A method for calculating the arrangement of tool wheels of a composite part forming tool

Abstract

The application discloses a kind of composite parts forming tool trolley arrangement calculation methods.The method is based on the number of composite parts forming tool frame partition arrangement, utilize the mean of minimum partition number and maximum partition number of trolley arrangement to carry out pre-arrangement calculation, and through the remaining partition number after pre-arrangement, the number of trolley arrangement and trolley arrangement spacing partition number are adjusted and calculated.A kind of composite parts forming tool trolley arrangement calculation method, utilize formula calculation and judgment to realize the high-quality arrangement of composite parts forming tool trolley, solve the technical problems such as design diversification, non-standard, non-uniform, poor traceability, low design efficiency, realize standardized rapid design, effectively improve design efficiency.

Description

Technical Field

[0001] This invention belongs to the field of digital manufacturing and relates to a method for calculating the number of casters and the number of partitions between casters in a composite parts forming fixture. Background Technology

[0002] Composite material molding typically involves multiple processes, including manual application, bag making, vacuuming, and autoclave forming. The molding fixtures for composite materials need to be moved between cleanrooms, autoclaves, and testing areas. Therefore, to facilitate the transportation and handling of large and medium-sized composite parts molding fixtures and composite parts themselves, casters need to be arranged in groups along the length of the molding fixture frame on both sides. These casters are small in size and highly flexible, allowing for free movement and rotation of the fixture at multiple angles, facilitating rapid movement of large and medium-sized composite parts molding fixtures. Casters equipped with brakes also enable quick positioning of the fixtures, making them an essential component of large and medium-sized composite parts molding fixtures.

[0003] Considering the load-bearing impact, the casters of composite part forming fixtures are generally located on the frame partitions of the fixture. Traditionally, the caster arrangement for composite part forming fixtures is determined by the fixture designer based on process experience. Since the caster arrangement directly affects the stability of the fixture and the product quality during parts transportation and turnover, as well as the manufacturing and processing cycle, processing cost, and weight reduction of the fixture, the caster arrangement is a crucial aspect of fixture design. Existing diverse design methods cannot guarantee consistency between design and product, severely impacting design efficiency, resulting in inconsistent design structures, non-standard designs, and difficulty in ensuring design quality. Furthermore, this design model hinders multi-person collaboration, increases the difficulty of technical cooperation between teams, impedes efficient parallel design by multiple people, prolongs the design cycle, and increases design and manufacturing costs. Non-standard and inconsistent designs not only affect design quality, but also directly impact the processing efficiency and quality of tooling, and indirectly affect the manufacturing quality and production efficiency of composite parts. Summary of the Invention

[0004] To address the aforementioned issues, this invention proposes a method for calculating the arrangement of casters in composite part forming fixtures. This method utilizes mathematical formulas to standardize, efficiently design the number of casters and the number of spacing partitions in the arrangement, thereby achieving a standardized and explicit expression of the knowledge and formulas related to the design of casters in composite part forming fixtures.

[0005] The specific steps of the technical solution adopted in this invention are as follows:

[0006] 1. Calculate the number of frame partitions Cn in the length direction of the forming tooling for composite parts;

[0007] 2. Based on the number of frame partitions Cn along the length direction of the composite part forming fixture, determine the minimum spacing partition number Smin and the maximum spacing partition number Smax of the caster arrangement for the composite part forming fixture:

[0008] Smin>0, Smax≤Cn;

[0009] 3. Determine the number of suspended partitions at both ends of the composite part forming fixture Cb based on the maximum spacing partition number Smax, where 0<Cb≤Smax;

[0010] 4. Calculate the number Na of casters pre-arranged for composite part forming tooling. The calculation formula is as follows:

[0011] Na=[(Cn-Cb)*2 / (Smin+Smax)]+1

[0012] 5. Calculate the remaining number of partitions Cr after the pre-arrangement of casters in the composite part forming fixture. The calculation formula is as follows:

[0013] Cr=Cn-Cb-(Na-1)*(Smin+Smax) / 2

[0014] 6. Compare the remaining number of partitions Cr and the pre-arranged number Na after pre-arrangement. Based on the comparison results, calculate the spacing between the casters, the number of partitions S, and the number of casters N for the composite part forming tooling. The specific operation is as follows:

[0015] (6-1) Compare the remaining number of partitions Cr and the pre-arranged number Na after the pre-arrangement. When Cr < Na, the number of composite part forming tooling casters N = Na; where the number of partitions between the Cr composite part forming tooling casters is S = (Smin + Smax) / 2 + 1, and the number of partitions between the remaining N - Cr composite part forming tooling casters is S = (Smin + Smax) / 2.

[0016] (6-2) Compare the number of remaining partitions Cr after pre-arrangement with the number of pre-arranged partitions Na. When Cr≥Na, the number of composite part forming tooling casters N=Na+1; where the number of partitions between the casters of one composite part forming tooling is S=Cr, and the number of partitions between the casters of Na composite part forming tooling is S=(Smin+Smax) / 2.

[0017] The beneficial effects of this invention are as follows: It proposes a method for calculating the arrangement of casters in composite part forming fixtures. Based on the number of partitions in the frame of the composite part forming fixture, a pre-arrangement calculation is performed using the average of the minimum and maximum number of partitions in the caster arrangement. The remaining number of partitions after the pre-arrangement is then used to adjust the number of casters and the number of partitions between them. This method for calculating the arrangement of casters in composite part forming fixtures utilizes data formulas to quickly calculate the number of casters and their spacing, achieving rapid, high-quality, and standardized arrangement of casters. It solves technical problems such as diverse, non-standardized, and inconsistent designs, poor traceability, and low design efficiency. Meanwhile, a calculation method for the arrangement of casters in composite part forming fixtures effectively improves the design efficiency and quality of casters in composite part forming fixtures, ensures the stability of composite part forming fixtures and the product quality during parts turnover and transportation, realizes the formulaic and rapid design of casters in composite part forming fixtures, improves the manufacturing efficiency of composite part forming fixtures, and reduces the manufacturing cost of composite part forming fixtures. Attached Figure Description

[0018] Figure 1 Composite part forming tooling drawing

[0019] The numbers in the diagram are explained as follows: 1. Composite part forming fixture; 2. Frame partition along the length of the composite part forming fixture; 3. Casters of the composite part forming fixture. Detailed Implementation

[0020] Two embodiments of the present invention will be used for illustration.

[0021] Example 1:

[0022] according to Figure 1 A method for calculating the arrangement of casters 3 in a composite parts forming tooling includes the following steps:

[0023] 1. Calculate the number of frame partitions 2 in the length direction of the composite part forming tooling, Cn = 27;

[0024] 2. Based on the number Cn of the frame partitions 2 along the length direction of the composite part forming fixture, determine the minimum spacing partition number Smin and the maximum spacing partition number Smax of the casters 3 of the composite part forming fixture. In specific operation, Smin and Smax are assigned values ​​according to their ranges. In this embodiment, the specific assignment process is as follows:

[0025] Where Smin > 0, and in this example Smin is 2;

[0026] Smax≤Cn, that is, Smax≤27, and in this example, Smax is 6;

[0027] 3. Determine the number of suspended partitions at both ends of the composite part forming fixture 1 based on the maximum spacing partition number Smax, where 0<Cb≤Smax. In specific operation, assign a value to Cb according to the range of Cb, 0<Cb≤6, and in this example, Cb is taken as 4.

[0028] 4. Calculate the number Na of pre-arranged casters 3 for composite part forming tooling. The calculation formula is as follows:

[0029] Na=[(Cn-Cb)*2 / (Smin+Smax)]+1

[0030] Na=[(27-4)*2 / (2+6)]+1=6

[0031] 5. Calculate the number of remaining partitions Cr after the pre-arrangement of casters 3 in the composite part forming tooling. The calculation formula is as follows:

[0032] Cr=Cn-Cb-(Na-1)*(Smin+Smax) / 2

[0033] Cr=27-4-(6-1)*(2+6) / 2

[0034] Cr=3

[0035] 6. Compare the remaining number of partitions Cr and the pre-arranged number Na after pre-arrangement. Based on the comparison results, calculate the number of partitions S and the number of casters N for the 3-row arrangement of the composite part forming tooling casters. The specific operation is as follows:

[0036] (6-1) Compare the remaining number of partitions after pre-arrangement Cr=3 with the pre-arrangement number Na=6. When Cr<Na, the number of rows of casters for forming composite parts is N=Na=6; where Cr=3 is the number of partitions between rows of casters for forming composite parts, and the calculation formula is as follows:

[0037] S = (Smin + Smax) / 2 + 1

[0038] S = (2+6) / 2+1 = 5;

[0039] The remaining N-Cr=6-3=3 composite parts forming tooling casters with 3 rows of spacing partitions are calculated using the following formula:

[0040] S = (Smin + Smax) / 2

[0041] S = (2 + 6) / 2 = 4.

[0042] Example 2:

[0043] according to Figure 1 A method for calculating the arrangement of casters 3 in a composite parts forming tooling includes the following steps:

[0044] 1. Calculate the number of frame partitions 2 in the length direction of the composite part forming tooling, Cn = 11;

[0045] 2. Based on the number of partitions Cn in the frame 2 along the length direction of the composite part forming fixture, determine the minimum spacing partition number Smin and the maximum spacing partition number Smax of the caster 3 of the composite part forming fixture. In specific operation, Smin and Smax are assigned values ​​according to their ranges. In this embodiment, the specific assignment process is as follows:

[0046] Where Smin > 0, and in this example Smin is 2;

[0047] Smax≤Cn, that is, Smax≤11, and in this example, Smax is 6;

[0048] 3. Determine the number of suspended partitions at both ends of the composite part forming fixture 1 based on the maximum spacing partition number Smax, where 0<Cb≤Smax. In specific operation, assign a value to Cb according to the range of Cb, 0<Cb≤6, and in this example, Cb is taken as 4.

[0049] 4. Calculate the number Na of pre-arranged casters 3 for composite part forming tooling. The calculation formula is as follows:

[0050] Na=[(Cn-Cb)*2 / (Smin+Smax)]+1

[0051] Na=[(11-4)*2 / (2+6)]+1=2

[0052] 5. Calculate the number of remaining partitions Cr after the pre-arrangement of casters 3 in the composite part forming tooling. The calculation formula is as follows:

[0053] Cr=Cn-Cb-(Na-1)*(Smin+Smax) / 2

[0054] Cr=11-4-(2-1)*(2+6) / 2

[0055] Cr=3

[0056] 6. Compare the remaining number of partitions Cr and the pre-arranged number Na after pre-arrangement. Based on the comparison results, calculate the number of partitions S and the number of casters N for the 3-row arrangement of the composite part forming tooling casters. The specific operation is as follows:

[0057] (6-2) Compare the remaining number of partitions after pre-arrangement (Cr=3) and the pre-arrangement number (Na=2). When Cr≥Na, the number of 3-row composite part forming tooling casters is N=Na+1=2+1=3; where the number of partitions between 3 rows of 1 composite part forming tooling caster is S=Cr=3, and the number of partitions between 3 rows of 2 composite part forming tooling casters is S. The calculation formula is as follows:

[0058] S=(Smin+Smax) / 2=(2+6) / 2=4.

Claims

1. A method for calculating the arrangement of casters in a composite parts forming fixture, characterized in that... Comprising the following steps: 1-1 Calculate the number of frame partitions Cn in the length direction of the forming tool for composite material parts; 1-2 Determine the minimum spacing partition number Smin and maximum spacing partition number Smax for the caster arrangement of the forming tool for composite material parts according to the number of frame partitions Cn in the length direction of the forming tool for composite material parts; 1-3 Determine the number of overhanging partitions Cb at both ends of the forming tool for composite material parts according to the maximum spacing partition number Smax; 1-4 Calculate the pre-arrangement number Na of casters for the forming tool for composite material parts, and the calculation formula is as follows: Na= [(Cn-Cb)*2 / (Smin+ Smax)] +1; 1-5 Calculate the number of remaining partitions Cr after pre-arrangement of casters for the forming tool for composite material parts, and the calculation formula is as follows: Cr= Cn-Cb- (Na-1)*(Smin+ Smax) / 2; 1-6 Compare the number of remaining partitions Cr after pre-arrangement and the pre-arrangement number Na, calculate the spacing partition number S for caster arrangement and the number N of casters for the forming tool for composite material parts according to the comparison result, and the specific operations are as follows: a Compare the number of remaining partitions Cr after pre-arrangement with the pre-arrangement number Na, when Cr < Na, the number of casters N for the forming tool for composite material parts is N=Na; wherein the spacing partition number for Cr casters of the forming tool for composite material parts is S=(Smin+Smax) / 2+1, and the spacing partition number for the remaining N-Cr casters of the forming tool for composite material parts is S=(Smin+ Smax) / 2; b Compare the number of remaining partitions Cr after pre-arrangement with the pre-arrangement number Na, when Cr ≥ Na, the number of casters N for the forming tool for composite material parts is N=Na+1; wherein the spacing partition number for 1 caster of the forming tool for composite material parts is S=Cr, and the spacing partition number for Na casters of the forming tool for composite material parts is S=(Smin+ Smax) / 2.

2. The method for calculating the arrangement of casters in a composite parts forming tooling according to claim 1, characterized in that... In the step 1-2, determining the minimum spacing partition number Smin and maximum spacing partition number Smax for the caster arrangement of the forming tool for composite material parts according to the number of frame partitions Cn in the length direction of the forming tool for composite material parts: Smin>0, Smax≤Cn.

3. The method for calculating the arrangement of casters in a composite parts forming tooling according to claim 1, characterized in that... In the step 1-3, determining the number of overhanging partitions Cb at both ends of the forming tool for composite material parts according to the maximum spacing partition number Smax, wherein 0<Cb≤Smax.

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