Machine Unit Accuracy Assurance Based on Common  Modules Taking Into Account  Joints Contact Stiffness

Design and technological concepts are viewed at the stages of designing, manufacturing and joining process providing for the required reliability (durability) of mold elements. Recommendations are given for rationing and achieving the parameters of accuracy and quality of mating surfaces, taking into account the formation of the necessary operational properties at the main stages of the product life cycle. The factors that have the greatest impact on ensuring the correct and accurate location of forming tool elements have been elicited. The concept of determining the actual contact area and calculating the scale parameter, which provides a contact interface degree specification for conjugated surfaces, is presented. The hypothesis of the formation of reliability indicators is found, taking into account the manufacturing capability and technical capacity of production with the introduction of correction of the upper and lower dimensional deviations included in the dimension chains and ensuring the pre-set accuracy parameters of the master link. The analysis of the operating conditions of the studied type of pressmold elements is carried out. The main operational properties that provide the required operating time for shaping part failures are identified and analyzed. Special attention is paid to the study of the structural features of such parts, a comparison of the integral and prefabricated structures is made, and also, contact stresses under the joining operation for the most promising of the latter are calculated for contact interface degree simulation. This will allow developing practical recommendations for any type of compound forming tool for the benefit of basic mechanical properties rate making, accuracy indicators, including deviation allowances in the correct geometric shape, including quality parameters of the surface layer at the designing stage,processing methods dispatch and modes setting at the manufacturing and testing stages and also suggesting the amount of static loading when assembling.

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Method to Design Linear Displacement Modules Based on Unified Modules

Fedukov¹

2022

Transport Engineering

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The study objective is the design and technological support of the accuracy of linear displacement modules based on unified parts and assemblies of rail guides and ball screws. The task to which the paper is devoted is to refine techniques in the design of linear displacement modules of machining equipment. Research methods: experimental studies and existing computational research methods to determine the value of contact approach. Novelty of the work: a method of designing linear displacement modules based on unified modules is developed, taking into account the values of contact approaches, where the criterion for assessing quality is the power characteristics of the linear displacement module. Research results: a method for designing linear displacement modules based on unified modules is developed. Conclusions: when designing linear modules for displacing technological equipment, including the value of contact approach in the calculations is usually relevant for high-precision linear modules.

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Machine Unit Accuracy Assurance Based on Common Modules Taking Into Account Joints Contact Stiffness

Cited by 4 publications

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Accuracy analysis of billet installation upon support prisms taking into account dimensional tie impac

Accuracy analysis of billet installation upon support prisms taking into account dimensional tie impac

Engineering support of mating surfaces operational properties in the compound forming tool elements with regard to specified pressmold life

Method to Design Linear Displacement Modules Based on Unified Modules

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