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 หัวเรื่อง:ไม่มีชื่อไทย (ชื่ออังกฤษ : An Application of Finished Test Piece Methods for Evaluating the Performance of Computer Numerical Control Machining and Turning Centers) ผู้เขียน: Kittichote Supakumnerd,  ดร.ชัชพล ชังชู, รองศาสตราจารย์ สื่อสิ่งพิมพ์:pdf AbstractCurrently, many mechanical parts are produced from computer numerical control (CNC) machines including CNC machining centers and CNC turning centers. In order to keep production costs as low as possible, workpieces have to be rejected at the minimum rate. This can be done, but it depends on many parameters. One important parameter is adequate machine performance to produce the workpiece. In this research, a new technique was introduced to evaluate the performance of both CNC machining and turning centers. The first benefit of this technique is that manufacturers can evaluate a machine’s performance themselves (no expert is required). The second benefit is that the approximate workpiece dimensions can be predicted in advance. In addition, using the standard test piece, experimental results confirmed that this new technique can be used in industry. |
หัวเรื่อง:ไม่มีชื่อไทย (ชื่ออังกฤษ : New Practical Dimensioning Tolerance Allocation Technique for Assembly of Mechanical Parts) ผู้เขียน:Kittichote Supakumnerd, Kamuttraiyoe Chutasen, ไพรีพินาศ พิมพิสาร, ดร.ชัชพล ชังชู, รองศาสตราจารย์ สื่อสิ่งพิมพ์:pdf AbstractCurrently, the assembly tolerance allocation of precision mechanical equipment can be determined by many methods such as engineer’s experience, the worst on worst tolerance analysis method, the root sum square tolerance analysis method, or the Monte Carlo simulation method. However, there are other factors that need to be considered when engineers allocate individual tolerance values to each part. Examples of these factors include the production cost and the uncertainty of the measuring equipment. A new method for allocating a suitable tolerance value to each part or component was developed. By using a real industrial case study, the experimental results indicated that the new method could provide suitable component tolerance values for the production line. Compared with the leveling technique, the results also indicated that the new method can provide better tolerance values. However, this new method has a major limitation in that it can be used only for linear tolerance. |
Researcherดร. ชัชพล ชังชู, รองศาสตราจารย์ที่ทำงาน:ภาควิชาวิศวกรรมเครื่องกล คณะวิศวกรรมศาสตร์ สาขาที่สนใจ:Manufacturing, CNC Performance Testing, Geometric Dimensioning and Tolerancing Resume |
 Researcherนาง ชมาพร เจียรบุตร, ผู้ช่วยศาสตราจารย์ที่ทำงาน:ภาควิชาวิศวกรรมเครื่องกล คณะวิศวกรรมศาสตร์ สาขาที่สนใจ:Microbial fuel cell, Biofuel, Instruments, Automation system, Computer Numerical Controller, CNC, PLC, Pneumatics Resume |