High-precision cutting method for high-viscoelastic resin patch based on automatic cutting machine

Abstract

The invention relates to a high-precision cutting method for a high-viscoelastic resin patch based on an automatic cutting machine, which is characterized by comprising the following steps of: 1, generating a file compatible with cutting machine software through two-dimensional drawing software, and importing the file into the cutting machine; the two-dimensional drawing is used for drawing graphs with different characteristics in a layered manner according to used cutters, namely, the graphs using one cutter are placed in one graph layer; then, combining a plurality of diagrams drawn in a layered manner: integrally combining continuous line segments to prevent frequent cutter lifting in a cutting process; the problems that in the existing cutting process, the quality of cut sections is uneven, the size precision is low, the cutting efficiency is low, material pieces in a non-cutting area are greatly deformed, and the material pieces are polluted by cut chippings are solved.

Description

Technical Field

[0001] The invention relates to the technical field of composite material cutting, and in particular to a high-precision cutting method for a high-viscosity elastic resin patch with a thickness of 2 to 12 mm processed by an automatic cutting machine. Background Art

[0002] At present, automated cutting technology has been widely used in the field of composite materials. Automated cutting machines can realize the cutting of sheet materials such as fiber fabrics and fiber prepregs, but they can only realize the cutting of thin sheets (0-2mm) in straight lines or arcs with small curvature. However, for the large curvature special-shaped cutting of thick, high viscoelastic, and easy-to-stick tool-like materials, the existing cutting or punching methods are still used, which has problems such as uneven cutting section quality, low dimensional accuracy, low cutting efficiency, and extremely large deformation of the sheet in the non-cutting area, and the contamination of the sheet by cutting debris, which is not suitable for batch application. To this end, the present invention is based on an automated high-frequency vibration cutting machine to provide a large curvature, high-precision, and high-efficiency cutting method that can achieve high-viscoelastic sheet materials with a thickness of 2-12mm. Summary of the invention

[0003] The purpose of the present invention is to provide a high-precision cutting method for high-viscosity elastic resin patches based on an automatic cutting machine. The present invention is based on the automatic cutting machine and realizes large curvature, high-precision and high-efficiency cutting of high-viscosity elastic sheet materials with a thickness of 2 to 12 mm by selecting a pneumatic vibrating knife, matching special-shaped tools, and adjusting relevant parameters.

[0004] A high-precision cutting method for a high-viscosity elastic resin patch based on an automatic cutting machine, characterized in that it comprises the following steps:

[0005] Step 1: Generate a file compatible with the cutting machine software through 2D drawing software, and import the file into the cutting machine; 2D drawing is to draw graphics with different features in layers according to the tools used, that is, put the graphics of one tool in one layer; then combine multiple layered drawings: merge continuous line segments into one to prevent frequent lifting of the tool during cutting;

[0006] Step 2: Select the pneumatic vibration knife and the matching special-shaped knife according to the thickness of the sheet and the cutting curvature, and set the relevant processing parameters, including: the depth of the knife, the movement speed and the eccentric size parameters; use the pneumatic vibration knife to cut straight lines and arcs with larger diameters; when the diameter of the nail hole or window is less than 20mm, the graphic lines need to be cut by special-shaped knives;

[0007] Step 3: Install the cylindrical tool protection cover 9 on the cutting tool;

[0008] Step 4: The high-viscosity elastic sheet material to be cut, which is covered with surface films on the upper and lower surfaces, is adsorbed on the cutting bed of the automatic cutting machine by a negative pressure blower;

[0009] Step 5, start the cutting machine, prepare for the knife and select the starting cutting point, and start cutting the high-viscoelastic sheet material; after the cutting starts, the tool protection cover moves downward to the position where it is about to contact the sheet material to be cut, and the movement of the tool protection cover is stopped. The special tool installed on the tool vibration component is in an upright state and starts to vibrate at a high frequency within a range of 5mm up and down. After the tool vibration component moves downward until the sheet material to be cut is completely cut off, it starts to move along the trajectory specified by the program to cut the sheet material; until the pattern that requires the tool to cut is completed; when it moves to the last cutting point, the tool vibration component moves upward to the standby position where the sheet material to be cut is completely not in contact with the sheet material to be cut, and then stops the vibration of the characteristic tool, and the tool protection cover moves upward to the standby position, so that the tool protection cover leaves the high-viscoelastic sheet material to be cut; in this process, the tool protection cover can prevent the cut sheet material from being adhered to the tool and leaving the cutting bed of the automatic cutting machine, and at the same time can scrape off the adhered material scraps on the tool, and the scraped adhered material scraps scraped off when the tool protection cover is lifted can be discharged from the vent;

[0010] If the cutting tool needs to be replaced, the cutting tool is replaced before cutting other patterns until all patterns are cut.

[0011] Among them, in step 1, the file compatible with the cutting machine software is generated by the two-dimensional drawing software as follows: draw a two-dimensional figure according to the shape of the high-viscoelastic sheet material to be cut, and divide the two-dimensional figure into three layers: 1) set the graphic lines that require customized tool cutting for nail holes or windows with a size less than 20mm as layer A; 2) set the marking lines on the surface of the sheet as layer B; set other graphic lines that are cut with general tools as layer C; after drawing, Each layer Continuous line segments are merged into one to prevent frequent lifting of the knife during cutting; the drawn graphics are converted into DXF file format to prevent garbled graphics after importing the file; when cutting, each layer corresponds to a tool; after one layer is cut, the tool is changed to cut the pattern of another layer; until all layers are cut.

[0012] Among them, when the cutting nail hole or window diameter is less than 20mm, and the thickness of the high-viscosity elastic sheet material is between 2 and 6mm, it is necessary to install a special-shaped tool for cutting the graphic lines of the small-thickness high-viscosity elastic sheet material on the pneumatic vibration chuck; the driving air pressure is set to 0.2-0.4MPa;

[0013] When the cutting nail hole or window diameter is less than 20mm, and the thickness of the high-viscosity elastic sheet material is greater than 6mm, it is necessary to install a special tool for cutting graphic lines of thick high-viscosity elastic sheet materials on the pneumatic vibration chuck; the driving air pressure is set to 0.4-0.6MPa; to ensure that the material is cut smoothly during the small diameter rotary cutting process, while ensuring the strength and rigidity of the tool itself, so that the swing amplitude of the tool tip is less than ±0.02mm.

[0014] In the step 2, the pneumatic vibrating knife and the special-shaped knife are selected according to the thickness of the sheet and the cutting curvature, and the relevant processing parameters are set, including: the knife depth is calculated as follows: L 料片厚度 *0.1+L 台面落差 +E 刀具补偿系数 , the movement speed is calculated as follows: 10 / L 料片厚度 The result is rounded to the nearest integer * 0.01, and the eccentricity is offset 1 to 3 mm to the outside according to the need. Compared with the calculation method of the knife depth in the general cutting method, E is added. 刀具补偿系数 The movement speed is reduced from the commonly used 0.2-1m / s to 0.01-0.05m / s. According to the shrinkage characteristics of the viscoelastic material after cutting, the non-eccentric size is increased by 1-3mm outward.

[0015] The cylindrical tool protection sleeve 9 used in the high-precision cutting method of high-viscosity elastic resin patches based on an automated cutting machine is characterized in that the cylindrical tool protection sleeve 9 is cylindrical, and includes a tubular sleeve body 92 and a circular end face 91 at the tool extension end, and a narrow tool extension hole 911 is provided in the middle of the circular end face 91, and the tool extension hole 911 is matched with the tool gap, and a vent hole 912 is also provided on the circular end face 91, and a distance is set between the vent hole 912 and the tool extension hole 911; a chamfer 913 is provided on the outer edge of the circular end face 91; the cylindrical tool protection sleeve 9 can ensure that the tool prevents the sheet from being lifted up during the up and down reciprocating cutting process, and at the same time scrapes off the material powder adhering to the tool, and the scraped material powder falls out from the surrounding vents to avoid affecting the cutting quality.

[0016] The special-shaped tool 3 for small-thickness high-viscosity elastic sheet materials used in the high-precision cutting method of high-viscosity elastic resin patches based on an automatic cutting machine is characterized in that the angle between the special-shaped tool back 32 for small-thickness high-viscosity elastic sheet materials and the special-shaped tool blade 31 for small-thickness high-viscosity elastic sheet materials is 10°~12°.

[0017] The special-shaped tool 09 for thick high-viscosity elastic sheet materials used in the high-precision cutting method of high-viscosity elastic resin patches based on an automatic cutting machine is characterized in that when the back of the special-shaped tool 091 for thick high-viscosity elastic sheet materials is perpendicular to the horizontal plane, the angle between the main blade 092 of the special-shaped tool for thick high-viscosity elastic sheet materials and the horizontal plane is 80°~88°, and the angle between the blade 093 at the tip of the special-shaped tool for thick high-viscosity elastic sheet materials and the horizontal plane is 66°~73°; and there is an arc blade 095 at the upper end of the main blade 092, and the arc blade 095 is connected to the horizontal blade 094 as a whole.

[0018] The method of the present invention fully considers all key links in the cutting of high-viscosity elastic resin patches. The present invention can use an automated high-frequency vibration cutting machine to cut the resin patches with precise size and reliable quality. It solves the problems of uneven cutting cross-section quality, low dimensional accuracy, low cutting efficiency, and extremely large deformation of the material in the non-cutting area and contamination of the material by cutting debris in the existing cutting process. It realizes high-precision and automated production of high-viscosity elastic resin patches, improves the cutting efficiency of resin patches, and meets the needs of mass production. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 , a schematic diagram of a plane expansion of a certain antenna heat protection material according to an example of the present invention;

[0020] Figure 2 , a schematic diagram of the appearance of Z03 according to an example of the present invention;

[0021] Figure 3 , a schematic diagram of Z03 tool parameters according to an example of the present invention;

[0022] Figure 4 , a schematic diagram of a plane expansion of a heat-resistant material for a special-shaped structural part according to an example of the present invention;

[0023] Figure 5 , a schematic diagram of the L09 appearance of an example of the present invention;

[0024] Figure 6 , a schematic diagram of L09 tool parameters according to an example of the present invention;

[0025] Figure 7 , a schematic diagram of a certain antenna heat protection material patch according to an example of the present invention;

[0026] Figure 8 , a schematic diagram of a heat-resistant patch for a special-shaped structural part according to an example of the present invention;

[0027] Fig. 9 , a schematic diagram of a tool protection sleeve of the present invention;

[0028] Fig.10, a schematic diagram of a special-shaped tool for a thin-thickness, high-viscoelastic sheet material according to the present invention;

[0029] Fig.11 , a schematic diagram of a special-shaped tool for thick and highly viscous and elastic sheet materials according to the present invention. DETAILED DESCRIPTION

[0030] A high-precision cutting method for a high-viscosity elastic resin patch based on an automatic cutting machine specifically comprises the following steps:

[0031] 1) Generate files compatible with cutting machine software through 2D drawing software such as AutoCAD:

[0032] Draw a two-dimensional graphic according to the shape that needs to be cut of the high-viscoelastic sheet material, and set the graphic lines that need to be cut with a customized tool for nail holes or windows with a size less than 20 mm as layer A, the marking lines on the surface of the sheet as layer B, and the other graphic lines that are cut with a general tool as layer C. After drawing, merge the continuous line segments into one to prevent the tool from being frequently lifted during the cutting process; compared with the general cutting method in which only one layer and one tool are set for cutting at a time, the present invention realizes multiple layers to distinguish geometric line segment features according to the above method, each layer corresponds to a tool, and the tool is changed for cutting at the same time, which can effectively improve the cutting effect and cutting rate of the viscoelastic material; convert the drawn graphics into DXF file format, and the file version is recommended not to exceed DXF 2004 / LT2004 to prevent garbled graphics after importing the file;

[0033] 2) Select pneumatic vibrating knife and special-shaped knife according to the thickness of the sheet and the cutting curvature, and set relevant processing parameters, including: cutting depth, movement speed, eccentric size and other parameters:

[0034] When the sheet thickness is 2-6mm, a customized tool Z03 is installed on the pneumatic vibration chuck, and the driving air pressure is set to 0.2-0.4MPa; when the sheet thickness is 7-12mm, a customized tool L09 is installed on the pneumatic vibration chuck, and the driving air pressure is set to 0.4-0.6MPa; while ensuring that the material is smoothly cut through during the small diameter rotary cutting process, the strength and rigidity of the tool itself are guaranteed, so that the swing amplitude of the tool tip is less than ±0.02mm, and the cutting accuracy and tool life are improved; considering that the cutting resistance, single cutting width, and offset distance of the cutting tip from the rotation midpoint of different tools are all different, it is necessary to set the parameters such as the drop depth, movement speed, and eccentric size according to the selected tool, and the drop depth is calculated as follows: L 料片厚度 *0.1+L 台面落差 +E 刀具补偿系数 , the movement speed is calculated as follows: 10 / L 料片厚度The result is rounded to the nearest integer * 0.01. According to the shrinkage characteristics of the viscoelastic material after cutting, the eccentric size is shifted 1 to 3 mm outward as needed;

[0035] 3) The cutting tool needs to be equipped with a customized protective cover to prevent the sheet from being lifted up during the up and down reciprocating cutting process, and to scrape off the material dust adhering to the tool to avoid affecting the cutting quality;

[0036] 4) The sheet material to be cut is covered with release paper on both sides, and is placed on the cutting bed of the automatic cutting machine by a negative pressure blower to prevent the sheet from moving during the cutting process;

[0037] 5) Start the cutting machine, prepare by aligning the knife, selecting the starting cutting point, and after confirming that the cutting area is correct, start cutting the sheet material to obtain the required high-precision resin patch.

[0038] 6) The cut pieces are placed in a cold storage for standby use, and the remaining scraps are recycled;

[0039] Among them, the two-dimensional drawing software is AutoCAD software, Kaimu, Haochen CAD, ZWCAD, etc., any one of which is preferably AutoCAD software.

[0040] Among them, the upper and lower surfaces of the high-viscosity elastic sheet material are covered with a layer of film, which can be a release film, release paper, polytetrafluoroethylene cloth, demolding cloth, etc. Any one of them can provide a certain coating support for the cutting material in this example. Considering the economy and material contact compatibility, release paper is preferred.

[0041] Among them, the tool described in step 2) is a high-frequency vibration sharp knife, a round knife, a V-shaped knife, etc., any one of which can be used alone, or any combination of several of them can be used. To ensure the quality of cutting, it is preferred to use a high-frequency vibration sharp knife alone.

[0042] The relevant parameters set for the cutting machine in step 2) are only reference values ​​for the method of this embodiment of the invention.

[0043] Among them, the protective cover described in step 3) is a fully covered structure, and a gap 0.2mm larger than the width of the tool is left in the middle just below the tool. The tool is driven by compressed air, and the driving air pressure is adjusted according to the characteristics of the cutting material. The tool moves up and down through the gap with high frequency. When the adhesion on the tool is larger than the gap width, the adhesion will be scraped off and can pass through at the same time.

[0044] The present invention is further illustrated by the following examples.

[0045] Example 1: Automatic cutting of high-viscosity elastic resin patches containing large-curvature circular hole patterns

[0046] As shown in the cutting pattern 1 of this embodiment, the cutting pattern contains 4 circular nail holes with a diameter of 4mm, the middle is a rectangle, the rounded corner of the rectangle is R3, and the required resin patch thickness is 4.5mm. The circular nail holes and rounded corners in the cutting pattern 1 of this embodiment are set as layer A, the marking lines on the surface of the material are set as layer B, and the other lines are set as layer C. Convert and generate a DXF format file, import it into the cutting machine, and select a pneumatic vibration knife. The pattern contains a large curvature arc with a diameter of less than 5mm, and it is necessary to select Figure 2 The tool is customized, and the tool shape parameters are Figure 3 , a custom protective cover 9 is installed around the tool. Set the cutting machine parameters, the cutting depth is 74.8mm, the movement speed is 0.02m / s, and the eccentricity is 3mm. Place the 4.5mm resin patch covered with release paper on the cutting bed, align the knife, select the cutting starting point, start the program, and complete the cutting of the resin patch. The cut resin patch 7 has neat edges, the size error is within ±0.5mm, and the cutting time is 34s.

[0047] Implementation 2: Automatic cutting of thick and highly viscous elastic resin patches

[0048] This embodiment cuts Figure 4 As shown, the thickness of the resin patch is 8mm, and the graphic contains several circles with a diameter range of 6 to 40mm. The circular nail holes and rounded corners in the cutting graphic 4 of this embodiment are set as layer A, the surface marking lines of the material sheet are set as layer B, and the other lines are set as layer C. The file is converted to a DXF format file and imported into the cutting machine. A pneumatic vibrating knife is selected, the thickness of the resin patch is 8mm, a customized tool 5 is selected, the tool shape parameter is 6, and a customized protective cover 9 is installed around the tool. Set the cutting machine parameters, the knife depth is 74.5mm, the movement speed is 0.01m / s, and the eccentricity size is 1mm. Place the 8mm resin patch covered with release paper on the cutting bed, align the knife, select the starting point of cutting, start the program, and complete the cutting of the resin patch. The cut resin patch 8 has neat edges, a dimensional error within ±1mm, and a cutting time of 1min42s.

[0049] Example:

[0050] Embodiment 3: A high-precision cutting method for a high-viscosity elastic resin patch based on an automated cutting machine, wherein the characteristic steps are:

[0051] (1) Generate a file compatible with the cutting machine software through 2D drawing software and import the file into the cutting machine.

[0052] (2) Select pneumatic vibrating knife and special-shaped tool according to sheet thickness and cutting curvature, and set relevant processing parameters, including: cutting depth, movement speed, eccentricity size and other parameters.

[0053] (3) The cutting tool needs to be installed with a customized protective cover.

[0054] (4) The sheet material to be cut is adsorbed onto the cutting bed of the automatic cutting machine by a negative pressure blower.

[0055] (5) Start the cutting machine, align the knife, select the starting cutting point, and start cutting the sheet material to obtain the required high-precision resin patch.

[0056] An automated high-frequency vibration cutting machine is used to cut a highly viscous and elastic sheet material with a thickness of 2 to 12 mm.

[0057] At the same time, the graphic lines that require customized cutting tools for nail holes or windows with a size less than 20 mm are set as layer A, the marking lines on the surface of the sheet are set as layer B, and the other graphic lines that are cut with a general cutting tool are set as layer C. After drawing, the continuous line segments are merged into one to prevent frequent lifting of the knife during the cutting process; compared with the general cutting method in which only one layer and one cutting tool are set for cutting at a time, the present invention realizes multiple layers to distinguish geometric line segment features according to the above method, each layer corresponds to a cutting tool, and the cutting is performed by changing the tool at the same time, which can effectively improve the cutting effect and cutting rate of the viscoelastic material;

[0058] According to the thickness of the sheet and the curvature of the cutting, the pneumatic vibration knife is selected, the special-shaped knife is matched, the cutting layer setting rules are set, the surface coating material is selected, and the relevant processing parameters are set, including: the cutting depth is calculated as follows: L 料片厚度 *0.1+L 台面落差 +E 刀具补偿系数 , the movement speed is calculated as follows: 10 / L 料片厚度 The result is rounded to the nearest integer * 0.01, and the eccentricity is offset 1 to 3 mm to the outside according to the need. Compared with the calculation method of the knife depth in the general cutting method, E is added. 刀具补偿系数 The movement speed is reduced from the commonly used 20-100 mm / s to 0.01-0.05 mm / s. According to the shrinkage characteristics of the viscoelastic material after cutting, the non-eccentric size is increased by 1-3 mm to the outside and other parameters, which can effectively improve the cutting effect of the viscoelastic material.

[0059] When the thickness of the sheet is 2-6mm, a customized tool Z03 is installed on the pneumatic vibration chuck, and the driving air pressure is set to 0.2-0.4MPa; when the thickness of the sheet is 7-12mm, a customized tool L09 is installed on the pneumatic vibration chuck, and the driving air pressure is set to 0.4-0.6MPa; compared with the 0.5-0.8MPa required in the general cutting method, the driving air pressure setting range can be more specifically standardized according to the working characteristics of the tool in the present invention, ensuring that the material is smoothly cut through during the small diameter rotary cutting process, while ensuring the strength and rigidity of the tool itself, so that the swing amplitude of the tool tip is less than ±0.02mm, thereby improving the cutting accuracy and tool life;

[0060] A customized protective cover 9 is installed around the cutting tool. Compared with the general cutting protective cover, it can prevent the material from being lifted up during the up and down reciprocating cutting process of the tool, and at the same time scrape off the material powder adhering to the tool, and let the scraped material powder fall out from the circular holes around it to avoid affecting the cutting quality.

[0061] Embodiment 4:

[0062] The cutting pattern of this embodiment is as follows Figure 1 As shown, the cutting pattern contains 4 circular nail holes with a diameter of 4mm, the middle is a rectangle, the rectangle has a rounded corner of R3, and the required resin patch thickness is 4.5mm. Set the circular nail holes and rounded corners in the cutting pattern 1 of this embodiment as layer A, the marking lines on the surface of the material sheet as layer B, and the other lines as layer C. Convert and generate a DXF format file, import it into the cutting machine, and select a pneumatic vibration knife. The pattern contains a large curvature arc with a diameter of less than 5mm, and it is necessary to select Figure 2 The tool is customized, and the tool shape parameters are Figure 3 , a custom protective cover 9 is installed on the periphery of the tool. Set the cutting machine parameters, the cutting depth is 74.8mm, the movement speed is 0.02m / s, and the eccentricity size is 3mm.

[0063] Embodiment 5:

[0064] The cutting pattern of this embodiment is as follows Figure 4 As shown, the thickness of the resin patch is 8mm, and the pattern contains several circles with a diameter of 6 to 40mm. The circular nail holes and rounded corners in the cutting pattern 4 of this embodiment are set as layer A, the marking lines on the surface of the material sheet are set as layer B, and the other lines are set as layer C. The DXF format file is converted and imported into the cutting machine. A pneumatic vibration knife is selected, the thickness of the resin patch is 8mm, a customized tool 5 is selected, the tool shape parameter is 6, and a customized protective cover 9 is installed around the tool. Set the cutting machine parameters, the knife depth is 74.5mm, the movement speed is 0.01m / s, and the eccentricity size is 1mm.

[0065] The technical innovation of the high-precision cutting method of the high-viscosity elastic resin patch based on the automatic cutting machine of the present invention has many advantages for technicians in the same industry today. The high-viscosity elastic resin patch obtained by the automatic cutting of the present invention has neat edges, high dimensional accuracy, and high cutting efficiency, which can meet the needs of mass production and better promote the application of automatic cutting technology in related fields such as composite material cutting.

Claims

1. A high-viscosity elastic resin patch and a high-precision cutting method based on an automatic cutting machine, characterized in that: The following steps are involved: Step 1: Generate a file compatible with the cutting machine software through 2D drawing software, and import the file into the cutting machine; 2D drawing is to draw graphics with different features in layers according to the tools used, that is, put the graphics of one tool in one layer; then combine multiple layered drawings: merge continuous line segments into one to prevent frequent lifting of the tool during cutting; Step 2: Select the pneumatic vibrating knife and the matching special-shaped knife according to the thickness of the sheet and the cutting curvature, and set the relevant processing parameters, including: the cutting depth, movement speed and eccentric size parameters; Use pneumatic vibration knife to cut straight lines and arcs with larger diameters; when the diameter of the nail hole or window is less than 20mm, special-shaped knives are needed to cut the graphic lines; Step 3: Install a cylindrical tool protection cover (9) on the cutting tool; Step 4: The high-viscosity elastic sheet material to be cut, which is covered with surface films on the upper and lower surfaces, is adsorbed on the cutting bed of the automatic cutting machine by a negative pressure blower; Step 5, start the cutting machine, prepare for the knife and select the starting cutting point, and start cutting the high-viscoelastic sheet material; after the cutting starts, the tool protection cover moves downward to the position where it is about to contact the sheet material to be cut, and the movement of the tool protection cover is stopped. The special tool installed on the tool vibration component is in an upright state and starts to vibrate at a high frequency within a range of 5mm up and down. After the tool vibration component moves downward until the sheet material to be cut is completely cut off, it starts to move along the trajectory specified by the program to cut the sheet material; until the pattern that requires the tool to cut is completed; when it moves to the last cutting point, the tool vibration component moves upward to the standby position where the sheet material to be cut is completely not in contact with the sheet material to be cut, and then stops the vibration of the characteristic tool, and the tool protection cover moves upward to the standby position, so that the tool protection cover leaves the high-viscoelastic sheet material to be cut; in this process, the tool protection cover can prevent the cut sheet material from being stuck to the tool and leaving the cutting bed of the automatic cutting machine, and at the same time can scrape off the sticky material scraps on the tool, and the scraped sticky material scraps scraped off when the tool protection cover is lifted can be discharged from the vent; If the cutting tool needs to be replaced, the cutting tool is replaced before cutting other patterns until all patterns are cut.

2. According to a high-viscosity elastic resin patch and high-precision cutting method based on an automatic cutting machine, characterized in that: In step 1, the file compatible with the cutting machine software is generated by the 2D drawing software as follows: Draw a 2D graphic according to the shape of the high-viscoelastic sheet material to be cut, and divide the 2D graphic into three layers: 1) The graphic lines that require customized cutting tools for nail holes or windows with a size of less than 20 mm are set as layer A; 2) The marking lines on the surface of the sheet are set as layer B; Other graphic lines that are cut with general-purpose tools are set as layer C; After drawing, Each layer Continuous line segments are merged into one to prevent frequent lifting of the knife during cutting; Convert the drawn graphics into DXF file format to prevent garbled graphics after importing the file; when cutting, each layer corresponds to a tool; after one layer is cut, change the tool to cut the pattern of another layer; until all layers are cut.

3. A high-viscosity elastic resin patch and high-precision cutting method based on an automatic cutting machine according to claim 1, characterized in that: When the cutting nail hole or window diameter is less than 20mm, and the thickness of the high-viscosity elastic sheet material is between 2 and 6mm, it is necessary to install a special-shaped tool for cutting the graphic lines of the small-thickness high-viscosity elastic sheet material on the pneumatic vibration chuck; the driving air pressure is set to 0.2-0.4MPa; When the cutting nail hole or window diameter is less than 20mm, and the thickness of the high-viscosity elastic sheet material is greater than 6mm, it is necessary to install a special tool for cutting graphic lines of thick high-viscosity elastic sheet materials on the pneumatic vibration chuck; the driving air pressure is set to 0.4-0.6MPa; to ensure that the material is cut smoothly during the small diameter rotary cutting process, while ensuring the strength and rigidity of the tool itself, so that the swing amplitude of the tool tip is less than ±0.02mm.

4. A high-viscosity elastic resin patch and high-precision cutting method based on an automatic cutting machine as claimed in claim 1, characterized in that: In the step 2, the pneumatic vibrating knife and the special-shaped knife are selected according to the thickness of the sheet and the cutting curvature, and the relevant processing parameters are set, including: the knife depth is calculated as follows: L 料片厚度 *0.1+L 台面落差 +E 刀具补偿系数 , the movement speed is calculated as follows: 10 / L 料片厚度 The result is rounded to the nearest integer * 0.01, and the eccentricity is offset 1 to 3 mm to the outside according to the need. Compared with the calculation method of the knife depth in the general cutting method, E is added. 刀具补偿系数 The movement speed is reduced from the commonly used 0.2-1m / s to 0.01-0.05m / s. According to the shrinkage characteristics of the viscoelastic material after cutting, the non-eccentric size is increased by 1-3mm outward.

5. The cylindrical tool protection cover (9) used in the high-viscosity elastic resin patch and high-precision cutting method based on an automatic cutting machine according to claim 1, characterized in that: The cylindrical tool protection sleeve (9) is cylindrical, and comprises a tubular sleeve body (92) and a circular end surface (91) at the tool extension end; a narrow tool extension hole (911) is provided in the middle of the circular end surface (91); the tool extension hole (911) is matched with the tool clearance; a vent hole (912) is also provided on the circular end surface (91); a distance is set between the vent hole (912) and the tool extension hole (911); a chamfer (913) is provided on the outer edge of the circular end surface (91); the cylindrical tool protection sleeve (9) can ensure that the tool prevents the material sheet from being lifted up during the up and down reciprocating cutting process, and at the same time scrapes off the material powder adhering to the tool, and the scraped material powder falls out from the surrounding vent holes to avoid affecting the cutting quality.

6. The special-shaped cutter (3) for small-thickness high-viscosity elastic sheet materials used in the high-viscosity elastic resin patch and high-precision cutting method based on an automatic cutting machine according to claim 1, characterized in that: The angle between the back (32) of the special-shaped tool made of thin-thickness high-viscosity elastic sheet material and the edge (31) of the special-shaped tool made of thin-thickness high-viscosity elastic sheet material is 10° to 12°.

7. The special-shaped cutter (09) for thick and high-viscosity elastic sheet materials used in the high-viscosity elastic resin patch and high-precision cutting method based on an automatic cutting machine according to claim 1, characterized in that: When the back of the special tool (091) for thick and highly viscous elastic sheet material is perpendicular to the horizontal plane, the angle between the main blade (092) of the special tool for thick and highly viscous elastic sheet material and the horizontal plane is 80°-88°, and the angle between the blade (093) at the tip of the special tool for thick and highly viscous elastic sheet material and the horizontal plane is 66°-73°; and a circular arc blade (095) is provided at the upper end of the main blade (092), and the circular arc blade (095) is connected to the horizontal blade (094) as a whole.

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