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

Abstract

The application is a high-precision cutting method of high-viscous-elastic resin patch based on an automatic cutting machine, characterized in that the method comprises the following steps: step one, generating a file compatible with the cutting machine software through two-dimensional drawing software, and importing the file into the cutting machine; two-dimensional drawing is to draw different characteristic graphics in layers according to the used cutting tools, that is, the graphics using one cutting tool are placed in one layer; then, the multiple layered graphics are combined: the continuous line segments are integrally combined to prevent frequent lifting of the cutting tool during the cutting process; the application solves the problems in the existing cutting process, such as uneven cutting section quality, low size precision, low cutting efficiency, great deformation of the patch in the non-cutting area, and cutting debris pollution of the patch.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of composite material cutting, in particular to a high-precision cutting method for high-viscoelastic resin patches with a thickness of 2-12 mm based on automatic cutting machine processing. BACKGROUND

[0002] At present, automatic cutting technology has been widely used in the field of composite materials. Automatic cutting machines can cut fiber fabrics, fiber pre-impregnated sheets and other sheet materials, but they can only cut straight lines or small curvature arcs of thin sheets (0-2 mm). For large curvature cutting of materials with high thickness and high viscoelasticity, the existing cutting or stamping method is still used, which has problems such as uneven cutting section quality, low size accuracy, low cutting efficiency, large deformation of non-cutting area of the sheet, cutting debris pollution of the sheet, etc., and is not suitable for batch application. Therefore, based on an automatic high-frequency vibration cutting machine, the present application provides a large-curvature, high-precision and high-efficiency cutting method for high-viscoelastic sheet materials with a thickness of 2-12 mm. SUMMARY

[0003] The present application aims to provide a high-precision cutting method for high-viscoelastic resin patches based on an automatic cutting machine. The present application is based on an automatic cutting machine, and by selecting a pneumatic vibration knife, cooperating with a special-shaped tool and adjusting relevant parameters, it realizes large-curvature, high-precision and high-efficiency cutting of high-viscoelastic sheet materials with a thickness of 2-12 mm.

[0004] A high-precision cutting method for high-viscoelastic resin patches based on an automatic cutting machine, characterized by the following steps:

[0005] Step one: generate a file compatible with the cutting machine software through a two-dimensional drawing software, and import the file into the cutting machine; two-dimensional drawing is to draw different features of the graph in layers according to the use of the tool, that is, to put the graph using a tool in a layer; then combine multiple layered drawings: integrate the continuous line segments to prevent frequent tool lifting during cutting;

[0006] Step two: select a pneumatic vibration knife and a special-shaped tool according to the thickness and cutting curvature of the sheet, and set relevant processing parameters, including: tool falling depth, movement speed and eccentric size parameters; use the pneumatic vibration knife to cut straight lines and large-diameter arcs; when the pinhole or window diameter size is less than 20 mm, a special-shaped tool is needed to cut the graph lines;

[0007] Step three, install a cylindrical tool protection sleeve 9 on the cutting tool;

[0008] Step four, the upper and lower two surfaces of the high viscoelastic sheet material to be cut are covered with surface film, and are adsorbed on the automatic cutting machine cutting bed by a negative pressure blower;

[0009] Step five, start the cutting machine, perform tool alignment and select the starting cutting point, and start cutting the high viscoelastic sheet material; after the cutting starts, the tool protection sleeve moves downward to a position about to contact the cutting sheet material, the movement of the tool protection sleeve is stopped, the special-shaped tool installed on the tool vibration assembly is in an upright state and starts high-frequency vibration within a range of 5 mm up and down, the tool vibration assembly moves downward to a position where the cutting sheet material is completely cut off, and then starts to move along the program-specified trajectory to cut the sheet material; until the pattern to be cut by the tool is completed; when moving to the last cutting point, the tool vibration assembly moves upward to a standby position where the cutting sheet material is completely not contacted, and then stops vibrating the special-shaped tool, the tool protection sleeve moves upward to the standby position to make the tool protection sleeve away from the cutting high viscoelastic sheet material; in this process, the tool protection sleeve can prevent the cutting sheet material from being adhered to the tool and leaving the automatic cutting machine cutting bed, and can also scrape the adhered material scraps on the tool clean; the adhered material scraps scraped when the tool protection sleeve is lifted can be removed from the air hole;

[0010] If the tool needs to be replaced, the cutting of other patterns is performed after the tool is replaced, and the cutting of all patterns is completed.

[0011] In step one, the generation of the file compatible with the cutting machine software by the two-dimensional drawing software is implemented as follows: according to the shape of the high viscoelastic sheet material to be cut, a two-dimensional graph is drawn, the two-dimensional graph is divided into three layers: 1) the graph line of the pattern requiring customized tool cutting for the size of the nail hole or window smaller than 20 mm is set as layer A; 2) the material sheet surface marker line is set as layer B; and other graph lines using general tools for cutting are set as layer C; after drawing, the each layer The continuous line segments are integrated to prevent frequent lifting of the tool during cutting; the drawn graph is converted into a DXF file format to prevent garbled code of the imported file; each layer corresponds to a tool during cutting; after the cutting of one layer is completed, the tool is replaced to cut the pattern of another layer; until all layers are cut.

[0012] When the diameter of the nail hole or window is smaller than 20 mm, and the thickness of the high viscoelastic sheet material is between 2-6 mm, the special-shaped tool for cutting the pattern of the small-thickness high viscoelastic sheet material is installed on the pneumatic vibration chuck; the driving air pressure is set to 0.2-0.4 MPa.

[0013] When the diameter of the cutting pinhole or window is less than 20mm, and the thickness of the high-viscous-elastic sheet material is greater than 6mm, a special-shaped cutter for cutting the pattern line of the high-viscous-elastic sheet material of large thickness is needed to be installed on the pneumatic vibration chuck; the driving air pressure is set to 0.4-0.6MPa; so as to ensure that the cutter itself has strength and rigidity, and the cutter tip has an oscillation amplitude less than ±0.02mm during the cutting process of the small-diameter rotary cutter.

[0014] In step two, according to the thickness of the sheet and the cutting curvature, a pneumatic vibration cutter is selected, a special-shaped cutter is matched, and relevant processing parameters are set, including: the depth of cutter falling 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 integer is rounded to 0.01, and the eccentric size is offset by 1-3mm to the outside according to the parameters; compared with the calculation method of the depth of cutter falling in the general cutting method, E 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, and according to the shrinkage characteristics of the cut viscous-elastic material, the eccentric size is increased by 1-3mm to the outside.

[0015] The cylindrical cutter protection sleeve 9 used in the high-precision cutting method of the high-viscous-elastic resin patch based on the automatic cutting machine, characterized in that the cylindrical cutter protection sleeve 9 is a cylinder, the cylindrical cutter protection sleeve 9 includes a tubular sleeve body 92 and a circular end face 91 of a cutter extension end, a narrow cutter extension hole 911 is arranged in the middle of the circular end face 91, the cutter extension hole 911 is matched with a cutter gap, the circular end face 91 is further provided with a ventilation hole 912, the ventilation hole 912 is arranged at a distance from the cutter extension hole 911; a guide angle 913 is arranged at the outer edge of the circular end face 91; the cylindrical cutter protection sleeve 9 can prevent the material sheet from being lifted up during the up-down reciprocating cutting process, scrape the adhered material ends on the cutter, and drop the scraped material ends from the ventilation holes around, so as to avoid affecting the cutting quality.

[0016] The special-shaped cutter 3 for small-thickness high-viscous-elastic sheet material used in the high-precision cutting method of the high-viscous-elastic resin patch based on the automatic cutting machine, characterized in that the included angle between the special-shaped cutter blade 31 and the special-shaped cutter back 32 of the small-thickness high-viscous-elastic sheet material is 10°-12°.

[0017] The special-shaped cutter 09 for large-thickness high-viscous-elastic sheet material used in the high-precision cutting method of the high-viscous-elastic resin patch based on the automatic cutting machine is characterized in that when the cutter back 091 of the special-shaped cutter for large-thickness high-viscous-elastic sheet material is perpendicular to the horizontal plane, the included angle between the main cutting edge 092 of the special-shaped cutter for large-thickness high-viscous-elastic sheet material and the horizontal plane is 80°-88°, and the included angle between the cutting edge 093 at the cutter tip of the special-shaped cutter for large-thickness high-viscous-elastic sheet material and the horizontal plane is 66°-73°; and the upper end of the main cutting edge 092 has a circular-arc edge 095 which is integrated with the horizontal cutting edge 094.

[0018] The method fully considers all key links of the cutting of the high-viscous-elastic resin patch, and can cut the resin patch by using the automatic high-frequency vibration cutting machine, so that the size is accurate and the quality is reliable, and problems such as uneven cutting section quality, low size accuracy, low cutting efficiency, great deformation of the patch in the non-cutting area, cutting debris pollution of the patch and the like in the existing cutting process are solved, high-precision and automatic production of the high-viscous-elastic resin patch cutting is realized, the cutting efficiency of the resin patch is improved, and the batch production demand is met. BRIEF DESCRIPTION OF DRAWINGS

[0019] Figure 1 The planar expansion schematic diagram of the antenna heat-proof material of the present application;

[0020] Figure 2 The Z03 shape schematic diagram of the present application;

[0021] Figure 3 The Z03 cutter parameter schematic diagram of the present application;

[0022] Figure 4 The planar expansion schematic diagram of the certain special-shaped structural member heat-proof material of the present application;

[0023] Figure 5 The L09 shape schematic diagram of the present application;

[0024] Figure 6 The L09 cutter parameter schematic diagram of the present application;

[0025] Figure 7 The certain antenna heat-proof material patch schematic diagram of the present application;

[0026] Figure 8 The certain special-shaped structural member heat-proof patch schematic diagram of the present application;

[0027] Figure 9 The cutter protection sleeve schematic diagram of the present application;

[0028] Figure 10The schematic diagram of the special-shaped cutter for the small-thickness high-viscoelastic sheet material of the present application.

[0029] Figure 11 The schematic diagram of the special-shaped cutter for the large-thickness high-viscoelastic sheet material of the present application. DETAILED DESCRIPTION

[0030] A high-precision cutting method for high-viscoelastic resin patches based on an automatic cutting machine, specifically comprising the following steps:

[0031] 1) Generate a file compatible with the cutting machine software through a two-dimensional drawing software such as AutoCAD:

[0032] According to the shape to be cut of the high-viscoelastic sheet material, draw a two-dimensional graph, and set the graph lines of the hole or window size less than 20mm requiring customized cutter cutting as layer A, the surface marker line as layer B, and the other graph lines using general cutters as layer C. After drawing, integrate the continuous line segments to prevent frequent lifting of the cutter during cutting. Compared with the general cutting method of setting only one layer and one cutter for cutting at a time, the present application realizes the differentiation of geometric line segment characteristics according to the above method, and simultaneously performs cutter changing and cutting, which can effectively improve the cutting effect and cutting rate of the present viscoelastic material. Convert the drawn graph into a DXF file format, and the file version is recommended to be no more than DXF 2004 / LT2004 to prevent graph garbled code after importing the file;

[0033] 2) Select a pneumatic vibration cutter according to the sheet thickness and cutting curvature, cooperate with a special-shaped cutter, and set relevant processing parameters, including: cutter falling depth, movement speed, eccentric size, etc.:

[0034] When the sheet thickness is 2-6mm, install the customized cutter Z03 on the pneumatic vibration chuck, and set the driving air pressure to 0.2-0.4MPa; when the sheet thickness is 7-12mm, install the customized cutter L09 on the pneumatic vibration chuck, and set the driving air pressure to 0.4-0.6MPa; ensure that the cutter itself has sufficient strength and rigidity to smoothly cut through the material during small-diameter rotary cutting, so that the cutter tip oscillation amplitude is less than ±0.02mm, and the cutting precision and cutter service life are improved; considering that the cutting resistance, single cutting width, and offset distance of the cutting tip from the rotary midpoint of different cutters are different, the cutter falling depth, movement speed, and eccentric size need to be set according to the selected cutter, wherein the cutter falling depth is calculated as follows: L 料片厚度 *0.1+L 台面落差 +E 刀具补偿系数 , and the movement speed is calculated as follows: 10 / L 料片厚度After rounding off the number to 0.01, according to the shrinkage characteristics of the viscoelastic material after cutting, the eccentric size is offset to the outside by 1-3 mm according to the requirement;

[0035] 3) The cutting tool needs to be installed with a customized protective sleeve; ensure that the material sheet is prevented from being lifted during the up-down reciprocating cutting process, and at the same time, the adhered material ends adhered to the cutting tool are scraped off to avoid affecting the cutting quality;

[0036] 4) The sheet-shaped material to be cut is wrapped with release paper for front and back wrapping, and is placed on the automatic cutting machine cutting bed for fixation by negative pressure blower to prevent the material sheet from moving during cutting;

[0037] 5) Start the cutting machine, prepare for tool setting, selection of starting cutting point, etc., and after confirming that the cutting area is correct, start cutting the sheet-shaped material to obtain the required high-precision resin patch.

[0038] 6) Put the cut material sheet into the refrigerator for standby, and recycle the remaining edge corner waste material;

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

[0040] Among them, the high-viscoelastic sheet-shaped material is covered with a film on the upper and lower surfaces, which can be a release film, release paper, Teflon cloth, release cloth, etc., any one of them, to provide certain film support for the cutting material of this example, while considering the economy and material contact compatibility, the release paper is preferred.

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

[0042] Among them, the cutting machine setting parameters in step 2) are only reference values for the method of the present application.

[0043] Among them, the protective sleeve in step 3) is a full-wrap structure, with a gap of 0.2 mm wider than the width of the cutting tool left in the middle below the cutting tool, the cutting tool is driven by compressed air, the driving air pressure is adjusted by the characteristics of the cutting material, and the up-down high-frequency reciprocating motion passes through the gap. When the adherend on the cutting tool is greater than the gap width, the adherend will be scraped off at the same time.

[0044] The application will be further illustrated by the following examples.

[0045] Example 1: Automatic cutting of high-viscoelastic resin patch with large-curvature circular hole pattern

[0046] The cutting pattern 1 shown in this embodiment contains 4 circular holes with a diameter of 4 mm, a middle rectangle, and a rounded rectangle with a radius of R3. The required resin patch thickness is 4.5 mm. In this embodiment, the circular holes and rounded corners in the cutting pattern 1 are set as layer A, the surface marker line is set as layer B, and other lines are set as layer C. A DXF format file is generated by conversion and imported into the cutting machine. A pneumatic vibrating knife is selected. If the pattern contains large curvature arcs with a diameter less than 5 mm, a custom knife with the following parameters is selected: Figure 2 Figure 3 A custom protective sleeve 9 is installed on the outer periphery of the knife. The cutting machine parameters are set as follows: depth of cut 74.8 mm, movement speed 0.02 m / s, and eccentric size 3 mm. The 4.5 mm resin patch with release paper is placed on the cutting bed, the tool is aligned, the cutting starting point is selected, and the program is started to complete the resin patch cutting. The resin patch 7 obtained by cutting has a neat edge, a size error of ±0.5 mm, and a cutting time of 34 s.

[0047] Example 2: Automatic cutting of large thickness and high viscoelasticity resin patch

[0048] The cutting pattern 4 shown in this embodiment has a resin patch thickness of 8 mm and contains several circular holes with a diameter ranging from 6 to 40 mm. In this embodiment, the circular holes and rounded corners in the cutting pattern 4 are set as layer A, the surface marker line is set as layer B, and other lines are set as layer C. A DXF format file is generated by conversion and imported into the cutting machine. A pneumatic vibrating knife is selected. If the pattern contains large curvature arcs with a diameter less than 5 mm, a custom knife with the following parameters is selected: Figure 4 A custom protective sleeve 9 is installed on the outer periphery of the knife. The cutting machine parameters are set as follows: depth of cut 74.5 mm, movement speed 0.01 m / s, and eccentric size 1 mm. The 8 mm resin patch with release paper is placed on the cutting bed, the tool is aligned, the cutting starting point is selected, and the program is started to complete the resin patch cutting. The resin patch 8 obtained by cutting has a neat edge, a size error of ±1 mm, and a cutting time of 1 min 42 s.

[0049] Example:

[0050] Example 3: A high-precision cutting method for high viscoelasticity resin patches based on an automatic cutting machine, characterized by the following steps:

[0051] (1) Generate a file compatible with the cutting machine software by using a two-dimensional drawing software, and import the file into the cutting machine.

[0052] (2) Select a pneumatic vibrating knife and a special-shaped knife according to the thickness of the sheet and the cutting curvature, and set the relevant processing parameters, including: depth of cut, movement speed, eccentric size, etc.

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

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

[0055] (5) Start the cutting machine, prepare for tool setting, select the starting cutting point, etc., and start cutting the sheet material to obtain the required high-precision resin patch.

[0056] An automatic high-frequency vibration cutting machine is used to cut a high-viscoelastic sheet material with a thickness of 2-12 mm.

[0057] At the same time, the pattern lines that need to be cut by customizing the tool for nail holes or windows with a size less than 20 mm are set as layer A, the surface marker lines of the sheet are set as layer B, and other pattern lines that are cut by general tools are set as layer C. After drawing, the continuous line segments are integrated to prevent frequent tool lifting during cutting. Compared with the general cutting method of setting only one layer and one tool for cutting at a time, the present application realizes the differentiation of geometric line segment features according to the above method, and each layer corresponds to one tool, which can effectively improve the cutting effect and cutting rate of the viscoelastic material.

[0058] According to the thickness of the sheet and the cutting curvature, select the pneumatic vibration knife, cooperate with the special-shaped tool, set the cutting layer rules, select the surface film material, and set the related processing parameters, including: the depth of the tool 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 integer is rounded to 0.01, and the eccentric size is offset by 1-3 mm to the outside according to the required parameters. Compared with the calculation method of the depth of the tool in the general cutting method, E 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, and according to the shrinkage characteristics of the viscoelastic material after cutting, the eccentric size is increased by 1-3 mm to the outside, which can effectively improve the cutting effect of the viscoelastic material.

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

[0060] A custom-designed protective sleeve 9 is installed around the cutting blade. Compared with ordinary cutting protective sleeves, it can ensure that the material is not lifted up during the up-and-down reciprocating cutting process. At the same time, it scrapes off the material residue adhering to the blade and drops the scraped material residue out through the round holes around the blade to avoid affecting the cutting quality.

[0061] Example 4:

[0062] The cutting pattern in this embodiment is as follows: Figure 1 As shown, the cut pattern contains four circular nail holes with a diameter of 4mm, and a rectangle in the middle with rounded corners of R3. The required resin patch thickness is 4.5mm. In this embodiment, the circular nail holes and rounded corners of cut pattern 1 are set as layer A, the marking lines on the material surface are set as layer B, and other lines are set as layer C. A DXF format file is generated and imported into the cutting machine. A pneumatic vibrating knife is selected. The pattern contains large curvature arcs with a diameter less than 5mm, requiring the use of... Figure 2 Custom-made cutting tools, with the following tool shape parameters: Figure 3 A custom protective sleeve (9) is installed around the blade. The cutting machine parameters are set as follows: blade depth 74.8mm, movement speed 0.02m / s, and eccentricity 3mm.

[0063] Example 5:

[0064] The cutting pattern in this embodiment is as follows: Figure 4 As shown, the resin patch is 8mm thick, and the graphic contains several circles with diameters ranging from 6 to 40mm. In this embodiment, the circular nail holes and rounded corners in the cutting graphic 4 are set as layer A, the marking lines on the material surface are set as layer B, and other lines are set as layer C. A DXF format file is generated and imported into the cutting machine. A pneumatic vibrating knife is selected, the resin patch thickness is 8mm, a custom-made knife 5 is selected, the knife shape parameters are 6, and a custom-made protective sleeve 9 is installed around the knife. The cutting machine parameters are set as follows: blade depth 74.5mm, movement speed 0.01m / s, and eccentricity 1mm.

[0065] The technical innovation of the high-precision cutting method for high-viscoelastic resin patches based on an automated cutting machine has many advantages for technicians in the same industry. The high-viscoelastic resin patches obtained by the method have neat edges, high size precision, and high cutting efficiency, can meet the batch production demand, and better promote the application of automated cutting technology in the field of composite material cutting and the like.

Claims

1. A high- viscoelastic resin patch and a high-precision cutting method based on an automated cutting machine, characterized by, It comprises the following steps: Step one, generate a file compatible with the cutting machine software through two-dimensional drawing software, import the file into the cutting machine; two-dimensional drawing is to draw different features of the graph according to the use of the tool layer, that is, the graph using a tool is placed in a layer; then combine multiple layers of drawing; the continuous line segment is integrated to prevent frequent lifting of the cutting process; Step two, select the pneumatic vibration knife and the special-shaped tool according to the thickness and cutting curvature of the sheet, set the relevant processing parameters, including: the depth of the falling knife, the movement speed and the eccentric size parameters; use the pneumatic vibration knife to cut straight lines and large diameter arcs; when the diameter of the pin hole or window is less than 20mm, a special-shaped tool is needed to cut the pattern line; Step three, install a cylindrical tool protection sleeve on the cutting tool; the cylindrical tool protection sleeve is cylindrical, the cylindrical tool protection sleeve includes a tubular sleeve body and a circular end face of the tool extension end, a narrow tool extension hole is arranged in the middle of the circular end face, the tool extension hole is matched with the tool gap, and a ventilation hole is further arranged on the circular end face, the ventilation hole is arranged at a distance from the tool extension hole; a guide angle is arranged on the outer edge of the circular end face; the cylindrical tool protection sleeve can prevent the material sheet from being lifted in the process of up-down reciprocating cutting, scrape off the adhered material ends adhered to the tool, and drop the scraped material ends from the ventilation holes around, so as to avoid affecting the cutting quality; Step four, cover the high-viscoelastic sheet material to be cut with surface film on the upper and lower surfaces, and adsorb it on the automatic cutting machine cutting bed through a negative pressure blower; Step five, start the cutting machine, prepare for tool setting and selection of starting cutting point, and start cutting the high-viscoelastic sheet material; after the cutting starts, the tool protection sleeve moves downward to a position close to the cutting sheet material, stops the movement of the tool protection sleeve, the special-shaped tool installed on the tool vibration assembly is in an upright state and starts high-frequency vibration within a range of 5mm upward and downward, the tool vibration assembly moves downward to the position where the cutting sheet material is completely cut off, and then starts to move along the program specified track to cut the sheet material; until the special-shaped tool cuts all the patterns; when moving to the last cutting point, the tool vibration assembly moves upward to a standby position where the cutting sheet material is completely not contacted, stops vibrating the special-shaped tool, and the tool protection sleeve moves upward to the standby position, so that the tool protection sleeve is away from the cutting high-viscoelastic sheet material; in this process, the tool protection sleeve can prevent the cutting sheet material from being adhered to the tool and leaving the automatic cutting machine cutting bed, and can also scrape off the adhered material scraps on the tool completely; the adhered material scraps scraped off when the tool protection sleeve is lifted can be discharged from the ventilation hole; If the tool needs to be replaced, replace the tool and then cut other patterns until all the patterns are cut.

2. The high viscous-elastic resin patch and high-precision cutting method based on an automated cutting machine according to claim 1, characterized by, In step one, the generation of the cutting machine software compatible file by two-dimensional drawing software is implemented as follows: a two-dimensional graph is drawn according to the shape to be cut of the high-viscosity elastic sheet material, the two-dimensional graph is divided into three layers: 1) the graph line of which the size of the pinhole or window is less than 20 mm and which needs to be cut by a customized cutter is set as layer A; 2) the line of the surface marker of the sheet material is set as layer B; and other graph lines which are cut by a general cutter are set as layer C; after drawing, the continuous line segments are integrally merged to prevent frequent lifting of the cutter during cutting. Each layer The continuous line segments are integrally merged to prevent frequent lifting of the cutter during cutting. Convert the drawn graph into DXF file format to prevent garbled code after importing the file; in the cutting process, each layer corresponds to a tool; after cutting a layer, change the tool to cut the pattern of another layer; until all layers are cut.

3. The high-viscoelastic resin patch and high-precision cutting method based on an automatic cutting machine according to claim 1, characterized in that, When the diameter of the cutting hole or window is less than 20 mm, and the thickness of the high-viscous-elastic sheet material is between 2-6 mm, a special-shaped cutter for small-thickness high-viscous-elastic sheet material is needed to be installed on the pneumatic vibration chuck for cutting the pattern line; the driving air pressure is set to 0.2-0.4 MPa; When the diameter of the cutting hole or window is less than 20 mm, and the thickness of the high-viscous-elastic sheet material is greater than 6 mm, a special-shaped cutter for large-thickness high-viscous-elastic sheet material is needed to be installed on the pneumatic vibration chuck for cutting the pattern line; the driving air pressure is set to 0.4-0.6 MPa; to ensure the smooth cutting through the material in the process of cutting small-diameter rotary cutting, and to ensure the strength and rigidity of the cutter itself, so that the amplitude of the cutter tip is less than ±0.02 mm.

4. The high viscous-elastic resin patch and high-precision cutting method based on an automated cutting machine according to claim 1, characterized by, The step two, according to the sheet thickness and cutting curvature, select the pneumatic vibration knife, cooperate with the special-shaped tool, set the relevant processing parameters, including: the drop 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 number is rounded to 0.01, the eccentric size is offset to the outside by 1-3mm according to the parameters, the calculation method of the drop knife depth is increased E 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 eccentric size is offset to the outside by 1-3mm.

5. The high viscous-elastic resin patch and high-precision cutting method based on an automated cutting machine according to claim 3, characterized by, The angle between the back of the special-shaped cutter for small-thickness high-viscous-elastic sheet material and the blade of the special-shaped cutter for small-thickness high-viscous-elastic sheet material is 10°-12°.

6. The high viscous-elastic resin patch and high-precision cutting method based on an automated cutting machine according to claim 3, characterized by, When the back of the special-shaped cutter for large-thickness high-viscous-elastic sheet material is perpendicular to the horizontal plane, the angle between the main blade of the special-shaped cutter for large-thickness high-viscous-elastic sheet material and the horizontal plane is 80°-88°, the angle between the blade at the tip of the special-shaped cutter for large-thickness high-viscous-elastic sheet material and the horizontal plane is 66°-73°; and the upper end of the main blade has a circular arc blade, which is integrated with the horizontal blade.

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