Five-axis CNC scraping equipment and scraping processing method for jewelry industry

Abstract

The invention discloses a five-axis CNC scraping device and scraping processing method for the jewelry industry. The ultrasonic scraping device includes a CNC five-axis machining center device, and the CNC five-axis machining center device includes a permanent magnet synchronous electric spindle, an ultrasonic actuator is fixedly installed on the permanent magnet synchronous electric spindle, and a scraping tool is installed on the ultrasonic actuator. The scraping tool, driven by the permanent magnet synchronous electric spindle and the ultrasonic actuator, acts on the surface of the workpiece to be processed with a certain pressure, so that the scraping tool produces a corresponding pattern on the surface of the workpiece to be processed. At the same time, under the action of the ultrasonic wave emitted by the ultrasonic actuator, the scraping tool generates a high-frequency micron-level amplitude, and the scraping tool generates a continuous impact force on the surface of the workpiece to be processed, so that the pattern on the surface of the workpiece to be processed has a colorful silk effect. The automated operation of the scraping process ensures the consistency of product quality, reduces labor production costs, and improves production efficiency.

Description

Technical Field

[0001] The present invention relates to the technical field of mechanical equipment, and in particular to a five-axis CNC scraping equipment and a scraping processing method for the jewelry industry. Background Art

[0002] CNC machine tools are short for Computer numerical control machine tools (CNC), which are automated machine tools equipped with a program control system. The control system sends out various control signals to control the movement of the machine tool, and automatically processes parts according to the shape and size required by the drawing. CNC machine tools have better solved the problem 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] As people's living standards continue to improve, their requirements for the aesthetics of handicrafts and accessories are also increasing. Products often need to be scraped and engraved with certain patterns on their surfaces to increase their aesthetics. For example, people will process complex patterns with rich meanings on the outer surfaces of handicrafts and accessories. While new product ideas bring new markets, they also bring great challenges to the scraping and engraving of the surfaces of handicrafts and accessories.

[0004] Shoveling is an important processing procedure in the processing of handicrafts and accessories. At present, the scraping process in the jewelry industry is all manual operation, which requires experienced craftsmen to manually scrape the flowers, or assist with some semi-automatic tools to scrape the flowers. Not only is the requirement for operators high and the production efficiency low, but it is also impossible to achieve standardized and batch production.

[0005] When the pattern on the outer surface of the product is complex, the design of the scraping pattern requires designers to spend more time, and different people have different requirements for product size. When the size of the product changes, such as the diameter and length of the product, the manual scraping master has to manually draw the pattern on the workpiece and then manually scrape the pattern. As a result, when producing crafts and accessories of various sizes, only skilled craftsmen can do manual processing, which has the problems of low efficiency, high cost and low output. Summary of the invention

[0006] In view of this, it is necessary to provide a five-axis CNC scraping device and scraping processing method for the jewelry industry that can automatically scrape and carve through programming and does not need to redraw the scraping pattern when the product size changes.

[0007] A five-axis CNC scraping device for the jewelry industry is used to generate a predetermined pattern on the surface of a workpiece to be processed. It is characterized in that it includes a CNC five-axis machining center device, and the CNC five-axis machining center device is provided with an ultrasonic mechanism, a spindle and a workpiece rotating axis. The ultrasonic mechanism and the scraping tool are installed on the spindle, and the workpiece rotating axis is used to install the workpiece to be processed. The scraping tool is tangent to the depth direction of the lines of the predetermined pattern to be processed, and the spindle drives the ultrasonic mechanism and the scraping tool to move. Under the action of the ultrasonic mechanism, the scraping tool generates a color silk-screen scraping pattern on the surface of the workpiece to be processed.

[0008] Preferably, the ultrasonic mechanism includes an ultrasonic generator connector and an ultrasonic actuator, the spindle adopts a permanent magnet synchronous electric spindle, the ultrasonic actuator is fixedly mounted on the top of the permanent magnet synchronous electric spindle, the ultrasonic generator connector has two protruding mounting connectors, the ultrasonic generator connector is arranged on the front end side of the permanent magnet synchronous electric spindle, the two mounting connectors are respectively fixedly mounted on the permanent magnet synchronous electric spindle and the ultrasonic actuator, the top of the ultrasonic actuator has a tool handle mounting position, and the scraping tool is installed at the tool handle mounting position.

[0009] Preferably, the scraping tool has a clamping end and a cutting end opposite to the clamping end, the cutting end has multiple inclined surfaces with different inclination angles, and the converging tips of the multiple inclined surfaces are provided with a scraping tool head, the scraping tool head is a raised sheet-like blade, the top edge of the scraping tool head has an arc, and the top edge of the scraping tool head is the blade acting on the workpiece to be processed.

[0010] Preferably, it also includes a workbench and an equipment support arranged on the workbench, the equipment support includes a crossbeam and columns at both ends of the crossbeam, the CNC five-axis machining center device includes X-axis modules, Y-axis modules and Z-axis modules that are arranged perpendicular to each other in pairs, the X-axis module is horizontally arranged on the crossbeam of the equipment support, the Z-axis module is vertically arranged on the X-axis module, and the Y-axis module is horizontally arranged on the workbench below the equipment support and is arranged perpendicular to the X-axis module.

[0011] Preferably, the X-axis module includes an X-axis servo motor, an X-axis ball screw, an X-axis movable part and an X-axis linear guide group arranged on both sides of the X-axis ball screw, the X-axis ball screw is horizontally installed on the crossbeam, the X-axis movable part is arranged on the X-axis linear guide group, the Z-axis module is arranged on the X-axis movable part, the X-axis servo motor drives the X-axis movable part and the Z-axis module to move left and right on the X-axis linear guide group along the direction of the X-axis ball screw; the Z-axis module includes a Z-axis servo motor, a Z-axis ball screw, a spindle connecting plate and a Z-axis linear guide group arranged on both sides of the Z-axis ball screw, the spindle connecting plate is arranged on the Z-axis linear guide group, the Z-axis servo motor drives the spindle connecting plate to move up and down above the Z-axis linear guide group along the direction of the Z-axis ball screw, and the permanent magnet synchronous electric spindle is fixedly installed on the spindle connecting plate.

[0012] Preferably, it also includes a tool magazine assembly, which is fixedly installed on the column of the equipment bracket through a tool magazine fixing plate. The tool magazine assembly includes a tool magazine servo motor, a tool magazine reducer, a tool magazine base plate and a rotating tool disc. The rotating tool disc and the tool magazine servo motor and the tool magazine reducer are respectively installed on both sides of the tool magazine base plate. The rotating tool disc rotates under the drive of the tool magazine servo motor and the tool reducer. The rotating tool disc is equipped with a plurality of claws, and the plurality of claws are arranged on the same circumference with the center of the rotating tool disc as the center, and the scraping tool is installed on the claw.

[0013] Preferably, the Y-axis module includes a Y-axis servo motor, a Y-axis ball screw, a Y-axis movable part, a Y-axis equipment mounting frame and a Y-axis linear guide group arranged on both sides of the Y-axis ball screw. The Y-axis ball screw is horizontally installed on the workbench and is vertically arranged with the X-axis module. The Y-axis movable part is installed above the Y-axis linear guide group and moves back and forth along the Y-axis ball screw and the Y-axis linear guide group under the push of the Y-axis servo motor. The Y-axis equipment mounting frame is fixedly installed on the Y-axis movable part.

[0014] Preferably, the CNC five-axis machining center device also includes a B-axis module and a C-axis module, the B-axis module is arranged on the Y-axis equipment mounting frame, and the C-axis module is rigidly connected to the top of the B-axis module; the B-axis module includes a B-axis rotating motor, a B-axis reducer and a B-axis connecting plate, the B-axis connecting part is installed on the B-axis reducer, the B-axis rotating motor drives the B-axis reducer to rotate, and drives the B-axis connecting part to rotate with the Y-axis direction as the rotation axis.

[0015] Preferably, the C-axis module includes a C-axis rotating motor, a C-axis reducer and a workpiece rotating shaft. The workpiece rotating shaft is installed on the C-axis reducer. A workpiece to be processed is arranged on the workpiece rotating shaft. The C-axis rotating motor drives the C-axis reducer to rotate and drives the workpiece rotating shaft to rotate. The rotation axis of the workpiece rotating shaft is perpendicular to the rotation axis of the B-axis connecting member.

[0016] And, a scraping processing method based on a five-axis CNC scraping device is used for the scraping processing technology of the five-axis CNC scraping device for the jewelry industry as described above, including the following specific steps:

[0017] Establishing a plurality of layers, and drawing a plane line in each of the layers, wherein the plane line is a 2D line with depth;

[0018] Create 2D plane lines and 3D curved lines;

[0019] Select the corresponding scraping tool and set the processing parameters of the scraping tool, open the layer corresponding to the scraping tool, and generate the tool path;

[0020] Display the tool path on a 3D surface model of the product and generate a corresponding G-code program;

[0021] The ultrasonic actuator in the CNC equipment drives the scraping tool to scrape and carve the jewelry product according to the G code program.

[0022] Preferably, the specific steps of the scraping tool in the CNC equipment scraping and engraving the jewelry product according to the G code program include:

[0023] Install the scraping tool onto the ultrasonic actuator;

[0024] The workpiece to be processed is fixedly placed on the workpiece rotating axis;

[0025] Set machining parameters in CNC equipment;

[0026] Transmit tool path data to CNC equipment.

[0027] In the above-mentioned five-axis CNC scraping equipment and scraping processing method for the jewelry industry, the permanent magnet synchronous electric spindle is fixedly installed with the scraping tool through the ultrasonic actuator, and the CNC five-axis machining center device drives the workpiece to be processed to move. The scraping tool, driven by the permanent magnet synchronous electric spindle and the ultrasonic actuator, acts on the surface of the workpiece to be processed with a certain pressure, so that the scraping tool produces a corresponding pattern on the surface of the workpiece to be processed. At the same time, under the action of the ultrasonic wave emitted by the ultrasonic actuator, the scraping tool produces a high-frequency micron-level amplitude, and the scraping tool produces a continuous impact force on the surface of the workpiece to be processed, so that the pattern on the surface of the workpiece to be processed has a colorful silk effect. The automated operation of the scraping process ensures the consistency of product quality, reduces labor production costs, and improves production efficiency. In the scraping processing method, the scraping pattern is decomposed into a plurality of 2D plane lines and 3D curved surface lines, and each 2D plane line and 3D curved surface line is located in a layer, and corresponds to the tool through the layer. After the processing parameters of the tool are set, the plurality of layers form a tool path, and the computer transmits the tool path to the CNC device. After the tool and the processed product in the CNC device are installed, the CNC device is turned on, and each tool in the CNC device performs scraping carving on the surface of the workpiece to be processed according to the tool path in turn. When the size of the processed product changes, only the processing parameters of the tool need to be modified to complete the modification of the scraping pattern, and there is no need to redraw the scraping pattern, thereby improving the working efficiency of the scraping carving of the CNC device and reducing the cost. The structure of the invention is simple, easy to implement, low cost, and easy to promote. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] Figure 1 The invention is a schematic diagram of the structure of a five-axis CNC scraping device used in the jewelry industry.

[0029] Figure 2 It is an enlarged structural diagram of the main shaft part of the five-axis CNC scraping equipment used in the jewelry industry according to an embodiment of the present invention.

[0030] Figure 3 It is a structural schematic diagram of an X-axis module and a Z-axis module of a five-axis CNC scraping device used in the jewelry industry according to an embodiment of the present invention.

[0031] Figure 4 It is a structural schematic diagram of a workbench, a Y-axis module, a B-axis module and a C-axis module of a five-axis CNC scraping device for the jewelry industry according to an embodiment of the present invention.

[0032] Figure 5 It is a schematic diagram of the structure of a Y-axis module, a B-axis module and a C-axis module of a five-axis CNC scraping device for the jewelry industry according to an embodiment of the present invention.

[0033] Figure 6The present invention is a schematic diagram of the structure of a tool magazine assembly of a five-axis CNC scraping device for the jewelry industry.

[0034] Figure 7 The present invention is a schematic diagram of the structure of a scraping tool of a five-axis CNC scraping device used in the jewelry industry.

[0035] Figure 8 It is a flow chart of a scraping processing method based on a five-axis CNC scraping device according to an embodiment of the present invention.

[0036] Fig. 9 It is a detailed description diagram of step S50 of the scraping processing method based on the five-axis CNC scraping equipment according to an embodiment of the present invention. DETAILED DESCRIPTION

[0037] This embodiment takes a five-axis CNC scraping device used in the jewelry industry as an example, and the present invention will be described in detail below in conjunction with specific embodiments and drawings.

[0038] See also Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 5 , Figure 6 and Figure 7 , showing a five-axis CNC scraping device 100 for the jewelry industry provided by an embodiment of the present invention, which is used to generate a predetermined pattern on the surface of a workpiece 200 to be processed, including a CNC five-axis machining center device, the CNC five-axis machining center device is provided with an ultrasonic mechanism, a spindle 50 and a workpiece rotating shaft 73, the spindle 50 is equipped with the ultrasonic mechanism and the scraping tool 53, the workpiece rotating shaft 73 is used to install the workpiece 200 to be processed, the scraping tool 53 is tangent to the depth direction of the lines of the predetermined pattern to be processed, the spindle 50 drives the ultrasonic mechanism and the scraping tool 53 to move, and the scraping tool 53 generates a color silk-screen scraping pattern on the surface of the workpiece 200 to be processed under the action of the ultrasonic mechanism.

[0039] Preferably, the ultrasonic mechanism includes an ultrasonic generator connector 51 and an ultrasonic actuator 52, the spindle 50 adopts a permanent magnet synchronous electric spindle 50, the ultrasonic actuator 52 is fixedly mounted on the top of the permanent magnet synchronous electric spindle 50, the ultrasonic generator connector 51 has two protruding mounting connectors, the ultrasonic generator connector 51 is arranged on the front end side of the permanent magnet synchronous electric spindle 50, the two mounting connectors are respectively fixedly mounted on the permanent magnet synchronous electric spindle 50 and the ultrasonic actuator 52, the top of the ultrasonic actuator 52 has a tool handle mounting position, and the scraping tool 53 is installed at the tool handle mounting position.

[0040] Specifically, the two ends of the ultrasonic generator connector 51 are respectively connected to the permanent magnet synchronous electric spindle 50 and the ultrasonic actuator 52. The ultrasonic generator converts the AC power into a high-frequency AC signal, drives the ultrasonic actuator 52 to generate mechanical power of the required frequency and transmits it to the scraping tool 53, so that the scraping tool 53 generates a corresponding pattern on the surface of the workpiece 200 to be processed under the action of the high-frequency amplitude.

[0041] Specifically, the direction of the tip of the scraping tool 53 is tangent to the depth direction of the pattern lines on the surface of the workpiece 200 to be processed.

[0042] Preferably, the scraping tool 53 has a clamping end 531 and a cutting end 532 opposite to the clamping end 531, the cutting end 532 has a plurality of inclined surfaces 5321 with different inclination angles, and a scraping tool head 5322 is provided at the converging tips of the plurality of inclined surfaces 5321, the scraping tool head 5322 is a raised sheet-like blade, and the top edge of the scraping tool head 5322 has a curvature, and the top edge of the scraping tool head 5322 is a blade acting on the workpiece 200 to be processed.

[0043] Specifically, in this embodiment, the scraping tool 53 has three inclined surfaces 5321 with different slopes, the scraping tool head 5322 has a predetermined thickness, and the scraping tool head 5322 has an inclination angle in the thickness direction, so that the scraping tool head 5322 has a sharp blade.

[0044] Specifically, the scraping tool heads 5322 of different scraping tools 53 have different widths, which can correspond to pattern lines of different widths.

[0045] Specifically, the inclination angle of the inclined surface 5321 is used to prevent the scraping tool 53 from colliding with the workpiece 200 to be processed during operation, so as to avoid causing damage to the workpiece 200 to be processed.

[0046] Preferably, it also includes a workbench 10 and an equipment support 11 arranged on the workbench 10, the equipment support 11 includes a crossbeam and columns at both ends of the crossbeam, and the CNC five-axis machining center device includes X-axis modules 20, Y-axis modules 40 and Z-axis modules 30 arranged perpendicular to each other in pairs, the X-axis module 20 is horizontally arranged on the crossbeam of the equipment support 11, the Z-axis module 30 is vertically arranged on the X-axis module 20, and the Y-axis module 40 is horizontally arranged on the workbench 10 below the equipment support 11, and is arranged perpendicular to the X-axis module 20.

[0047] Specifically, the equipment support 11 adopts a gantry frame, and the crossbeam is placed horizontally and supported on the top of the column.

[0048] Preferably, the X-axis module 20 includes an X-axis servo motor 21, an X-axis ball screw 22, an X-axis movable part 23 and an X-axis linear guide rail group arranged on both sides of the X-axis ball screw 22, the X-axis ball screw 22 is horizontally mounted on the crossbeam, the X-axis movable part 23 is arranged on the X-axis linear guide rail group, the Z-axis module 30 is arranged on the X-axis movable part 23, and the X-axis servo motor 21 drives the X-axis movable part 23 and the Z-axis module 30 to move along the X-axis ball screw 22. The Z-axis linear guide assembly moves left and right on the X-axis linear guide assembly; the Z-axis module 30 includes a Z-axis servo motor 31, a Z-axis ball screw, a spindle connecting plate 33 and a Z-axis linear guide assembly arranged on both sides of the Z-axis ball screw, the spindle connecting plate 33 is arranged on the Z-axis linear guide assembly, the Z-axis servo motor 31 drives the spindle connecting plate 33 to move up and down above the Z-axis linear guide assembly along the direction of the Z-axis ball screw, and the permanent magnet synchronous electric spindle 50 is fixedly mounted on the spindle connecting plate 33.

[0049] Preferably, it also includes a tool magazine assembly 80, which is fixedly installed on the column of the equipment bracket 11 through a tool magazine fixing plate. The tool magazine assembly 80 includes a tool magazine servo motor, a tool magazine reducer, a tool magazine base plate and a rotating tool disc 81. The rotating tool disc 81 and the tool magazine servo motor and the tool magazine reducer are respectively installed on both sides of the tool magazine base plate. The rotating tool disc 81 rotates under the drive of the tool magazine servo motor and the tool reducer. The rotating tool disc 81 is equipped with a plurality of claws 82, and the plurality of claws 82 are arranged on the same circumference with the center of the rotating tool disc 81 as the center. The scraping tool 53 is installed on the claw 82.

[0050] Specifically, the X-axis module 20, the Y-axis module 40 and the Z-axis module 30 form a three-dimensional rectangular coordinate system. The permanent magnet synchronous electric spindle 50 is arranged on the Y-axis module 40, and driven by the X-axis module 20 and the Z-axis module 30, the scraping tool 53 moves in a vertical plane.

[0051] Specifically, when the tool needs to be changed, the tool magazine servo motor and the tool magazine reducer rotate the rotating tool disc 81, and rotate the tool to be replaced to the same angle direction as the permanent magnet synchronous electric spindle 50. The X-axis module 20 and the Z-axis module 30 drive the permanent magnet synchronous electric spindle 50 to move to the tool magazine assembly 80 to replace the scraping tool 53.

[0052] Preferably, the Y-axis module 40 includes a Y-axis servo motor 41, a Y-axis ball screw, a Y-axis movable part 43, a Y-axis equipment mounting frame and a Y-axis linear guide rail 42 group arranged on both sides of the Y-axis ball screw. The Y-axis ball screw is horizontally installed on the workbench 10 and is vertically arranged with the X-axis module 20. The Y-axis movable part 43 is installed above the Y-axis linear guide rail 42 group and moves back and forth along the Y-axis ball screw and the Y-axis linear guide rail 42 group under the push of the Y-axis servo motor 41. The Y-axis equipment mounting frame is fixedly installed on the Y-axis movable part 43.

[0053] Preferably, the CNC five-axis machining center device also includes a B-axis module 60 and a C-axis module 70, the B-axis module 60 is arranged on the Y-axis equipment mounting frame, and the C-axis module 70 is rigidly connected to the top of the B-axis module 60; the B-axis module 60 includes a B-axis rotating motor, a B-axis reducer and a B-axis connecting plate, the B-axis connecting member 61 is installed on the B-axis reducer, the B-axis rotating motor drives the B-axis reducer to rotate, and drives the B-axis connecting member 61 to rotate with the Y-axis direction as the rotation axis.

[0054] Specifically, the Y-axis equipment mounting frame includes a Y-axis clamp 44 and a Y-axis equipment fixing part 45. The Y-axis equipment fixing part 45 is cylindrical. The Y-axis equipment fixing part 45 is fixedly mounted on the Y-axis movable part 43 by the Y-axis clamp 44. The B-axis rotating motor and the B-axis reducer are fixedly mounted in the Y-axis equipment fixing part 45. The B-axis connecting part 61 can be rotatably mounted on the top of the Y-axis equipment fixing part 45.

[0055] Preferably, the C-axis module 70 includes a C-axis rotating motor 71, a C-axis reducer 72 and a workpiece rotating shaft 73. The workpiece rotating shaft 73 is installed on the C-axis reducer 72. A workpiece 200 to be processed is provided on the workpiece rotating shaft 73. The C-axis rotating motor 71 drives the C-axis reducer 72 to rotate, and drives the workpiece rotating shaft 73 to rotate. The rotation axis of the workpiece rotating shaft 73 is perpendicular to the rotation axis of the B-axis connecting member 61.

[0056] Specifically, the C-axis module 70 is installed on the B-axis connecting member 61. In the present embodiment, the B-axis connecting member 61 is a right-angle connecting member, and two mutually perpendicular connecting surfaces respectively connect the B-axis module 60 and the C-axis module 70, so that the rotation axis of the C-axis module 70 and the rotation axis of the B-axis module 60 are mutually perpendicular.

[0057] Specifically, the workbench 10 has a debris collection hole 12, which is arranged below the workpiece rotation axis 73. The debris collection hole 12 is a funnel-shaped sinking hole, so that the processing debris of the sheet material is gathered at the bottom of the debris collection hole 12 along the inner wall of the debris collection hole 12.

[0058] Specifically, the debris generated during the processing of the workpiece falls into the debris collection hole 12 on the workbench 10, slides along the inner wall of the debris collection hole 12 to the bottom of the debris collection hole 12, thereby improving the recovery rate of the debris.

[0059] Also, see Figure 8 , a scraping processing method based on a five-axis CNC scraping device is shown, which is used for the scraping processing process of the five-axis CNC scraping device used in the jewelry industry as described above, including the following specific steps:

[0060] Step S10, establishing a plurality of layers, and drawing a plane line in each of the layers, wherein the plane line is a 2D line with depth.

[0061] Specifically, the plane lines are drawn in layers according to the processing technology design drawings, and the plane lines of different processing technologies, that is, 2D lines with depth, are located in different layers.

[0062] Step S11, formulating the processing procedures of the product, arranging the plurality of layers according to the processing procedures of the product.

[0063] Specifically, the sequential arrangement of the layers is beneficial to the replacement of the tool and the setting of the tool path in the subsequent steps, so that the CNC equipment can perform scraping and carving on the surface of the jewelry product according to the specified processing technology.

[0064] Step S20, creating 2D plane lines and 3D curved surface lines.

[0065] Specifically, 2D plane lines and 3D curved lines are drawn in different layers according to the design drawings, thereby realizing the decomposition of the scraped pattern. When a line in the design drawing changes, only the lines in a certain layer need to be modified, which is conducive to the modification of the scraped pattern and avoids the problem of redesigning the entire scraped pattern.

[0066] Step S30, select a corresponding scraping tool and set processing parameters of the scraping tool, open the layer corresponding to the scraping tool, and generate a tool path.

[0067] Specifically, the process toolbar in the design interface includes tool selection and tool processing parameter modification, which facilitates the setting of processing parameters of different tools for CNC equipment and improves work efficiency.

[0068] Among them, several layers are arranged in the order of tool size to facilitate tool installation and identification. Processing parameters include product diameter, surface width, curvature and turntable height.

[0069] The tool path includes five-axis dot, five-axis curve, five-axis area, six-axis curve, curved knife and shading processing, etc., and the complex patterns on the surface of the product can be scraped and engraved by applying different tool paths. The tool path includes the processing of the workpiece using various scraping tools.

[0070] Due to the particularity of six-axis curve processing, the spindle in the CNC equipment is used as the sixth axis, and the scraping tool installed on the spindle needs to be tangent to the 2D plane line and the 3D curved surface line. This can only be achieved by rotating the scraping tool head of the scraping tool on the spindle. In this embodiment, the permanent magnet synchronous electric spindle is used as the sixth axis, and the scraping tool head of the scraping tool is made tangent to the 2D plane line or the 3D curved surface line by rotating the permanent magnet synchronous electric spindle, thereby realizing six-axis curve processing based on the existing 3D modeling CNC equipment.

[0071] Step S40, displaying the tool path on the 3D surface model of the product and generating a corresponding G code program.

[0072] Specifically, the tool path is implemented through programming software. The programming software in this embodiment uses a plug-in of the Rhino 3D modeling software, which deeply integrates the characteristics of the Rhino software itself. While using the programming software, the relevant modeling functions of the Rhino software can be directly utilized, realizing the integration of product design and processing programming, improving efficiency and saving costs.

[0073] Step S50: The ultrasonic actuator in the CNC device drives the scraping tool to scrape and carve the jewelry product according to the G code program.

[0074] Specifically, before starting the CNC equipment, you need to complete the preparation work, please refer to Fig. 9 , including:

[0075] Step S51, installing the scraping tool onto the ultrasonic actuator.

[0076] Step S52, the workpiece to be processed is fixedly placed on the workpiece rotation axis.

[0077] Step S53, setting processing parameters in the CNC equipment.

[0078] Step S54, transmitting the tool path data to the CNC equipment.

[0079] Specifically, the tool is installed and adjusted on the CNC equipment, the workpiece to be processed is installed, and the processing parameters of the tool are set in the CNC equipment. After the tool in the CNC equipment and the workpiece to be processed are installed, the tool path generated in the computer is transmitted to the CNC equipment. After completing the preparation work before starting the CNC equipment, the CNC equipment is started, and the CNC equipment begins to scrape and carve the workpiece.

[0080] Specifically, the scraping pattern is decomposed into several 2D plane lines and 3D curved surface lines, each of which is located in a different layer. When the size of the processed product changes, it is only necessary to modify the processing parameters of the tool, select several layers corresponding to the tool to generate a new tool path, and then display the newly generated tool path on the modified 3D curved surface model of the product, thereby completing the modification of the scraping pattern of the product without redesigning a new scraping pattern, thus reducing the design time of the scraping pattern, improving the efficiency of scraping carving, and reducing costs.

[0081] In the above-mentioned five-axis CNC scraping equipment and scraping processing method for the jewelry industry, the permanent magnet synchronous electric spindle is fixedly installed with the scraping tool through the ultrasonic actuator, and the CNC five-axis machining center device drives the workpiece to be processed to move. The scraping tool, driven by the permanent magnet synchronous electric spindle and the ultrasonic actuator, acts on the surface of the workpiece to be processed with a certain pressure, so that the scraping tool produces a corresponding pattern on the surface of the workpiece to be processed. At the same time, under the action of the ultrasonic wave emitted by the ultrasonic actuator, the scraping tool produces a high-frequency micron-level amplitude, and the scraping tool produces a continuous impact force on the surface of the workpiece to be processed, so that the pattern on the surface of the workpiece to be processed has a colorful silk effect. The automated operation of the scraping process ensures the consistency of product quality, reduces labor production costs, and improves production efficiency. In the scraping processing method, the scraping pattern is decomposed into a plurality of 2D plane lines and 3D curved surface lines, and each 2D plane line and 3D curved surface line is located in a layer, and corresponds to the tool through the layer. After the processing parameters of the tool are set, the plurality of layers form a tool path, and the computer transmits the tool path to the CNC device. After the tool and the processed product in the CNC device are installed, the CNC device is turned on, and each tool in the CNC device performs scraping carving on the surface of the workpiece to be processed according to the tool path in turn. When the size of the processed product changes, only the processing parameters of the tool need to be modified to complete the modification of the scraping pattern, and there is no need to redraw the scraping pattern, thereby improving the working efficiency of the scraping carving of the CNC device and reducing the cost. The structure of the invention is simple, easy to implement, low cost, and easy to promote.

[0082] It should be noted that the above is only a preferred embodiment of the present invention and is not intended to limit the present invention. For those skilled in the art, the present invention may have various modifications and changes. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A scraping processing method based on a five-axis CNC scraping device, comprising a five-axis CNC scraping device for the jewelry industry, the device is used to generate a predetermined pattern on the surface of a workpiece to be processed, characterized in that: The five-axis CNC scraping equipment includes a CNC five-axis machining center device, which is provided with an ultrasonic mechanism, a spindle and a workpiece rotating axis, the spindle is equipped with the ultrasonic mechanism and the scraping tool, the workpiece rotating axis is used to install the workpiece to be processed, the scraping tool is tangent to the depth direction of the lines of the predetermined pattern to be processed, the spindle drives the ultrasonic mechanism and the scraping tool to move, and the scraping tool generates a color silk-screen scraping pattern on the surface of the workpiece to be processed under the action of the ultrasonic mechanism; wherein the ultrasonic mechanism includes an ultrasonic actuator, the top end of the ultrasonic actuator has a tool handle mounting position, and the scraping tool is installed at the tool handle mounting position; the scraping tool has a clamping end and a cutting end opposite to the clamping end, the cutting end has a plurality of inclined surfaces with different inclination angles, and a scraping tool head is provided at the converging tip of the plurality of inclined surfaces, the scraping tool head is a raised sheet-like blade, the top edge of the scraping tool head has a curvature, and the top edge of the scraping tool head is a blade acting on the workpiece to be processed; The ultrasonic mechanism also includes an ultrasonic generator connector, the spindle adopts a permanent magnet synchronous electric spindle, the ultrasonic actuator is fixedly mounted on the top of the permanent magnet synchronous electric spindle, the ultrasonic generator connector has two protruding mounting connectors, the ultrasonic generator connector is arranged on the front end side of the permanent magnet synchronous electric spindle, and the two mounting connectors are fixedly mounted on the permanent magnet synchronous electric spindle and the ultrasonic actuator respectively; It also includes the scraping process of five-axis CNC scraping equipment based on the jewelry industry. The specific steps are as follows: Establishing a plurality of layers, and drawing a plane line in each of the layers, wherein the plane line is a 2D line with depth; Create 2D plane lines and 3D curved surface lines. Draw 2D plane lines and 3D curved surface lines in different layers according to the design drawings. Select the corresponding scraping tool and set the processing parameters of the scraping tool, open the layer corresponding to the scraping tool, and generate the tool path; the processing parameters include the product diameter, surface width, camber and turntable height; Display the tool path on the 3D surface model of the product and generate a corresponding G code program; wherein the tool path includes five-axis point punching, five-axis curve, five-axis area, six-axis curve, curved knife and shading processing; The ultrasonic actuator in the CNC equipment drives the scraping tool to scrape and carve the jewelry product according to the G code program.

2. The scraping processing method based on the five-axis CNC scraping equipment according to claim 1 is characterized in that: It also includes a workbench and an equipment support arranged on the workbench, the equipment support includes a crossbeam and columns at both ends of the crossbeam, the CNC five-axis machining center device includes X-axis modules, Y-axis modules and Z-axis modules that are arranged perpendicular to each other in pairs, the X-axis module is horizontally arranged on the crossbeam of the equipment support, the Z-axis module is vertically arranged on the X-axis module, and the Y-axis module is horizontally arranged on the workbench below the equipment support and is arranged perpendicular to the X-axis module.

3. The scraping processing method based on the five-axis CNC scraping equipment according to claim 2 is characterized in that: The X-axis module includes an X-axis servo motor, an X-axis ball screw, an X-axis movable part and an X-axis linear guide group arranged on both sides of the X-axis ball screw, the X-axis ball screw is horizontally installed on the crossbeam, the X-axis movable part is arranged on the X-axis linear guide group, the Z-axis module is arranged on the X-axis movable part, the X-axis servo motor drives the X-axis movable part and the Z-axis module to move left and right on the X-axis linear guide group along the direction of the X-axis ball screw; the Z-axis module includes a Z-axis servo motor, a Z-axis ball screw, a spindle connecting plate and a Z-axis linear guide group arranged on both sides of the Z-axis ball screw, the spindle connecting plate is arranged on the Z-axis linear guide group, the Z-axis servo motor drives the spindle connecting plate to move up and down above the Z-axis linear guide group along the direction of the Z-axis ball screw, and the permanent magnet synchronous electric spindle is fixedly installed on the spindle connecting plate.

4. The scraping processing method based on the five-axis CNC scraping equipment according to claim 2 is characterized in that: It also includes a tool magazine assembly, which is fixedly installed on the column of the equipment bracket through a tool magazine fixing plate. The tool magazine assembly includes a tool magazine servo motor, a tool magazine reducer, a tool magazine base plate and a rotating tool disc. The rotating tool disc and the tool magazine servo motor and the tool magazine reducer are respectively installed on both sides of the tool magazine base plate. The rotating tool disc rotates under the drive of the tool magazine servo motor and the tool magazine reducer. The rotating tool disc is equipped with a plurality of claws, and the plurality of claws are arranged on the same circumference with the center of the rotating tool disc as the center. The scraping tool is installed on the claw.

5. The scraping processing method based on the five-axis CNC scraping equipment according to claim 2 is characterized in that: The Y-axis module includes a Y-axis servo motor, a Y-axis ball screw, a Y-axis movable part, a Y-axis equipment mounting frame and a Y-axis linear guide group arranged on both sides of the Y-axis ball screw. The Y-axis ball screw is horizontally installed on the workbench and is vertically arranged with the X-axis module. The Y-axis movable part is installed above the Y-axis linear guide group and moves forward and backward along the Y-axis ball screw and the Y-axis linear guide group under the push of the Y-axis servo motor. The Y-axis equipment mounting frame is fixedly installed on the Y-axis movable part.

6. The scraping processing method based on the five-axis CNC scraping equipment according to claim 5 is characterized in that: The CNC five-axis machining center device also includes a B-axis module and a C-axis module. The B-axis module is arranged on the Y-axis equipment mounting frame, and the C-axis module is rigidly connected to the top of the B-axis module; the B-axis module includes a B-axis rotating motor, a B-axis reducer and a B-axis connecting member, and the B-axis connecting member is installed on the B-axis reducer. The B-axis rotating motor drives the B-axis reducer to rotate, and drives the B-axis connecting member to rotate with the Y-axis direction as the rotating axis; the C-axis module includes a C-axis rotating motor, a C-axis reducer and a workpiece rotating axis, and the workpiece rotating axis is installed on the C-axis reducer. A workpiece to be processed is arranged on the workpiece rotating axis, and the C-axis rotating motor drives the C-axis reducer to rotate, and drives the workpiece rotating axis to rotate, and the rotating axis of the workpiece rotating axis is perpendicular to the rotating axis of the B-axis connecting member.

7. The scraping processing method based on the five-axis CNC scraping equipment according to claim 1 is characterized in that: The specific steps of performing scraping and engraving on the jewelry product by the scraping tool in the CNC equipment according to the G code program include: Install the scraping tool onto the ultrasonic actuator; The workpiece to be processed is fixedly placed on the workpiece rotating axis; Set machining parameters in CNC equipment; Transmit tool path data to CNC equipment.

Images