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"DU HONGDANG"
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"DU HONGDANG"
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A limit for height device for equipment for heat treatment
by
DU HONGDANG
Year of Publication
10.07.2018
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Height limiting device of heat treatment equipment
by
DU HONGDANG
Year of Publication
13.03.2018
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3
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Stopping device for bearing grinding machine
by
SUN WANG
,
YIN JIAYAO
,
DU HONGDANG
Year of Publication
08.07.2015
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High-precision bearing inner groove grinding machine dresser
by
SUN WANG
,
YIN JIAYAO
,
DU HONGDANG
Year of Publication
08.07.2015
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Once grinding device for double stop edges of inner circle of short cylinder
by
SUN WANG
,
YIN JIAYAO
,
DU HONGDANG
Year of Publication
08.07.2015
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High-precision feeding device driven by linear motor
by
SUN WANG
,
YIN JIAYAO
,
DU HONGDANG
Year of Publication
08.07.2015
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7
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One-time grinding device and method of double blocking sides of inner ring of short cylinder
by
SUN WANG
,
YIN JIAYAO
,
DU HONGDANG
Year of Publication
20.05.2015
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8
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Full -automatic bearing ring internal grinding machine's electromagnet mechanism
by
PENG XIANG
,
ZHANG QUAN
,
DU HONGDANG
Year of Publication
02.11.2016
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9
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Bearing inner race raceway convexity trimmer
by
ZHANG QUAN
,
BANG XIANG
,
DU HONGDANG
Year of Publication
07.09.2016
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Full automatic grinding machine of screw nut internal screw thread
by
ZHANG QUAN
,
BANG XIANG
,
DU HONGDANG
Year of Publication
07.09.2016
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11
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Full -automatic bearing ring's inner ring raceway grinds superfinish device of super all -in -one
by
ZHAO XIUTONG
,
DU HONGDANG
,
HE QIREN
Year of Publication
07.09.2016
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12
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Superfinishing device of inner ring channel grinding-superfinishing integrated machine for full-automatic bearing ring
by
ZHAO XIUTONG
,
DU HONGDANG
,
HE QIREN
Year of Publication
20.07.2016
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Fully-automatic grinder for screw rod nut inner thread
by
PENG XIANG
,
ZHANG QUAN
,
DU HONGDANG
Year of Publication
22.06.2016
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Bearing race flange width measurement device
by
ZHANG QUAN
,
DU HONGDANG
Year of Publication
19.12.2012
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15
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Measuring device for width of bearing ring flange
by
ZHANG QUAN
,
DU HONGDANG
Year of Publication
07.03.2012
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16
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Adjusting device for grinding head center of generating grinding device
by
FENG WANSHOU
,
DU HONGDANG
Year of Publication
29.06.2011
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Simultaneous grinding machine tool of ditch slopes of angular contact bearing
by
FENG WANSHOU
,
DU HONGDANG
Year of Publication
16.06.2010
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18
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Hydraulic oil cylinder of inner-diameter grinding machine
by
DU HONGDANG
,
GUO WENSHUANG
Year of Publication
19.05.2010
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19
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Automatic locking device for workpiece boxes
by
LI HUI
,
WU YUMIN
,
DU HONGDANG
,
WANG SUBAO
Year of Publication
15.01.2014
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Twin roller support mechanism
by
DU HONGDANG
,
LU BINGBING
Year of Publication
29.06.2011
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performing operations
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transporting
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dressing or conditioning of abrading surfaces
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feeding of grinding, polishing, or lapping agents
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grinding
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