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Total Draft = Main Draft x Break Draftġ7. Surface Speed of Roller = π x Roller Dia x Roller RPMġ5. ……………………….Surface Speed of Middle Rollerġ4. ……………………………Spindle Speed x No of Spindle x Efficiency x 0.59 x 60 x 24 Yarn Count = Roving Hank x Ring DraftĮxample: Calculate the machine production per day using the following parameters. ………………………….Spindle Speed x No of Spindle x Effi. ……………………………………Total Shift Time – Total Stoppage Time Total Stoppage Time = 12 + 13 + 17 = 42 Mins Machine Efficiency = - x 100Įxample: Calculate the Ring Frame machine efficiency using the following parameters. ……………………………….Total Shift Time – Total Stoppage TimeĨ. Required TCP x Required TPI = Existing TCP x Existing TPI Required TCP x Required TPI = Existing TCP x Existing TPIĮxample: Find out the required TCP to produce 40 Ne carded woven yarn when twist multiplier is 4.4, existing TCP is 48T and existing TPI is 22.6 ……………………………….Spindle Speed x 60 x 24 x EfficiencyĤ261 Spindles will be required and if there are 504 Spindle/Ring Frame, then required-ħ. How many Ring Frames will be required to fulfill these requirements? Assuming necessary parameters. …………………………………Spindle Speed x 60 x 24 x EfficiencyĮxample: If production requirement of 40 Ne cotton yarn is 2500 lbs/day. Production Loss in Spindle-hr = No of Spindle x Time in Hour Here Given, Ounce per Spindle Production, OPS = 4 Find out the production loss in lbs and spindle-hr for block creeling.
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Production Loss in lbs = -Įxample: A Ring Frame was stopped for 30 minutes due to back creeling. Production Loss in Spindle-hr = No of Spindle x Time in HourĤ. …………………………………….Spindle Speed x No of Spindle x Efficiency x 60 x 8 Find out its production in lbs per shift.
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If the machine runs at 96% efficiency and twist multiplier is 4.2. ………………………………………….TPI x Yarn Count x 36 x 840Įxample: In a Ring Frame 40 Ne carded yarn is to be spun in which spindle speed is 16000 rpm and there are 504 working spindles. ………………………………….Spindle Speed x No of Spindle x Effi. Ring Frame Production Calculation Formula with Examples *** Yarn Count means the number of 840 yards length that weight exactly 1 pound (lb) Some Important Conversion Factors for Ring Frame Production Calculation: Some important calculation (Draft, Draft Constant, Twist Constant, TPI, TPM, Machine Production, Production Loss, Machine Efficiency, No of Spindle, No of Ring Frame, TCP, Yarn Count etc.) of Ring Frame machine are explained below. So, calculations play an important role in Ring Frame. Usually three actions (Drafting, Twisting & Package Formation) are done in this process. Actually, Ring spinning is a method of producing yarn from fibers like cotton, wool, flax etc. Ring Frame is the last and most important machine in a spinning mill where the final draft is applied on roving and converted to yarn with the required count, i.e., the final yarn with desired count gets spun on the Ring Frame machine.