An ultrasonic vibration cutting tool for surface processing

Abstract

This invention provides an ultrasonic vibration cutting tool for surface processing, applicable to the field of ultrasonic vibration cutting. An ultrasonic generator and an ultrasonic transducer are electrically connected. The ultrasonic transducer converts the electrical energy of the ultrasonic generator into axial mechanical vibration of the same frequency. An amplitude modulator adjusts the vibration amplitude and transmits the vibration energy to the cutting head, causing the cutting edge to generate a cutting motion of the same frequency. The direction of the cutting edge movement is tangential to the cutting tip. The cutting head extends beyond the outer casing and can be used to cut burrs. An elastic clamping mechanism provides lateral elasticity to the outer casing, causing the cutting head to tilt and press against the workpiece surface. For uneven workpiece surfaces, the cutting head is fed away from the cutting edge, during which the cutting edge does not directly face the workpiece surface, thus avoiding cutting damage. This tool has low requirements for the surface shape of the part. The elastic clamping mechanism presses the cutting head against the workpiece surface, maintaining constant contact with the surface, exhibiting strong adaptability and the ability to remove burrs and flash according to the workpiece's shape.

Description

Technical Field

[0001] This invention relates to the field of ultrasonic vibration cutting, and more particularly to an ultrasonic vibration cutting tool for surface processing. Background Technology

[0002] After welding, machining, and other processes, metal sheets develop burrs and flash on their surface. Visible burrs and flash can be removed primarily through manual grinding or milling. Manual grinding relies heavily on experience, and its quality is greatly influenced by the operator's skill level, resulting in low efficiency and inconsistent quality.

[0003] Milling, a method of removing burrs by machine tools, requires a high degree of flatness in the contour of the part and is difficult to apply to the processing of workpieces with complex surfaces. Furthermore, metal parts, especially sheet metal, are prone to deformation due to stress after welding. Conventional milling can result in uneven removal of burrs and damage to the material itself.

[0004] For those skilled in the art, how to deburr workpieces with uneven surface shapes is a technical problem that needs to be solved. Summary of the Invention

[0005] This invention provides an ultrasonic vibration cutting tool for surface processing, which solves the problem of deburring uneven surfaces. The specific solution is as follows:

[0006] An ultrasonic vibration cutting tool for surface processing includes a housing, an ultrasonic transducer, an amplitude modulator, a cutting head, and an ultrasonic generator. The ultrasonic transducer and the amplitude modulator are mounted on the housing, and the ultrasonic generator and the ultrasonic transducer are electrically connected. The cutting head includes a wedge-shaped block, the thickness of which gradually decreases towards the distal end along the axial direction; the two side surfaces of the wedge-shaped block have unequal angles with the axis.

[0007] The distal end of the wedge is provided with a cutting tip, which is tilted upwards toward the side of the wedge with a smaller inclination angle;

[0008] The ultrasonic transducer converts the electrical energy of the ultrasonic generator into axial mechanical vibration, the amplitude modulator adjusts the vibration amplitude and transmits the vibration energy to the cutting head; the vibration direction of the cutting edge is tangential to the cutting edge.

[0009] The cutting head can be dragged along the workpiece surface in a direction away from the cutting edge to achieve cutting.

[0010] Optionally, it also includes an elastic clamping mechanism that provides lateral elastic force to the housing, causing the cutter head to tilt and press against the workpiece surface.

[0011] Optionally, the elastic clamping mechanism is positioned on the side of the wedge block with a smaller inclination angle to apply an elastic thrust.

[0012] Optionally, the elastic clamping mechanism is positioned on the side of the wedge block with a larger inclination angle to apply an elastic tension.

[0013] Optionally, the cutter head has a variable cross-section structure along the axial direction, including a cylinder fixed end-to-end and the wedge block.

[0014] Optionally, one side surface of the wedge block is parallel to the angle between it and the axis.

[0015] Optionally, the cutting tip is wedge-shaped, with its thickness gradually decreasing towards the distal end.

[0016] Optionally, the elastic clamping mechanism is a spring or a pneumatic support.

[0017] Optionally, a quick-release clamping mechanism is provided on the exterior of the housing.

[0018] This invention provides an ultrasonic vibration cutting tool for surface processing. An ultrasonic generator signal is connected to an ultrasonic transducer, which converts the electrical energy of the ultrasonic generator into axial mechanical vibration. An amplitude modulator adjusts the vibration amplitude and transmits the vibration energy to the cutting head. The cutting head includes a wedge-shaped block whose thickness gradually decreases towards the distal end along the axial direction. The two surfaces of the wedge-shaped block have unequal angles with the axis, and a cutting tip is located at the distal end of the wedge-shaped block, tilting towards the side with the smaller inclination angle. The entire cutting head has an asymmetrical shape. The amplitude modulator adjusts the vibration amplitude and transmits the vibration energy to the cutting head. The vibration direction of the cutting tip is tangential to the cutting tip. The vibration of the cutting tip cuts burrs from the workpiece surface. During use, the cutting head is tilted and pressed against the workpiece surface. For uneven workpiece surfaces, the cutting head feeds along the workpiece surface in a direction away from the cutting edge. During this process, the cutting edge does not directly face the workpiece surface, avoiding cutting damage. This tool has low requirements for the surface shape of the part, maintains constant contact with the workpiece surface, has strong adaptability, and can remove burrs and flash according to the shape. Attached Figure Description

[0019] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0020] Figure 1 This is a schematic diagram of the overall structure of the ultrasonic vibration cutting tool for surface processing according to the present invention.

[0021] Figure 2This is a schematic diagram of the first arrangement of the elastic clamping mechanism;

[0022] Figure 3 This is a schematic diagram of the second arrangement of the elastic clamping mechanism;

[0023] Figure 4 This is a schematic diagram of the third arrangement of the elastic clamping mechanism;

[0024] Figure 5 This is a schematic diagram of the isometric structure of the tool head;

[0025] Figure 6 This is a frontal view of the blade tip;

[0026] Figure 7 This is a side view of the cutter head.

[0027] The image includes:

[0028] 1. Outer shell; 2. Ultrasonic transducer; 3. Amplitude modulator; 4. Blade head; 41. Cylindrical column; 42. Wedge block; 43. Blade tip; 5. Ultrasonic generator; 6. Elastic clamping mechanism. Detailed Implementation

[0029] The core of this invention is to provide an ultrasonic vibration cutting tool for surface processing, which solves the problem of not being able to deburr non-flat surfaces.

[0030] To enable those skilled in the art to better understand the technical solution of the present invention, the ultrasonic vibration cutting tool for surface processing of the present invention will be described in detail below with reference to the accompanying drawings and specific embodiments.

[0031] Combination Figure 1 The present invention provides an ultrasonic vibration cutting tool for surface processing, including a housing 1, an ultrasonic transducer 2, an amplitude modulator 3, a cutting head 4, an ultrasonic generator 5, etc. The ultrasonic transducer 2 is installed inside the housing 1, and the ultrasonic generator 5 is connected to the ultrasonic transducer 2. The ultrasonic generator 5 and the ultrasonic transducer 2 are electrically connected. The ultrasonic generator 5 outputs electrical energy to the ultrasonic transducer 2, and the ultrasonic transducer 2 converts the electrical energy of the ultrasonic generator 5 into axial mechanical vibration.

[0032] The cutter head 4 includes a wedge-shaped block 42, the thickness of which gradually decreases towards the distal end along the axial direction; the wedge-shaped block 42 includes two surfaces forming an acute angle, the two side surfaces of the wedge-shaped block 42 making unequal angles with the axis, combined with... Figure 7 Viewed from the side, the wedge block 42 has an asymmetrical structure, with the tilt angle of the left surface being greater than that of the right surface. The side with the larger tilt angle faces the surface of the workpiece during use, which can form a better fit with the surface of the workpiece and facilitate use.

[0033] A cutting edge 43 is provided at the distal end of the wedge block 42, and the cutting edge 43 is raised towards the side of the wedge block 42 with a smaller inclination angle; combined with Figure 7 The cutting tip 43 is further inclined to the lower right based on the acute angle formed at the far end of the wedge block 42. By setting the cutting tip 43, the inclination of the far end of the wedge block 42 is further increased. During use, the left side of the cutting tip 43 can contact the surface of the workpiece, increasing the contact area and improving the efficiency of deburring.

[0034] The amplitude modulator 3 is supported by the outer shell 1. The amplitude modulator 3 has a variable cross-section structure and a flange on its outer periphery to amplify the vibration amplitude. The amplitude modulator 3 adjusts the vibration amplitude and transmits the vibration energy to the cutting head 4. The vibration direction of the cutting tip 43 is tangential to the cutting tip 43 (e.g., ...). Figure 4 The cutting tip 43 faces downwards (the direction of the surface), and the vibration of the cutting tip 43 cuts the burrs on the workpiece surface. During use, the cutting head 43 is tilted (the center line of the entire ultrasonic vibration cutting tool is not perpendicular to the workpiece surface) and pressed against the workpiece surface. For uneven workpiece surfaces, the cutting head 4 is fed along the workpiece surface in a direction away from the cutting edge. During this process, the cutting edge is not directly perpendicular to the workpiece surface, which can avoid cutting damage. This tool has low requirements for the surface shape of the part. It uses the action of the elastic clamping mechanism to press the cutting head against the surface of the workpiece, keeping it in close contact with the workpiece surface at all times. It has strong adaptability and can remove burrs and flash according to the shape.

[0035] The ultrasonic vibration cutting tool for surface processing of the present invention can remove burrs through a drag-and-drop cutting method. It has low requirements for the surface shape of the part and does not require the workpiece surface to be completely flat. It maintains constant contact with the workpiece surface while moving along it, achieving an adaptive cutting effect and removing burrs and flash according to the shape. The cutting tool of the present invention can remove burrs through a drag-and-drop motion, but this does not mean that the cutting tool can only perform drag-and-drop motion; it can also remove burrs through a push-and-drop motion, for example, the tool still maintaining its position... Figure 2 As shown, the tool moves to the left, but in a horizontal motion. This tool movement method is mainly suitable for areas where the workpiece surface is flat and without obvious undulations. Alternatively, the entire cutting tool can be moved around... Figure 2 Rotate the dashed axis by 180 degrees (towards) Figure 2 (The state shown is symmetrical), and it still moves to the right.

[0036] The ultrasonic vibration cutting tool for surface processing of the present invention further includes an elastic clamping mechanism 6. The elastic clamping mechanism 6 provides a lateral elastic force to the outer shell 1, causing the cutting head 4 to be tilted and pressed against the workpiece surface. Specifically, the elastic clamping mechanism 6 provides a lateral elastic force to the outer shell 1, and the direction of the elastic force of the elastic clamping mechanism 6 on the outer shell 1 is approximately perpendicular to the outer wall of the outer shell 1. The outer shell 1 is subjected to the elastic force generated by the elastic clamping mechanism 6, which causes the cutting head 4 to be tilted and pressed against the workpiece surface. That is, the cutting head 4 is not perpendicular to the workpiece surface, but forms a certain angle with the workpiece surface; the cutting head 4 can be dragged and fed in a direction away from the cutting edge, such as... Figure 2 , Figure 3 , Figure 4 As shown, the cutting edge of the cutter head 4 faces downward to the left, the outer shell 1 faces upward to the right, the surface of the workpiece is horizontal, and the cutter head 4 forms an acute angle with the surface of the workpiece. The pressure applied by the elastic clamping mechanism 6 to the outer shell 1 is downward to the right. The movement direction of the cutter head 4 is to the right and parallel to the surface of the workpiece. For curved surfaces, the movement direction is tangential to the surface of the workpiece. The direction of the cutting edge is opposite to the direction of the cutting, and a dragging motion is performed, which is equivalent to pulling the outer shell 1. The outer shell 1 has a dragging effect on the cutter head 4. During the movement of the cutter head 4, the cutting edge does not directly face the surface of the workpiece and does not directly cut the workpiece. When the cutter head 4 passes through the corresponding position on the surface of the workpiece, the tangential vibration generated by the cutter head 4 removes burrs and other debris from the surface of the workpiece.

[0037] The ultrasonic vibration cutting tool for surface processing of the present invention can remove burrs through a drag-and-drop cutting method, with low requirements on the surface shape of the part and does not require the workpiece surface to be completely flat. Utilizing the elastic action of the elastic clamping mechanism 6, the cutting head 4 is pressed against the surface of the workpiece, maintaining constant contact with the workpiece surface to achieve an adaptive cutting effect, and can remove burrs and flash according to the shape. Combined with… Figure 2 , Figure 3 , Figure 4 The present invention provides two specific configurations of the elastic pressing mechanism 6: the first configuration is that the elastic pressing mechanism 6 is located on the side of the wedge block 42 with a smaller inclination angle to apply an elastic thrust; the second configuration is that the elastic pressing mechanism 6 is located on the side of the wedge block 42 with a larger inclination angle to apply an elastic pull.

[0038] Figure 2 The elastic clamping mechanism 6 is located on the side of the wedge block 42 with a larger inclination angle. It applies an elastic tension to the outer shell 1, and the elastic tension causes the cutter head 4 to press against the surface of the workpiece. Figure 3 and Figure 4 The elastic clamping mechanism 6 is located on the side of the wedge block 42 with a smaller inclination angle and applies an elastic thrust, which causes the cutter head 4 to press against the surface of the workpiece.

[0039] The ultrasonic vibration cutting tool for surface processing provided by this invention can be applied to automated deburring equipment. For example, the housing 1 and the ultrasonic generator 5 are mounted on a robotic arm, which drives the entire assembly to move. During the process of the robotic arm pressing the cutting head 4 onto the workpiece surface, the elastic clamping mechanism 6 acts as a buffer to prevent the cutting head 4 from colliding with the workpiece. The elastic clamping mechanism 6 applies elastic force to the housing 1 to keep the cutting head 4 in a tight, pressed fit. When the robotic arm drives the entire assembly to move, the cutting edge of the cutting head 4 is always in close contact with the surface of the workpiece and vibrates to remove burrs.

[0040] Combination Figure 5 , Figure 6 , Figure 7 The cutting head 4 used in this invention has a variable cross-section structure. The cross-sectional shape and size of the cutting head are not exactly the same at different positions along the axial direction. The cutting head 4 includes a cylinder 41 and a wedge block 42. The cylinder 41 and the wedge block 42 are joined end to end as a whole. The thickness of the wedge block 42 gradually decreases towards the distal end, that is... Figure 7 The lateral dimensions of the middle wedge block 42 gradually decrease from top to bottom; the wedge block 42 can be constructed with a uniform width. Figure 6 The left and right lateral dimensions of the middle wedge block 42 are equal, ensuring that the lower part has a large contact size with the workpiece surface.

[0041] Specifically, in this invention, one side surface of the wedge block 42 is parallel to the angle between itself and the axis. (Combined with...) Figure 7 The inclination angles of the two surfaces of the wedge block 42 are not equal. The right surface is parallel to the axis, while the left surface has an angle with the axis.

[0042] Figure 7 The structure shown is only a preferred embodiment. A structure in which both the left and right surfaces are inclined can also be used. These specific embodiments should be included within the protection scope of this invention.

[0043] Specifically, such as Figure 7 As shown, the cutting tip 43 provided by this invention is wedge-shaped, and the thickness of the cutting tip 43 gradually decreases towards the distal end. The blade edge is formed at the point where the thickness of the cutting tip 43 is minimum. The cutting tip 43 adopts a wedge-shaped structure with a gradually decreasing thickness, so that the cutting tip maintains sufficient structural strength. In addition to adopting a wedge-shaped structure, the cutting tip 43 can also be in the form of a detachable sandwich blade. These specific embodiments should all be included within the protection scope of this invention.

[0044] Specifically, the elastic clamping mechanism 6 used in this invention is a spring or a pneumatic support. Figure 3 and Figure 4 The difference lies in the specific method used by the elastic clamping mechanism 6. Figure 3 The image shows a helical spring. Figure 4 The image shows a pneumatic support.

[0045] Preferably, the present invention provides a quick-release clamping mechanism on the outside of the outer casing 1, which facilitates disassembly and installation.

[0046] The ultrasonic transducer 2 converts the electrical energy output from the ultrasonic generator 5 transmitted from the cable end into mechanical vibration of the corresponding frequency. The amplitude modulator 3 adjusts the vibration and transmits it to the cutter head 4. The cutter head 4 resonates at the same frequency, gradually changing the axial vibration into vibration along the tangential direction of the cutting edge. Compared with the vibration input direction, while ensuring large amplitude vibration at the cutting edge, it achieves angled cutting and removes burrs while the tool is being dragged.

[0047] The above description of the disclosed embodiments enables those skilled in the art to make or use the invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the invention. Therefore, the invention is not to be limited to the embodiments shown herein, but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. An ultrasonic vibration cutting tool for surface processing, characterized in that, The device includes a housing (1), an ultrasonic transducer (2), an amplitude modulator (3), a cutting head (4), and an ultrasonic generator (5). The ultrasonic transducer (2) and the amplitude modulator (3) are mounted on the housing (1). The ultrasonic generator (5) is electrically connected to the ultrasonic transducer (2). The cutting head (4) includes a wedge (42). The thickness of the wedge (42) gradually decreases towards the distal end along the axial direction. The two sides of the wedge (42) have unequal angles with the axis. The wedge (42) is provided with a cutting tip (43) at its far end. The cutting tip (43) is raised towards the side of the wedge (42) with a smaller inclination angle. The surface of the side with a larger inclination angle faces the surface of the workpiece during use, and the cutting tip (43) forms a better fit with the surface of the workpiece. The ultrasonic transducer (2) converts the electrical energy of the ultrasonic generator (5) into axial mechanical vibration, and the amplitude modulator (3) adjusts the vibration amplitude and transmits the vibration energy to the cutter head (4); the vibration direction of the cutting edge (43) is the tangential direction of the cutting edge. The cutting head (4) can be dragged along the workpiece surface in a direction away from the cutting edge to achieve cutting.

2. The ultrasonic vibration cutting tool for surface processing according to claim 1, characterized in that, It also includes an elastic clamping mechanism (6), which provides lateral elastic force to the housing (1) so that the cutter head (4) is tilted and pressed against the workpiece surface.

3. The ultrasonic vibration cutting tool for surface processing according to claim 2, characterized in that, The elastic clamping mechanism (6) is positioned on the side of the wedge block (42) with a smaller inclination angle to apply an elastic thrust.

4. The ultrasonic vibration cutting tool for surface processing according to claim 2, characterized in that, The elastic clamping mechanism (6) is positioned on the side of the wedge block (42) with a larger inclination angle to apply elastic tension.

5. The ultrasonic vibration cutting tool for surface processing according to claim 1, characterized in that, The cutter head (4) has a variable cross-section structure along the axial direction, including a cylinder (41) fixed end to end and a wedge block (42).

6. The ultrasonic vibration cutting tool for surface processing according to claim 1, characterized in that, One side surface of the wedge (42) is parallel to the angle between it and the axis.

7. The ultrasonic vibration cutting tool for surface processing according to claim 1, characterized in that, The cutting tip (43) is wedge-shaped, and its thickness gradually decreases towards the distal end.

8. The ultrasonic vibration cutting tool for surface processing according to claim 2, characterized in that, The elastic clamping mechanism (6) is a spring or pneumatic support.

9. The ultrasonic vibration cutting tool for surface processing according to claim 1, characterized in that, The outer casing (1) is provided with a quick-release clamping mechanism.

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