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Recent questions tagged tool-life-and-wear
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GATE2020-ME-2: 45
Bars of $250$ mm length and $25$ mm diameter are to be turned on a lathe with a feed of $0.2$ mm/rev. Each regrinding of the tool costs Rs. $20$. The time required for each tool change is $1$ ... tool life $T$ is in min). The optimum tool cost per piece for maximum production rate is Rs. _______ (round off to $2$ decimal places).
Bars of $250$ mm length and $25$ mm diameter are to be turned on a lathe with a feed of $0.2$ mm/rev. Each regrinding of the tool costs Rs. $20$. The time required for ea...
go_editor
5.0k
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go_editor
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Sep 18, 2020
Materials, Manufacturing and Industrial Engineering
gateme-2020-set2
numerical-answers
tool-life-and-wear
machining-and-machine-tool-operations
materials-manufacturing-and-industrial-engineering
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GATE2019 ME-1: 53
Taylor’s tool life equation is given by $VT^n=C$, where $V$ is in $m/min$ and $T$ is in $min$. In a turning operation, two tools $X$ and $Y$ are used. For tool $X$, $n=0.3$ and $C=60$ and for tool $Y$, $n=0.6$ and $C=90$. Both the tools will have the same tool life for the cutting speed (in $m/min$, round off to one decimal place) of ____________
Taylor’s tool life equation is given by $VT^n=C$, where $V$ is in $m/min$ and $T$ is in $min$. In a turning operation, two tools $X$ and $Y$ are used. For tool $X$, $n=...
Arjun
28.5k
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Arjun
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Feb 9, 2019
Materials, Manufacturing and Industrial Engineering
gateme-2019-set1
numerical-answers
materials-manufacturing-and-industrial-engineering
machining-and-machine-tools-operations
tool-life-and-wear
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0
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0
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GATE2018-1-13
Using the Taylor's tool life equation with exponent $n=0.5$, if th cutting speed is reduced by $50$, the ratio of new tool life to original tool life is $4$ $2$ $1$ $0.5$
Using the Taylor's tool life equation with exponent $n=0.5$, if th cutting speed is reduced by $50$, the ratio of new tool life to original tool life is$4$$2$$1$$0.5$
Arjun
28.5k
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Arjun
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Feb 17, 2018
Materials, Manufacturing and Industrial Engineering
gateme-2018-set1
materials-manufacturing-and-industrial-engineering
machining-and-machine-tools-operations
tool-life-and-wear
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0
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0
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GATE2017 ME-2: 54
During the turning of a $20$ mm- diameter steel bar at a spindle speed of $400$ rpm, a tool life of $20$ minute is obtained. When the same bar is turned at $200$ rpm, the tool life becomes $60$ minute. Assume that Taylor's tool life equation is valid. When the bar is turned at $300$ rpm, the tool life (in minute) is approximately. $25$ $32$ $40$ $50$
During the turning of a $20$ mm- diameter steel bar at a spindle speed of $400$ rpm, a tool life of $20$ minute is obtained. When the same bar is turned at $200$ rpm, the...
Arjun
28.5k
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Arjun
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Feb 26, 2017
Materials, Manufacturing and Industrial Engineering
gateme-2017-set2
materials-manufacturing-and-industrial-engineering
machining-and-machine-tools-operations
tool-life-and-wear
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0
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0
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GATE2016-3-51
In a single point turning operation with cemented carbide tool and steel work piece, it is found that the Taylor’s exponent is $0.25$. If the cutting speed is reduced by $50 \%$ then the tool life changes by ______ times.
In a single point turning operation with cemented carbide tool and steel work piece, it is found that the Taylor’s exponent is $0.25$. If the cutting speed is reduced b...
Arjun
28.5k
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Arjun
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Feb 24, 2017
Materials, Manufacturing and Industrial Engineering
gateme-2016-set3
numerical-answers
materials-manufacturing-and-industrial-engineering
machining-and-machine-tools-operations
tool-life-and-wear
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GATE2016-1-50
The tool life equation for HSS tool is $VT^{0.14}f^{0.7}d^{0.4}$ = constant. The tool life $(T)$ of $30 \: min$ is obtained using the following cutting conditions: $V=45\:m/min$, $f=0.35 \: mm$, $d=2.0 \: mm$ If speed $(V)$, feed $(f)$ and depth of cut $(d)$ are increased individually by $25\%$, the tool life (in $min$) is $0.15$ $1.06$ $22.50$ $30.0$
The tool life equation for HSS tool is $VT^{0.14}f^{0.7}d^{0.4}$ = constant. The tool life $(T)$ of $30 \: min$ is obtained using the following cutting conditions:$V=45\:...
Arjun
28.5k
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Arjun
asked
Feb 24, 2017
Materials, Manufacturing and Industrial Engineering
gateme-2016-set1
materials-manufacturing-and-industrial-engineering
machining-and-machine-tools-operations
tool-life-and-wear
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0
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0
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GATE2015-1-23
Under certain cutting conditions, doubling the cutting speed reduces the tool life to $\left (\dfrac{1}{16} \right)^{th}$ of the original. Taylor’s tool life index ($n$) for this tool-workpiece combination will be _______
Under certain cutting conditions, doubling the cutting speed reduces the tool life to $\left (\dfrac{1}{16} \right)^{th}$ of the original. Taylor’s tool life index ($n$...
Arjun
28.5k
points
Arjun
asked
Feb 24, 2017
Materials, Manufacturing and Industrial Engineering
gateme-2015-set1
numerical-answers
materials-manufacturing-and-industrial-engineering
machining-and-machine-tools-operations
tool-life-and-wear
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0
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GATE Mechanical 2014 Set 4 | Question: 21
Two separate slab milling operations, $1$ and $2$, are performed with identical milling cutters. The depth of cut in operation $2$ is twice that in operation $1$. The other cutting parameters are identical. The ratio of maximum uncut chip thicknesses in operations $1$ and $2$ is _______
Two separate slab milling operations, $1$ and $2$, are performed with identical milling cutters. The depth of cut in operation $2$ is twice that in operation $1$. The oth...
Arjun
28.5k
points
Arjun
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Feb 19, 2017
Materials, Manufacturing and Industrial Engineering
gateme-2014-set4
numerical-answers
materials-manufacturing-and-industrial-engineering
machining-and-machine-tools-operations
tool-life-and-wear
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0
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0
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GATE Mechanical 2014 Set 3 | Question: 20
A straight turning operation is carried out using a single point cutting tool on an AISI $1020$ steel rod. The feed is $0.2$ $mm/rev$ and the depth of cut is $0.5$ $mm$. The tool has a side cutting edge angle of $60^{\circ}$. The uncut chip thickness (in $mm$) is _______
A straight turning operation is carried out using a single point cutting tool on an AISI $1020$ steel rod. The feed is $0.2$ $mm/rev$ and the depth of cut is $0.5$ $mm$. ...
Arjun
28.5k
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Arjun
asked
Feb 19, 2017
Materials, Manufacturing and Industrial Engineering
gateme-2014-set3
numerical-answers
materials-manufacturing-and-industrial-engineering
machining-and-machine-tools-operations
tool-life-and-wear
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0
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0
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GATE ME 2013 | Question: 34
Two cutting tools are being compared for a machining operation. The tool life equations are: $\begin{array}{ll} \text{Carbide tool:} & VT^{1.6} = 3000 \\ \text{HSS tool:} & VT^{0.6} = 200 \end{array}$ where $V$ is the cutting speed in $m/min$ ... $m/min$ exceeds $15.0$ $39.4$ $49.3$ $60.0$
Two cutting tools are being compared for a machining operation. The tool life equations are:$\begin{array}{ll} \text{Carbide tool:} & VT^{1.6} = 3000 \\ \text{HSS tool:} ...
piyag476
1.4k
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piyag476
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Feb 19, 2017
Materials, Manufacturing and Industrial Engineering
gateme-2013
materials-manufacturing-and-industrial-engineering
machining-and-machine-tool-operation
tool-life-and-wear
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