Ultrasonic grooving cutter for miniature carving of calabash

Abstract

The utility model belongs to the field of carving tools and instruments, and particularly relates to a gourd micro-carving ultrasonic grooving cutter which comprises a cutter handle and a cutter head connected to one end of the cutter handle through a jackscrew, and is characterized in that the cutter head is made of a steel wire with the diameter of 2.5-3.5 mm, an included angle of 15-20 degrees is formed between the center lines of the two ends of the cutter head, and a shovel-shaped blade part is arranged at the front end of the cutter head. The included angle between the front angle face and the rear angle face of the blade part is 35-45 degrees, and the width of the blade part is 0.3-0.6 mm. Compared with the prior art, the tool bit has the advantages that the bent tool bit and the inclined blade portion are combined, the blade portion is sharper, grinding is convenient, and the tool bit can be applied to calabash or other carving materials with large-curvature surfaces; the graver can be manufactured into a manual graver and can also be combined with an ultrasonic generating device to be upgraded into a graver with auxiliary power, so that the graving efficiency is improved, and the working intensity is reduced; and the tool bit can be replaced.

Description

Technical Field

[0001] The utility model belongs to the field of carving tools, and particularly relates to an ultrasonic grooving knife for micro-carving gourds. Background Technique

[0002] Art crafts specifically refer to products in the industrial era that are mass-produced by machines and have certain artistic attributes, meeting the daily needs of the people and having decorative and functional uses. Pure handicraft products (handmade) also belong to the category of artworks. Micro-carving is one of the most delicate and tiny art crafts in traditional Chinese arts and crafts. Micro-carving generally refers to fine round carving, relief carving, and openwork carving (hollow carving), etc. Micro-carving protrudes and has a rich three-dimensional sense.

[0003] A carving knife refers to various pointed steel carving tools, with a wooden handle at the rear. Usually round for comfortable holding in the palm. Some carving knives have an oval cross-section, some have a diamond cross-section, and the tip is always an inclined point. The tip of a knife with a rectangular cross-section is an inclined surface, which can be blunt, round, or pointed. The tip and width of the blade edge should be determined by the depth and width of the line to be carved. The knife for micro-carving should be both sharp and fine, and the knife for micro-carving is the same as a pen.

[0004] The Chinese utility model patent with the application number 202023007475.3 discloses an etching device for the surface of an oxidized copper handicraft, including a carving pen body and a carving needle head. A power cylinder is horizontally arranged inside the carving pen body. A limit seat is arranged at one end of the carving pen body. A limit magnetic groove is arranged at the center position of the side of the limit seat away from the carving pen body. A limit magnetic pad is fixedly arranged at one end of the carving needle head. The carving needle head is magnetically fixed to the limit seat. The moving shaft of the power cylinder penetrates through one end of the carving pen, and a thread is arranged on the surface of the moving shaft of the power cylinder. The end of the limit seat away from the carving needle head is threadedly connected to the end of the moving shaft of the power cylinder. By combining the carving pen body with the power cylinder and repeatedly starting the power cylinder, the carving needle head strikes and carves the surface of the oxidized copper, which can relieve the fatigue of the carver and improve the carving efficiency.

[0005] When carving gourd-shaped art crafts, limited by the surface angle of the gourd and the size of the work, conventional straight needle-shaped carving knives often cannot complete the carving well, affecting the artistic expression. In addition, there is also the problem that the carver is prone to fatigue. Content of the Utility Model

[0006] The purpose of the utility model is to provide an ultrasonic grooving knife for micro-carving gourds, overcoming the deficiencies of the prior art. By combining a curved knife head with a shovel-shaped blade part, it can be used as a manual carving knife and can also be upgraded to a carving knife with auxiliary power in cooperation with an ultrasonic generating device, improving the carving efficiency and reducing the working intensity.

[0007] To achieve the above purpose, the utility model is realized through the following technical solutions:

[0008] A micro-carving ultrasonic grooving knife for gourds, comprising a knife handle and a tool bit. The tool bit is connected to one end of the knife handle through a setscrew. The tool bit is made of a steel wire with a diameter of 2.5 - 3.5 mm, and there is an included angle of 15 - 20° between the center lines of its two end heads. A spade-shaped cutting edge is provided at the front end of the tool bit, and the included angle between the front clearance face and the back clearance face of the cutting edge is 35 - 45°, and the width of the cutting edge is 0.3 - 0.6 mm.

[0009] Further, the front section of the tool bit has a triangular cross-section that is wider at the top and narrower at the bottom, with an included angle of 25 - 30°.

[0010] Further, the knife handle has a hollow structure, and an ultrasonic oscillator, a force-increasing connecting rod, a buffer pad and a buffer ring are provided inside. The front end of the force-increasing connecting rod is connected to the tool bit, and the rear end is integrally connected to the ultrasonic oscillator and the buffer pad through bolts. A buffer ring is provided between the force-increasing connecting rod and the knife handle.

[0011] Further, the force-increasing connecting rod is a polyether ether ketone component with a large-end and small-end structure, and the diameter ratio of the two ends is 1.5:1.

[0012] Further, a control box is connected to the tail of the knife handle. A circuit board and a lithium battery are provided inside the control box. In the circuit board, the control unit is respectively connected to an ultrasonic generating and driving unit, a BMS control unit, a micro switch and an LED display lamp. The BMS control unit is respectively connected to the lithium battery, a boost circuit and the ultrasonic generating and driving unit. The ultrasonic generating and driving unit is respectively connected to the ultrasonic oscillator and the boost circuit; the BMS control unit is also connected to a charging socket. The micro switch, the charging socket and the LED display lamp are all located on the control box.

[0013] Further, the chip model of the control unit is PIC16F1503 - 1 / SL; the chip model of the BMS control unit is BQ25672; the ultrasonic generating and driving unit includes a NE555a oscillation circuit and a gate driver UCC27710; the main chip model of the boost circuit is UC3845.

[0014] Further, the center of gravity of the control box is on the same side as the spade-shaped cutting edge. When engraving with the handle in hand, the control box rests on the back of the operator's hand.

[0015] Compared with the prior art, the beneficial effects of the present utility model are:

[0016] 1) By combining a curved tool bit with a spade-shaped cutting edge, the cutting edge is sharper and convenient for grinding, and it can be applied to various engraving materials such as gourds or other materials with a large curvature surface, with a wide range of applications;

[0017] 2) It can be made into a manual engraving knife, or combined with an ultrasonic generating device to be upgraded to a powered engraving knife, improving the engraving efficiency and reducing the working intensity;

[0018] 3) The cutter head is replaceable, facilitating the matching of the size and material of the cutter head according to the size and material of different carved pieces. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 is a schematic three-dimensional structure diagram of an embodiment of the present utility model;

[0020] Figure 2 is a schematic internal structure diagram of an embodiment of the present utility model;

[0021] Figure 3 is Figure 2 the rear view of

[0022] Figure 4 is a schematic cutter head structure diagram in an embodiment of the present utility model;

[0023] Figure 5 is Figure 4 the sectional view taken along line A-A in

[0024] Figure 6 is a schematic circuit principle diagram in an embodiment of the present utility model;

[0025] In the figures: 1 - tool handle, 2 - cutter head, 3 - setscrew, 4 - cutting edge, 5 - ultrasonic vibrator, 6 - force-increasing connecting rod, 7 - buffer pad, 8 - buffer ring, 9 - bolt, 10 - control box, 11 - circuit board, 12 - lithium battery, 13 - charging socket, 14 - microswitch, 15 - LED display lamp, 16 - carved material. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0026] The technical solutions of the present utility model will be clearly and completely described below in conjunction with specific embodiments. Obviously, the described embodiments are some, but not all, of the embodiments of the present utility model.

[0027] In order to more clearly illustrate the specific embodiments of the present utility model or the technical solutions in the prior art, the following will briefly introduce the specific embodiments required for use in the description of the specific embodiments or the prior art. Obviously, the specific embodiments described below are some embodiments of the present utility model. For those of ordinary skill in the art, without creative efforts, other specific embodiments can be obtained based on these specific embodiments.

[0028] Generally, the components of the embodiments of the present utility model described and shown here in the specific embodiments can be arranged and designed in countless different configurations. Therefore, the following detailed description of the embodiments of the present utility model provided in the specific embodiments is not intended to limit the scope of the claimed present utility model, but only represents the selected embodiments of the present utility model.

[0029] See Figure 1-5 , which is a schematic structural diagram of an embodiment of an ultrasonic grooving tool for gourd micro-carving of the present utility model, including a tool handle 1 and a tool tip 2. The tool tip 2 is connected to one end of the tool handle 1 through a setscrew 3. The tool tip 2 is made of a steel wire with a diameter of 3.0 - 3.5 mm, and there is an included angle α of 15 - 20° between the center lines of its two end heads. A spade-shaped cutting edge 4 is provided at the front end of the tool tip 2. The included angle β between the rake face and the flank face of the cutting edge 4 is 35 - 45°, and the width h of the cutting edge 4 is 0.3 - 0.6 mm, preferably 0.5 mm. The front section of the tool tip 2 has a triangular cross-section that is wider at the top and narrower at the bottom, and the included angle γ is 25 - 30°. The purpose is to enhance the strength of the tool tip and avoid breakage when carving with force.

[0030] The tool handle 1 is a hollow structure, and an ultrasonic oscillator 5, a force-increasing connecting rod 6, a buffer pad 7 and a buffer ring 8 are provided inside. The front end of the force-increasing connecting rod 6 is connected to the tool tip 2, and the rear end is integrally connected to the ultrasonic oscillator 5 and the buffer pad 7 through a bolt 9. A buffer ring 8 is provided between the force-increasing connecting rod 6 and the tool handle 1. The ultrasonic oscillator 5 transmits ultrasonic power along the tool handle 1 to the cutting edge 4, reducing the working intensity of carving.

[0031] The outer surface of the tool handle 1 is provided with a rubber surface layer or a patterned surface layer to increase friction for convenient operation.

[0032] The force-increasing connecting rod 6 is a polyether ether ketone component with a large and small head structure, and the diameter ratio of the two ends is 1.5:1. Since the acting force area is reduced, the same pressure can achieve a magnifying effect. A control box 10 is connected to the tail of the tool handle 1, and a circuit board 11 and a lithium battery 12 are provided inside the control box 10.

[0033] See Figure 6 , in the circuit board 11, the control unit is respectively connected to the ultrasonic generating and driving unit, the BMS control unit, the micro switch and the LED display lamp. The BMS control unit is respectively connected to the lithium battery, the boost circuit and the ultrasonic generating and driving unit. The ultrasonic generating and driving unit is respectively connected to the ultrasonic oscillator and the boost circuit; the BMS control unit is also connected to the charging socket 13, and the micro switch 14, the charging socket 13 and the LED display lamp 15 are all located on the control box 10. At this time, the carving tool is upgraded from a manual one to a power carving tool, which can significantly improve the carving efficiency and be more labor-saving.

[0034] In the embodiment, the chip model of the control unit is PIC16F1503-1 / SL, which is an MCU microcontroller and the core control device; the model of the BMS control unit is BQ25672, which is a fully integrated switch-mode buck charger and can manage the charging and discharging of lithium batteries; the ultrasonic generation and drive unit includes an NE555a oscillation circuit and a gate driver UCC27710. The NE555a oscillation circuit is a pulse generator module. UCC27710 samples TI's most advanced high-voltage technology, has strong driving ability and excellent noise and transient suppression functions, generates ultrasonic waves to drive the ultrasonic vibrator to vibrate at high frequency; the main chip of the boost circuit is UC3845, and UC3845 boosts the 10.8-volt voltage of the lithium battery to 100 volts and supplies it to the ultrasonic generation and drive unit.

[0035] The center of gravity of the control box 10 is on the same side as the spade-shaped blade part 4. When holding the knife handle 1 by hand, the control box 10 rests on the back of the operator's hand, forming a counterweight to the force direction of the tool bit 2. When the carver exerts force on the blade part 4 to engrave the wire groove on the surface of the carving material 16, the weight of the control box 10 itself uses the back of the hand as a fulcrum to form a moment in the direction of the blade part 4, so as to achieve the effect of assisting and saving effort.

[0036] In order to achieve the use effect of the engraving knife, the material of the tool bit 2 is any one of 201, 202, 302, 304, 316, 302HQ, 304HC, 316L, and is selected according to the carving material.

[0037] Although the embodiments of the present invention have been shown and described, for those of ordinary skill in the art, it can be understood that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principle and spirit of the present invention. The scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A micro-carving ultrasonic grooving tool for gourds, comprising a tool handle and a tool tip. The tool tip is connected to one end of the tool handle by a setscrew, and is characterized in that, The cutter head is made of a steel wire with a diameter of 2.5 - 3.5 mm. There is an included angle of 15 - 20° between the center lines of its two end heads. A spade-shaped cutting edge is provided at the front end of the cutter head. The included angle between the front rake face and the back rake face of the cutting edge is 35 - 45°, and the width of the cutting edge is 0.3 - 0.6 mm.

2. The ultrasonic grooving tool for gourd micro carving according to claim 1, characterized in that, The front section of the cutter head has a triangular cross-section that is wider at the top and narrower at the bottom, with an included angle of 25 - 30°.

3. The ultrasonic grooving tool for gourd micro-carving according to claim 2, characterized in that, The handle is of a hollow structure, and an ultrasonic oscillator, a force-increasing connecting rod, a buffer pad, and a buffer ring are provided inside. The front end of the force-increasing connecting rod is connected to the cutter head, and the rear end is integrally connected to the ultrasonic oscillator and the buffer pad through bolts. A buffer ring is provided between the force-increasing connecting rod and the handle.

4. The ultrasonic grooving tool for bottle gourd micro-carving according to claim 3, characterized in that, The force-increasing connecting rod is a polyether ether ketone component with a large-end and small-end structure, and the diameter ratio of the two ends is 1.5:

1.

5. The ultrasonic grooving tool for bottle gourd micro-carving according to claim 3, characterized in that, A control box is connected to the tail of the handle. A circuit board and a lithium battery are provided inside the control box. In the circuit board, the control unit is respectively connected to the ultrasonic generating and driving unit, the BMS control unit, a micro switch, and an LED display lamp. The BMS control unit is respectively connected to the lithium battery, a boost circuit, and the ultrasonic generating and driving unit. The ultrasonic generating and driving unit is respectively connected to the ultrasonic oscillator and the boost circuit; the BMS control unit is also connected to a charging socket. The micro switch, the charging socket, and the LED display lamp are all located on the control box.

6. The ultrasonic grooving tool for bottle gourd micro-carving according to claim 5, wherein The chip model of the control unit is PIC16F1503 - 1 / SL; the chip model of the BMS control unit is BQ25672; the ultrasonic generating and driving unit includes a NE555a oscillation circuit and a gate driver UCC27710; the main chip model of the boost circuit is UC3845.

7. The ultrasonic grooving tool for bottle gourd micro-carving according to claim 5, wherein The center of gravity of the control box is on the same side as the spade-shaped cutting edge. When engraving with the handle in hand, the control box rests on the back of the operator's hand.

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