Ultrasonic cutting device

Abstract

The utility model provides an ultrasonic cutting device which comprises a connecting structure and an ultrasonic transducer. A cutting knife is detachably mounted in the connecting structure, and the ultrasonic transducer is detachably connected with the connecting structure; the center line of the cutting knife in the thickness direction and the center line of the connecting structure in the thickness direction are collinear. Blades are fully distributed on the side face of the cutting knife in the thickness direction. During working, when the ultrasonic transducer generates ultrasonic vibration, the ultrasonic vibration can be transmitted to the small cylinder and then transmitted to the cutting knife, so that the cutting knife generates high-speed vibration, the amplitude of the high-speed vibration is generally dozens of microns, high cutting pressure is replaced by the high-frequency vibration, and the cutting knife can perform rotary cutting, so that the cutting efficiency is greatly improved. Therefore, the cutting speed is high, the accuracy is high, cutting lines are fine and traceless, and notches are neat.

Description

Technical Field

[0001] This utility model relates to the field of cutting, and in particular to an ultrasonic cutting device. Background Technology

[0002] Fibers possess advantages such as lightweight, high strength, high modulus, integrated structural and functional design and manufacturing, and ease of molding into large components. They also exhibit excellent properties including high strength, high modulus, high temperature resistance, corrosion resistance, fatigue resistance, creep resistance, electrical conductivity, thermal conductivity, low specific gravity, and low coefficient of thermal expansion, leading to their widespread use in aerospace, missiles, rockets, and aircraft. Traditional fiber cutting typically employs mechanical rotary cutting. Rotary cutting involves high cutting pressure, which can cause fiber end deformation. Furthermore, the cutting equipment becomes dull due to the accumulation of cutting dust, and friction generates significant heat, placing high demands on the cooling system and limiting the feed rate.

[0003] With the development of technology, ultrasound is increasingly being used in the cutting field. However, current ultrasonic cutting tools generally have a cutting edge at one end, with the ultrasonic generator connected to the non-cutting end of the tool, allowing only reciprocating motion. While this type of ultrasonic cutting tool can ensure normal cutting, the reciprocating motion results in a relatively low cutting speed.

[0004] Therefore, there is an urgent need to develop a cutting device that can cut quickly and accurately, with fine, seamless lines and clean cuts. Utility Model Content

[0005] In view of the shortcomings of the prior art described above, the purpose of this utility model is to provide an ultrasonic cutting device to solve the technical problems existing in the prior art.

[0006] To achieve the above and other related objectives, this utility model provides an ultrasonic cutting device, including a connecting structure and an ultrasonic transducer; a cutting blade is detachably installed in the connecting structure, and the ultrasonic transducer is detachably connected to the connecting structure; the center line of the cutting blade in the thickness direction is collinear with the center line of the connecting structure in the thickness direction; the side of the cutting blade in the thickness direction is covered with cutting edges, and the cutting blade can rotate during cutting.

[0007] Furthermore, the connection structure includes an upper connecting block and a lower connecting block, the upper connecting block and the lower connecting block being detachably connected, and one of the upper connecting block and the lower connecting block being detachably connected to the ultrasonic transducer; the cutting blade is installed between the lower connecting block and the lower connecting block.

[0008] Furthermore, the upper connecting block includes an upper end face and a lower contact surface, and the lower connecting block includes an upper contact surface and a lower end face; both the upper contact surface and the lower contact surface abut against the cutting blade.

[0009] Furthermore, an upper damping groove is provided on the upper contact surface, and / or a lower damping groove is provided on the lower contact surface; the upper damping groove and the lower damping groove are staggered; the upper damping groove and the lower damping groove are filled with damping components.

[0010] Furthermore, one of the upper connecting block and the lower connecting block is a trapezoidal cylinder with a trapezoidal cross-section along the thickness direction, and the other is a convex cylinder with a convex cross-section along the thickness direction; the trapezoidal cylinder has a through hole along its center line, the small cylinder of the convex cylinder is matched with the through hole, and the small cylinder is detachably connected to the ultrasonic transducer.

[0011] Furthermore, the cutting blade is a circular ring blade, which is sleeved on the small cylinder.

[0012] Furthermore, the small cylinder is connected to the transmitting end of the ultrasonic transducer by a thread.

[0013] Furthermore, the area of ​​the upper contact surface is greater than the area of ​​the lower end surface, and the area of ​​the lower contact surface is greater than the area of ​​the upper end surface.

[0014] Furthermore, the area of ​​the upper contact surface is equal to the area of ​​the lower contact surface.

[0015] Furthermore, the center of the cutting blade is thicker than the rest.

[0016] As described above, the ultrasonic cutting device of this utility model has the following beneficial effects:

[0017] This ultrasonic cutting device includes a connecting structure and an ultrasonic transducer; a cutting blade is detachably installed in the connecting structure; during operation, when the ultrasonic transducer generates ultrasonic vibration, the ultrasonic vibration is transmitted to the small cylinder, and then to the cutting blade, causing the cutting blade to vibrate at high speed, with an amplitude generally of tens of micrometers. High-frequency vibration replaces high cutting pressure, and because the cutting blade can perform rotary cutting, the cutting speed is fast and the precision is high, as well as the cutting lines are fine and traceless, and the cut is clean. Attached Figure Description

[0018] Figure 1 The diagram shown is a schematic diagram of an ultrasonic cutting device according to this utility model;

[0019] Figure 2 The image shown is a cross-sectional view of an ultrasonic cutting device according to this utility model.

[0020] Figure 3 The image shown is a front view of the upper connecting block of this utility model. In this embodiment, the upper connecting block is a trapezoidal cylinder.

[0021] Figure 4 The image shown is a bottom view of the upper connecting block of this utility model. In this embodiment, the upper connecting block is a trapezoidal cylinder.

[0022] Figure 5 Displayed as along Figure 4 Cross-sectional view of DD in the middle;

[0023] Figure 6 Displayed as along Figure 4 Cross-sectional view of AA in the middle;

[0024] Figure 7 The image shown is a front view of the upper connecting block of this utility model. In this embodiment, the lower connecting block is a convex cylinder.

[0025] Figure 8 The image shown is a bottom view of the upper connecting block of this utility model. In this embodiment, the lower connecting block is a convex cylinder.

[0026] Figure 9 Displayed as along Figure 8 Cross-sectional view of the EE;

[0027] Figure 10 Displayed as along Figure 8 Cross-sectional view of BB in the middle.

[0028] Component designation explanation

[0029] 1. Ultrasonic transducer 2. Connection structure

[0030] 3 cutting blades 21 upper connecting block

[0031] 31 blade, 22 lower connecting block

[0032] 4 vibration damping grooves 221 small cylinders

[0033] 5 pressure holes 222 large cylinder

[0034] 6 screw Detailed Implementation

[0035] The following specific embodiments illustrate the implementation of this utility model. Those skilled in the art can easily understand other advantages and effects of this utility model from the content disclosed in this specification.

[0036] It should be understood that the structures, proportions, sizes, etc., illustrated in the accompanying drawings of this specification are merely for illustrative purposes to aid those skilled in the art and are not intended to limit the scope of implementation of this utility model. Therefore, they have no substantial technical significance. Any modifications to the structure, changes in proportions, or adjustments to size, without affecting the effectiveness and purpose of this utility model, should still fall within the scope of the technical content disclosed in this utility model. Furthermore, the terms such as "upper," "lower," "left," "right," "middle," and "one" used in this specification are merely for clarity of description and are not intended to limit the scope of implementation of this utility model. Changes or adjustments to their relative relationships, without substantially altering the technical content, should also be considered within the scope of implementation of this utility model.

[0037] like Figure 1 and Figure 2 As shown, this utility model provides an ultrasonic cutting device, including a connecting structure 2 and an ultrasonic transducer 1; a cutting blade 3 is detachably installed in the connecting structure 2, and the ultrasonic transducer 1 is detachably connected to the connecting structure 2; the centerline of the cutting blade 3 in the thickness direction is collinear with the centerline of the connecting structure 2 in the thickness direction. The side of the cutting blade 3 in the thickness direction is covered with blades 31, and during cutting, the cutting blade 3 can rotate along its centerline in the thickness direction, thereby increasing the cutting speed.

[0038] The cutting blade 3 is thicker in the center than in the rest. Preferably, the thickness of the cutting blade 3 gradually decreases from the center outwards.

[0039] refer to Figure 1 and Figure 2 The connecting structure 2 includes an upper connecting block 21 and a lower connecting block 22, the upper connecting block 21 and the lower connecting block 22 being detachably connected, and one of the upper connecting block 21 and the lower connecting block 22 being detachably connected to the ultrasonic transducer 1; the cutting blade 3 is mounted on the upper connecting block 21. During cutting, there is no relative movement between the cutting blade 3 and the upper connecting block 21, nor is there relative movement between the cutting blade 3 and the lower connecting block 22.

[0040] Furthermore, the upper connecting block 21 includes an upper end surface and a lower contact surface, and the lower connecting block 22 includes an upper contact surface and a lower end surface; both the upper contact surface and the lower contact surface abut against the cutting blade 3.

[0041] Further, refer to Figure 4 and Figure 9The upper contact surface and the lower contact surface are respectively provided with damping grooves 4, or one of them is provided with a damping groove 4. The damping groove 4 on the upper contact surface is the upper damping groove; the damping groove 4 on the lower contact surface is the lower damping groove; the upper damping groove and the lower damping groove are staggered; the damping groove is filled with a damping element. The damping element is preferably made of damping adhesive.

[0042] In this application, the cross-section of the upper damping groove and / or the lower damping groove is triangular. The cross-sectional dimensions of the upper damping groove and the lower damping groove may be the same or different.

[0043] Preferably, the upper damping groove is a first annular groove and the lower damping groove is a second annular groove; the first annular groove and the second annular groove are concentric and have different diameters, which can prevent local stress concentration of the cutting blade 3 and improve the damping effect.

[0044] Alternatively, the upper damping groove includes multiple first damping grooves, which are evenly distributed on the first circumference. The lower damping groove includes multiple second damping grooves, which are also evenly distributed on the second circumference. The first and second circumferences are concentric but have different diameters, which prevents localized stress concentration on the cutting blade 3 and improves the damping effect.

[0045] In this embodiment, reference is made to Figures 3 to 6 The upper connecting block 21 is designed as a trapezoidal cylinder, and its cross-section along the thickness direction is trapezoidal. (Reference) Figures 7 to 10 The lower connecting block 22 is designed as a convex cylinder, and the cross section along the thickness direction is convex. Specifically, the lower connecting block 22 is composed of a small cylinder 221 and a large cylinder 222. The small cylinder 221 is located on the large cylinder 222, and the center lines of the two are collinear. Ideally, the lower connecting block 22 is a one-piece molded design.

[0046] If the upper connecting block 21 is designed as a convex cylinder with a convex cross-section along the thickness direction, then the upper connecting block 21 is designed as a trapezoidal cylinder with a trapezoidal cross-section along the thickness direction. Specifically, the upper connecting block 21 consists of a small cylinder and a large cylinder, with the small cylinder located on top of the large cylinder, and their center lines collinear; ideally, the upper connecting block 21 is a one-piece molded design.

[0047] refer to Figure 1 and Figure 2 The trapezoidal cylinder has a through hole along its center line. A small cylinder 221 of the convex cylinder mates with the through hole, and the small cylinder 221 is detachably connected to the ultrasonic transducer 1. Preferably, the cutting blade 3 is a ring-shaped blade, which is fitted onto the small cylinder 221. The cutting edge 31 of the ring-shaped blade covers its circumference.

[0048] refer to Figure 1 and Figure 2 The trapezoidal cylinder's face facing the cutting blade 3 abuts against one surface of the annular blade, while the large cylinder 222's face facing the cutting blade 3 abuts against the other surface of the annular blade. That is, the cutting blade 3 is installed between the trapezoidal cylinder and the large cylinder 222. The friction between the cutting blade 3 and the trapezoidal cylinder, as well as the friction between the cutting blade 3 and the large cylinder 222, prevents relative sliding between the three.

[0049] The small cylinder 221 is connected to the transmitting end of the ultrasonic transducer 1 via a screw 6, see Figure 2 Specifically, the small cylinder 221 is provided with a first internal thread, the transmitting end of the ultrasonic transducer 1 is provided with a second internal thread, one end of the screw 6 is connected to the first internal thread, and the other end is connected to the second internal thread. Preferably, see reference. Figure 5 , Figure 8 and Figure 9 Pressure holes 5 are respectively provided on the upper end face and the lower end face; to avoid stress concentration, the pressure holes 5 on the upper end face and the pressure holes 5 on the lower end face are staggered. During installation, a hook wrench can be used to rotate the connecting structure 2 to facilitate locking the small cylinder 221, the transmitting end of the ultrasonic transducer 1, and the screw 6.

[0050] In another embodiment, the small cylinder 221 is threadedly connected to the transmitting end of the ultrasonic transducer 1; specifically, the small cylinder 221 has a first external thread, and the transmitting end of the ultrasonic transducer 1 has a third internal thread that matches the external thread; or, the small cylinder 221 has a fourth internal thread, and the transmitting end of the ultrasonic transducer 1 has a second external thread that matches the fourth internal thread. In other embodiments, the small cylinder 221 and the transmitting end of the ultrasonic transducer 1 can also be glued together.

[0051] When the ultrasonic transducer 1 generates ultrasonic vibration during operation, the ultrasonic vibration is transmitted to the small cylinder 221, and then to the cutting blade 3, causing the cutting blade 3 to vibrate at high speed. The amplitude is generally tens of micrometers. The high-frequency vibration replaces the high cutting pressure. Since the cutting blade 3 can perform rotary cutting, the cutting speed is fast and the accuracy is high, and the cutting lines are fine and traceless with a clean cut.

[0052] Furthermore, the area of ​​the upper contact surface is larger than the area of ​​the lower end surface, and the area of ​​the lower contact surface is larger than the area of ​​the upper end surface. This ensures that the contact surfaces of the upper connecting block 21 and the lower connecting block 22 with the cutting blade 3 are properly aligned, guaranteeing reliable installation of the cutting blade 3. Simultaneously, it reduces the weight of the upper connecting block 21 and the lower connecting block 22, thereby reducing the manufacturing cost of this ultrasonic cutting device.

[0053] Preferably, the area of ​​the upper contact surface is equal to the area of ​​the lower contact surface. The diameter of the contact surface is related to the natural frequency f of the connected ultrasonic drive device. When designing the area of ​​the upper contact surface and / or the area of ​​the lower contact surface, the natural frequency f of the ultrasonic transducer 1 should be taken into account.

[0054] This invention discloses an ultrasonic cutting device. During operation, when the ultrasonic transducer 1 generates ultrasonic vibrations, these vibrations are transmitted to the small cylinder 221, and then to the cutting blade 3, causing the cutting blade 3 to vibrate at high speed. The amplitude of this vibration is typically tens of micrometers. This high-frequency vibration replaces high cutting pressure, and because the cutting blade 3 can perform rotary cutting, the cutting speed is fast and precise, resulting in fine, seamless cuts with clean edges. Therefore, this invention effectively overcomes the various shortcomings of existing technologies and has high industrial application value.

[0055] The above embodiments are merely illustrative of the principles and effects of this utility model and are not intended to limit the scope of this utility model. Any person skilled in the art can modify or alter the above embodiments without departing from the spirit and scope of this utility model. Therefore, all equivalent modifications or alterations made by those skilled in the art without departing from the spirit and technical concept disclosed in this utility model should still be covered by the claims of this utility model.

Claims

1. An ultrasonic cutting device, characterized in that, It includes a connecting structure and an ultrasonic transducer; a cutting blade is detachably installed in the connecting structure, and the ultrasonic transducer is detachably connected to the connecting structure; the center line of the cutting blade in the thickness direction is collinear with the center line of the connecting structure in the thickness direction; the side of the cutting blade in the thickness direction is covered with cutting edges, and the cutting blade can rotate during cutting.

2. The ultrasonic cutting device according to claim 1, characterized in that: The connection structure includes an upper connecting block and a lower connecting block, the upper connecting block and the lower connecting block being detachably connected, and one of the upper connecting block and the lower connecting block being detachably connected to the ultrasonic transducer; the cutting blade is installed between the lower connecting block and the lower connecting block.

3. The ultrasonic cutting device according to claim 2, characterized in that: The upper connecting block includes an upper end face and a lower contact surface, and the lower connecting block includes an upper contact surface and a lower end face; both the upper contact surface and the lower contact surface abut against the cutting blade.

4. The ultrasonic cutting device according to claim 3, characterized in that: An upper damping groove is provided on the upper contact surface, and / or a lower damping groove is provided on the lower contact surface; the upper damping groove and the lower damping groove are staggered; the upper damping groove and the lower damping groove are filled with damping components.

5. An ultrasonic cutting device according to claim 3, characterized in that: One of the upper connecting block and the lower connecting block is a trapezoidal cylinder with a trapezoidal cross-section along the thickness direction, and the other is a convex cylinder with a convex cross-section along the thickness direction. The trapezoidal cylinder has a through hole along its center line, and the small cylinder of the convex cylinder is matched with the through hole, and the small cylinder is detachably connected to the ultrasonic transducer.

6. The ultrasonic cutting device according to claim 5, characterized in that: The cutting blade is a circular ring blade, which is fitted onto the small cylinder.

7. An ultrasonic cutting device according to claim 6, characterized in that: The small cylinder is connected to the transmitting end of the ultrasonic transducer by a thread.

8. An ultrasonic cutting device according to claim 6, characterized in that: The area of ​​the upper contact surface is greater than the area of ​​the lower end surface, and the area of ​​the lower contact surface is greater than the area of ​​the upper end surface.

9. An ultrasonic cutting device according to claim 8, characterized in that: The area of ​​the upper contact surface is equal to the area of ​​the lower contact surface.

10. An ultrasonic cutting device according to any one of claims 1 to 9, characterized in that: The center of the cutting blade is thicker than the rest.

Images