introduction
TRIZ is an ex-Soviet naval expert Genrich S., who is known as the father of TRIZ. Created by Altshuller. Its purpose is to study the scientific principles, methods, and laws followed by humans in the process of invention and creation and solving technical problems. With this in mind, people can actively carry out product development and design and predict future trends.
The main task of product innovation is to constantly resolve the contradiction between outdated products and market demand. The reason why a product can't meet the market demand is because it has internal contradictions that prevent replacement. In the TRIZ theory, this kind of contradiction is called technical contradiction. The so-called technical contradiction refers to the use of known principles and methods to improve a certain part or parameter of the system. Inevitably, other parts or parameters of the system will become worse. For example: quality and strength, speed of the car and fuel consumption and so on. The principle provided by the technical conflict resolution matrix often does not directly solve the problem but provides the most likely solution to the problem. When solving the problem, it is also necessary to propose specific methods for solving the problem based on the provided principles and the specific conditions for solving the problem.
1 TechOptimizer Technology Innovation Software
TechOptimizer software is a computer-aided innovation software that uses TRIZ as a theoretical basis, combines creative design methods, assists engineering technicians, researchers, and business operators in product improvement, new product development, and breakthrough innovations. It can help technical personnel in different engineering fields to correctly identify and quickly resolve key issues in product development according to market demand in the conceptual design phase of products, and propose feasible and innovative design solutions with high quality and efficiency to guide the design in the right direction. . The software was developed by the United States Invention Machine Company and is an innovative tool based on knowledge.
TechOptimizer software consists of functional modules such as product analysis, process analysis, feature transfer, scientific principle retrieval, innovation principle, prediction, and network assistant. Its main features are: According to the needs of users, it can quickly discover existing problems in existing products or processes, and provide high-quality solutions; Help designers solve technical conflicts and avoid compromise designs; Accelerate new product and process development process; Cost analysis in the conceptual design phase effectively reduces product costs; expands the user's knowledge area; intelligent wizards provide operational hints at any time, making software use easier; and automatically generating analysis reports.
2 Innovative design of floating spindle for glass processing machine
2.1 Common Glass Processing Methods and Problems
Flat glass edging, glass edges are processed into a certain shape, such as straight edges, round edges or C-shaped edges, etc., usually using a production line can be completed in a one-time operation. The coarse grinding, semi-finishing, fine grinding, polishing and the like of the glass are continuously performed by diamond grinding wheels mounted on as many as six stations. For decorative grinding of glass craftworks and crystal glass, decorative processing is often done manually or on a multi-axis automatic grinder. The coarse grinding of optical lenses generally uses a cup-shaped grinding wheel with a rounded edge on a special grinding machine.
At present, since the spindle of the machine tool is processing glass, the self-adjustment of the external force of the cutter cannot be quickly performed by itself, and the glass product and the cutter are easily broken.
2.2 Application of technical contradictions to solve the matrix proposed innovative solutions
When grinding glass, the spindle of the grinding wheel must rotate at a high speed. However, because glass irregularities can cause changes in the pressure applied to the grinding wheel, and the glass is a brittle material, it is easily broken due to improper force, which requires the spindle to be quickly adjusted as the pressure changes, ie, it must rotate at high speed and must It is self-adaptive, and can give way to self-relief when the force becomes large.
The technical contradiction resolution matrix is ​​now applied to resolve this contradiction and a corresponding solution is proposed.
Select item 9 "Speed" in the column of improved technical characteristics in Table 1, and select item 14 "Intensity" in the column of deteriorating technical characteristics. It can be seen that in order to resolve this contradiction, TRIZ offers four solutions, which are numbered 8, 3, 26, and 14, respectively. By comparing these principles, the principle 14 "rotation, ellipticity" is selected, that is, the linear motion is changed to rotary motion, the cube is changed into an ellipsoidal body, and rollers and spherical or spiral objects are used. By filtering, select the example CONTACT OVER A SPHERICAL SUFACE. As a result, point contact can be considered as a substitute for surface contact of an object. Obviously, this alternative can greatly reduce the friction between the contacting objects.
Based on the principles 15 and 14 and related examples given by the software (TechOptimizer), a preliminary solution can be presented as follows: First, the functions to be realized by the main shaft are divided into high-speed rotation functions and spindle rotation functions. For the high-speed rotation of the spindle, a high-speed motor can be used, and the spindle's up-and-down floating function is solved with “air flotationâ€.
Taking into account the special requirements of the spindle, the friction between the bearing and the bearing should be very small. Gas-lubricated bearings are chosen here. Gas-lubricated bearings often use air as a lubricant, so they are also called air bearings. The air bearing has the advantages of no contact, low friction, low temperature rise, long life, high speed adaptability, and no pollution to the host and the environment.
Based on the above analysis and selection of bearings, as well as the conception and refinement of the solutions, proposal 1 (shown in Figure 1) can be proposed: The main shaft 3 is supported by the air bearing 4, and the required torque is provided by the single-phase series motor 8. However, it is transmitted through a transmission frame, and the ball 6 forms a point contact between the spindle and the transmission frame. Before the grinding wheel performs cutting, the spindle is pushed distally by the gas discharged from the cylinder. During machining, the spindle will move up and down as the cutting force changes.
3 Conclusion
This paper discusses the integration of the TRIZ theory and the computer-aided innovation approach. Through the process of seeking two innovative solutions for floating spindles of glass processing machines, the TRIZ technology conflict resolution matrix and Tech Optimizer technology innovation software are applied to solve the product innovation process. Technical difficulties, the method of mechanical product innovation program design. It shows that the application of TRIZ theory and TechOptimizer technology innovation software can indeed effectively solve technical problems in technological innovation and product innovation.
TRIZ is an ex-Soviet naval expert Genrich S., who is known as the father of TRIZ. Created by Altshuller. Its purpose is to study the scientific principles, methods, and laws followed by humans in the process of invention and creation and solving technical problems. With this in mind, people can actively carry out product development and design and predict future trends.
The main task of product innovation is to constantly resolve the contradiction between outdated products and market demand. The reason why a product can't meet the market demand is because it has internal contradictions that prevent replacement. In the TRIZ theory, this kind of contradiction is called technical contradiction. The so-called technical contradiction refers to the use of known principles and methods to improve a certain part or parameter of the system. Inevitably, other parts or parameters of the system will become worse. For example: quality and strength, speed of the car and fuel consumption and so on. The principle provided by the technical conflict resolution matrix often does not directly solve the problem but provides the most likely solution to the problem. When solving the problem, it is also necessary to propose specific methods for solving the problem based on the provided principles and the specific conditions for solving the problem.
1 TechOptimizer Technology Innovation Software
TechOptimizer software is a computer-aided innovation software that uses TRIZ as a theoretical basis, combines creative design methods, assists engineering technicians, researchers, and business operators in product improvement, new product development, and breakthrough innovations. It can help technical personnel in different engineering fields to correctly identify and quickly resolve key issues in product development according to market demand in the conceptual design phase of products, and propose feasible and innovative design solutions with high quality and efficiency to guide the design in the right direction. . The software was developed by the United States Invention Machine Company and is an innovative tool based on knowledge.
TechOptimizer software consists of functional modules such as product analysis, process analysis, feature transfer, scientific principle retrieval, innovation principle, prediction, and network assistant. Its main features are: According to the needs of users, it can quickly discover existing problems in existing products or processes, and provide high-quality solutions; Help designers solve technical conflicts and avoid compromise designs; Accelerate new product and process development process; Cost analysis in the conceptual design phase effectively reduces product costs; expands the user's knowledge area; intelligent wizards provide operational hints at any time, making software use easier; and automatically generating analysis reports.
2 Innovative design of floating spindle for glass processing machine
2.1 Common Glass Processing Methods and Problems
Flat glass edging, glass edges are processed into a certain shape, such as straight edges, round edges or C-shaped edges, etc., usually using a production line can be completed in a one-time operation. The coarse grinding, semi-finishing, fine grinding, polishing and the like of the glass are continuously performed by diamond grinding wheels mounted on as many as six stations. For decorative grinding of glass craftworks and crystal glass, decorative processing is often done manually or on a multi-axis automatic grinder. The coarse grinding of optical lenses generally uses a cup-shaped grinding wheel with a rounded edge on a special grinding machine.
At present, since the spindle of the machine tool is processing glass, the self-adjustment of the external force of the cutter cannot be quickly performed by itself, and the glass product and the cutter are easily broken.
2.2 Application of technical contradictions to solve the matrix proposed innovative solutions
When grinding glass, the spindle of the grinding wheel must rotate at a high speed. However, because glass irregularities can cause changes in the pressure applied to the grinding wheel, and the glass is a brittle material, it is easily broken due to improper force, which requires the spindle to be quickly adjusted as the pressure changes, ie, it must rotate at high speed and must It is self-adaptive, and can give way to self-relief when the force becomes large.
The technical contradiction resolution matrix is ​​now applied to resolve this contradiction and a corresponding solution is proposed.
Select item 9 "Speed" in the column of improved technical characteristics in Table 1, and select item 14 "Intensity" in the column of deteriorating technical characteristics. It can be seen that in order to resolve this contradiction, TRIZ offers four solutions, which are numbered 8, 3, 26, and 14, respectively. By comparing these principles, the principle 14 "rotation, ellipticity" is selected, that is, the linear motion is changed to rotary motion, the cube is changed into an ellipsoidal body, and rollers and spherical or spiral objects are used. By filtering, select the example CONTACT OVER A SPHERICAL SUFACE. As a result, point contact can be considered as a substitute for surface contact of an object. Obviously, this alternative can greatly reduce the friction between the contacting objects.
Based on the principles 15 and 14 and related examples given by the software (TechOptimizer), a preliminary solution can be presented as follows: First, the functions to be realized by the main shaft are divided into high-speed rotation functions and spindle rotation functions. For the high-speed rotation of the spindle, a high-speed motor can be used, and the spindle's up-and-down floating function is solved with “air flotationâ€.
Taking into account the special requirements of the spindle, the friction between the bearing and the bearing should be very small. Gas-lubricated bearings are chosen here. Gas-lubricated bearings often use air as a lubricant, so they are also called air bearings. The air bearing has the advantages of no contact, low friction, low temperature rise, long life, high speed adaptability, and no pollution to the host and the environment.
Based on the above analysis and selection of bearings, as well as the conception and refinement of the solutions, proposal 1 (shown in Figure 1) can be proposed: The main shaft 3 is supported by the air bearing 4, and the required torque is provided by the single-phase series motor 8. However, it is transmitted through a transmission frame, and the ball 6 forms a point contact between the spindle and the transmission frame. Before the grinding wheel performs cutting, the spindle is pushed distally by the gas discharged from the cylinder. During machining, the spindle will move up and down as the cutting force changes.
Figure 1 Innovation Scheme 1
1 wheel; 2 cylinder head; 3 spindle; 4 air bearing; 5 travel stop; 6 ball; 7 coupling; 8 motor
Figure 2 Innovation Scheme 2
1 wheel; 2 spindles; 3 bearings; 4 stator windings; 5 rotors; 6 cylinder heads
3 Conclusion
This paper discusses the integration of the TRIZ theory and the computer-aided innovation approach. Through the process of seeking two innovative solutions for floating spindles of glass processing machines, the TRIZ technology conflict resolution matrix and Tech Optimizer technology innovation software are applied to solve the product innovation process. Technical difficulties, the method of mechanical product innovation program design. It shows that the application of TRIZ theory and TechOptimizer technology innovation software can indeed effectively solve technical problems in technological innovation and product innovation.
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