnetic field, the ultrasonic vibration device enhances relative movement between the surface of a workpiece and a polishing medium, and the polishing consistency and the machining quality of a complex structure curved surface are improved.

Description

Technical Field

[0001] The utility model provides an ultrasonic composite magnetic field auxiliary polishing device, which belongs to the field of complex structure curved surface precision processing. Background Art

[0002] With the rapid development of high-tech such as aerospace, medical manufacturing, and precision equipment, higher requirements are placed on the ultra-precision processing of complex structural curved surface parts such as optical lenses, turbine blades, and artificial prostheses. Polishing, as the final link in the processing of parts, determines the surface quality of the parts. At present, magnetic field-assisted polishing technology is widely used in the polishing of complex structural curved surface parts due to the advantages of free abrasives such as adaptability and controllability. Its technologies mainly include magnetic grinding, magnetorheological polishing, magnetofluid polishing, and magnetic jet polishing. However, existing magnetic field-assisted polishing devices have problems such as easy surface damage, low processing accuracy and efficiency, and medium adhesion. In response to the above problems, the utility model proposes an ultrasonic composite magnetic field-assisted polishing device, which has important application value for the precision processing of complex structural curved surfaces. Utility Model Content

[0003] The utility model provides an ultrasonic composite magnetic field assisted polishing device, in which an industrial control host controls each module to complete the six-degree-of-freedom movement of the polishing device and the workpiece; a multi-pole coupled polishing device generates a coupled rotating magnetic field, so that the magnetic polishing medium is adsorbed in magnetic shield flow channels of different linear shapes and circulates; ultrasonic vibration enhances the relative movement between the workpiece surface and the polishing medium, thereby improving the surface quality of workpieces with complex curved structures.

[0004] The utility model provides an ultrasonic composite magnetic field assisted polishing device, and the technical solutions provided are as follows:

[0005] The ultrasonic composite magnetic field assisted polishing device includes a six-axis precision machine tool, an electric spindle, an ultrasonic vibration device, a multi-pole coupling polishing device, a workpiece, a connecting clamping device, and an industrial control host; the ultrasonic vibration device includes an upper support frame, a transducer rear cover plate, piezoelectric ceramics, an electrode sheet, a transducer front cover plate, an ultrasonic amplitude transformer, a lower support frame, and a connecting sleeve, and the ultrasonic amplitude transformer is fixedly supported by the upper support frame and the lower support frame. According to the type of magnetic poles, the multi-pole coupling polishing device is divided into a permanent magnetic pole polishing device, an electromagnetic magnetic pole polishing device and a hybrid magnetic pole polishing device, wherein the permanent magnetic pole polishing device includes a magnetic pole sleeve, a magnetic yoke, a magnetic pole and a magnetic protection cover, the magnetic pole is installed inside the magnetic pole sleeve, a magnetic yoke is installed on the magnetic pole, the magnetic protection cover is installed outside the magnetic pole sleeve, and the magnetic protection cover has flow channels of different linear types, including Archimedean spiral type and four-leaf rose type; the electromagnetic magnetic pole polishing device structure includes a magnetic pole sleeve, a second electromagnetic coil, a second iron core and a second magnetic protection cover; the hybrid magnetic pole polishing device structure includes a magnetic pole sleeve, a third electromagnetic coil, a third magnetic pole, a third magnetic yoke, a third iron core and a third magnetic protection cover. The six-axis precision machine tool adopts a gantry structure, including three movable axes X, Y, and Z and three rotating axes A, B, and C. The connecting clamping device is fixedly installed on the A-axis dividing table of the six-axis precision machine tool, the electric spindle is clamped on the connecting clamping device, the ultrasonic vibration device is installed at the end of the electric spindle, the multi-pole coupling polishing device is installed at the lower end of the ultrasonic vibration device through a connecting sleeve, and the workpiece is clamped on the C-axis turntable of the six-axis precision machine tool.

[0006] The present invention has the following obvious effects: 1. The ultrasonic composite magnetic field assisted polishing device described in the present invention generates a coupled rotating magnetic field through multi-pole coupling, so that the magnetic polishing medium is adsorbed in the magnetic shield flow channels of different linear shapes and circulates. It reduces medium loss and helps the medium to fit the workpiece surface. 2. The ultrasonic composite magnetic field assisted polishing device described in the present invention enhances the relative movement between the workpiece surface and the polishing medium by introducing ultrasonic vibration, thereby improving the polishing consistency and processing quality of parts with complex structural curved surfaces. 3. The ultrasonic composite magnetic field assisted polishing device described in the present invention controls the coordinated movement of each module through the industrial control host, thereby realizing different path processing of workpieces with complex structural curved surfaces, with a high degree of automation and effectively shortening the processing cycle. BRIEF DESCRIPTION OF THE DRAWINGS

[0007] Figure 1 This is a schematic diagram of the overall structure of an ultrasonic composite magnetic field assisted polishing device of the present utility model.

[0008] Figure 2 This is a structural schematic diagram of a permanent magnetic pole polishing device in an ultrasonic composite magnetic field assisted polishing device of the utility model.

[0009] Figure 3This is a structural schematic diagram of an electromagnetic pole polishing device in an ultrasonic composite magnetic field assisted polishing device of the utility model.

[0010] Figure 4 This is a structural schematic diagram of a mixed magnetic pole polishing device in an ultrasonic composite magnetic field assisted polishing device of the utility model.

[0011] Figure 5 This is a schematic structural diagram of an ultrasonic vibration device in an ultrasonic composite magnetic field assisted polishing device of the utility model. DETAILED DESCRIPTION

[0012] Specific implementation method 1: Combination Figure 1 、 Figure 2 、 Figure 3 、 Figure 4 、 Figure 5 The device described in this embodiment includes a six-axis precision machine tool (1-1), an electric spindle (1-2), an ultrasonic vibration device (1-3), a multi-pole coupling polishing device (1-4), a workpiece (1-5), a connecting clamping device (1-6), and an industrial control host (1-7); the ultrasonic vibration device (1-3) includes an upper support frame (5-1), a transducer rear cover plate (5-2), piezoelectric ceramics (5-3), an electrode sheet (5-4), a transducer front cover plate (5-5), an ultrasonic amplitude transformer (5-6), a lower support frame (5-7), and a connecting sleeve (5-8); the ultrasonic amplitude transformer (5-6) is fixedly supported by the upper support frame (5-1) and the lower support frame (5-7). The multi-pole coupling polishing device (1-4) is divided into a permanent magnetic pole polishing device, an electromagnetic magnetic pole polishing device and a hybrid magnetic pole polishing device, wherein the permanent magnetic pole polishing device comprises a magnetic pole sleeve (2-1), a magnetic yoke (2-2), a magnetic pole (2-3) and a magnetic shield (2-4), wherein the magnetic pole (2-3) is installed inside the magnetic pole sleeve (2-1), a magnetic yoke (2-2) is installed on the magnetic pole (2-3), and the magnetic shield (2-4) is installed on the magnetic pole sleeve (2-1). The outside of the magnetic shield (2-4) is provided with flow channels of different linear shapes, including an Archimedean spiral shape and a four-leaf rose shape; the electromagnetic pole polishing device structure includes a second magnetic pole sleeve (3-1), a second electromagnetic coil (3-2), a second iron core (3-3), and a second magnetic shield (3-4); the hybrid magnetic pole polishing device structure includes a third magnetic pole sleeve (4-1), a third electromagnetic coil (4-2), a third magnetic pole (4-3), a third magnetic yoke (4-4), a third iron core (4-5), and a third magnetic shield (4-6).

[0013] Specific implementation method 2: Combination Figure 1 、 Figure 2 、 Figure 3 、 Figure 4 、 Figure 5The six-axis precision machine tool (1-1) in this embodiment adopts a gantry structure, including three movable axes of X, Y, and Z and three rotating axes of A, B, and C. The connecting clamping device (1-6) is fixedly installed on the A-axis indexing table of the six-axis precision machine tool (1-1), the electric spindle (1-2) is clamped on the connecting clamping device (1-6), the ultrasonic vibration device (1-3) is installed at the end of the electric spindle (1-2), the multi-pole coupling polishing device (1-4) is installed at the lower end of the ultrasonic vibration device (1-3) through a connecting sleeve (5-8), and the workpiece (1-5) is clamped on the C-axis rotary table of the six-axis precision machine tool (1-1).

[0014] Specific implementation method three: Combination Figure 1 、 Figure 2 、 Figure 3 、 Figure 4 、 Figure 5 The polishing steps of this embodiment using the device described in any one of the specific embodiments 1, 2, and 3 are as follows:

[0015] (1) A workpiece (1-5) having a complex curved surface to be machined is clamped on a C-axis rotary table of a six-axis precision machine tool (1-1), and a suitable magnetic shield 1 (2-4), magnetic shield 2 (3-4) or magnetic shield 3 (4-6) and polishing medium are selected according to the surface machining requirements of the workpiece to be machined;

[0016] (2) According to the surface shape characteristics and surface processing requirements of the complex structure curved workpiece, the relevant parameters such as the processing path, spindle speed, feed speed, ultrasonic vibration frequency and processing gap are planned, and the parameters are input into the integrated control system of the industrial control host (1-7);

[0017] (3) According to the set processing parameters, the integrated control system controls the coordinated movement of the six-axis precision machine tool (1-1), the electric spindle (1-2), the multi-pole coupling polishing device (1-4) and the workpiece (1-5), and starts processing according to the planned processing path;

[0018] (4) During the machining process, the ultrasonic vibration device (1-3) drives the multi-pole coupling polishing device (1-4) to generate low-frequency vibration, thereby increasing the relative motion between the workpiece surface and the polishing medium, and improving the polishing consistency and surface quality of the complex structure surface.

[0019] The above-mentioned specific embodiments of the present invention are intended only to illustrate or explain the principles of the present invention and do not limit the scope of protection of the present invention. Therefore, without departing from the principles and scope of protection of the present invention, modifications, alterations, equivalent replacements, equivalent structures, and equivalent process changes to the present invention shall all be included within the scope of protection of the present invention.

Claims

1. An ultrasonic composite magnetic field assisted polishing device, characterized in that: The device comprises a six-axis precision machine tool (1-1), an electric spindle (1-2), an ultrasonic vibration device (1-3), a multi-pole coupling polishing device (1-4), a workpiece (1-5), a connecting clamping device (1-6), and an industrial control host (1-7); the ultrasonic vibration device (1-3) comprises an upper support frame (5-1), a transducer rear cover plate (5-2), piezoelectric ceramics (5-3), an electrode sheet (5-4), a transducer front cover plate (5-5), an ultrasonic amplitude transformer (5-6), a lower support frame (5-7), and a connecting sleeve (5-8); the ultrasonic amplitude transformer (5-6) is fixedly supported by the upper support frame (5-1) and the lower support frame (5-7); according to the type of magnetic pole, the multi-pole coupling polishing device (1-4) is divided into a permanent magnetic pole polishing device, an electromagnetic magnetic pole polishing device, and a hybrid magnetic pole polishing device, wherein the permanent magnetic pole polishing device The device comprises a magnetic pole sleeve (2-1), a magnetic yoke (2-2), a magnetic pole (2-3), and a magnetic shield (2-4); the magnetic pole (2-3) is installed inside the magnetic pole sleeve (2-1), the magnetic yoke (2-2) is installed on the magnetic pole (2-3), the magnetic shield (2-4) is installed outside the magnetic pole sleeve (2-1), and the magnetic shield (2-4) is provided with flow channels of different linear shapes, including an Archimedean spiral shape and a four-leaf rose linear shape; the electromagnetic magnetic pole polishing device structure comprises a magnetic pole sleeve (3-1), an electromagnetic coil (3-2), an iron core (3-3), and a magnetic shield (3-4); and the hybrid magnetic pole polishing device structure comprises a magnetic pole sleeve (4-1), an electromagnetic coil (4-2), a magnetic pole (4-3), a magnetic yoke (4-4), an iron core (4-5), and a magnetic shield (4-6).

2. The ultrasonic composite magnetic field assisted polishing device according to claim 1, characterized in that: The six-axis precision machine tool (1-1) adopts a gantry structure and includes three movable axes, X, Y, and Z, and three rotating axes, A, B, and C. The connecting and clamping device (1-6) is fixedly mounted on the A-axis indexing table of the six-axis precision machine tool (1-1); the electric spindle (1-2) is clamped on the connecting and clamping device (1-6); the ultrasonic vibration device (1-3) is mounted on the end of the electric spindle (1-2); the multi-pole coupling polishing device (1-4) is mounted on the lower end of the ultrasonic vibration device (1-3) via a connecting sleeve (5-8); and the workpiece (1-5) is clamped on the C-axis rotary table of the six-axis precision machine tool (1-1).

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