CN103900482B - Injection machine matched moulds thrust bearing straight-line displacement device for accurately measuring and installation method thereof - Google Patents
Injection machine matched moulds thrust bearing straight-line displacement device for accurately measuring and installation method thereof Download PDFInfo
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- CN103900482B CN103900482B CN201410127515.8A CN201410127515A CN103900482B CN 103900482 B CN103900482 B CN 103900482B CN 201410127515 A CN201410127515 A CN 201410127515A CN 103900482 B CN103900482 B CN 103900482B
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- read head
- thrust bearing
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- 238000006073 displacement reaction Methods 0.000 title claims abstract description 26
- 238000002347 injection Methods 0.000 title claims abstract description 20
- 239000007924 injection Substances 0.000 title claims abstract description 20
- 238000009434 installation Methods 0.000 title claims abstract description 15
- 238000000034 method Methods 0.000 title claims abstract description 13
- 239000000203 mixture Substances 0.000 claims description 7
- 238000010030 laminating Methods 0.000 claims description 4
- 238000006396 nitration reaction Methods 0.000 claims description 3
- 238000005259 measurement Methods 0.000 description 8
- 238000010586 diagram Methods 0.000 description 5
- 238000013461 design Methods 0.000 description 4
- 238000004891 communication Methods 0.000 description 2
- 238000012545 processing Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000001746 injection moulding Methods 0.000 description 1
- 230000003287 optical effect Effects 0.000 description 1
- 239000000243 solution Substances 0.000 description 1
- 230000003068 static effect Effects 0.000 description 1
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Abstract
The invention discloses a kind of injection machine matched moulds thrust bearing straight-line displacement device for accurately measuring and installation method thereof, this device includes rear pattern plate mounting platform, thrust bearing mounting platform, blade support and read head support；Blade is parallel with guide post axis with read head, blade is fixed together by blade support and rear pattern plate, read head is fixed together by read head support and thrust bearing, the blade of grating scale and read head can be placed in the appropriate location of injection machine small space, ensure that blade be parallel to each other with read head with and direction of displacement parallel, meet status requirement, it is prevented that damage grating scale, ensure and accurately directly measure thrust bearing mechanical displacement.
Description
Technical field
The invention belongs to machine-building and fields of measurement, relate to the measurement apparatus of a kind of mechanical movement straight-line displacement, particularly relate to a kind of injection machine matched moulds thrust bearing straight-line displacement device for accurately measuring and installation method thereof.
Background technology
In injection machine; thrust bearing within the left and right lead arm of rear pattern plate along guide post sliding; spaces compact within machine is limited; and thrust bearing displacement is for understanding and control the precision of clamping and then to realize precise injection molding be highly important, many situations need directly accurately to measure the actual machine displacement of thrust bearing.
The grating scale (comprising blade and read head) that market is bought is adopted when measuring straight-line displacement, but as the grating scale blade of accurate measurement element and read head to being provided with strict demand.Requiring that blade direction is parallel with the read head direction of motion, namely parallel with guide post axis direction, the depth of parallelism is less than 0.1mm；Requiring that read head direction is parallel with the direction of motion, namely parallel with guide post axis direction, the depth of parallelism is less than 0.1mm；Require that blade installed surface is parallel with read head installed surface, the depth of parallelism between installed surface is less than 0.1mm, it is, after blade support is arranged on rear pattern plate, read head support is arranged on thrust bearing, the blade installed surface on two stands and the read head installed surface depth of parallelism are less than 0.1mm；Read head and blade have relative position requirement in the horizontal direction, and read head is away from blade installed surface 0.5mm；Read head and blade have relative position requirement, read head and blade gap in the vertical direction in the vertical direction between 0.8 ~ 1.6mm.
The existing use scope of grating scale is usually three-coordinates measuring machine, lathe work platforms etc., is usually mounted to open spaces, and blade is directly mounted at static fuselage, read head is installed on the moving components such as slide plate.
So, for overcoming narrow space in injection machine, grating scale blade and read head being accurately installed on suitable locus, the accurate device ensureing the direction of blade and read head, directly measurement thrust bearing mechanical displacement, it is necessary to design grating scale blade and the read head mounting structure on injection machine, auxiliary member, installation method.
Summary of the invention
Present invention aims to the deficiencies in the prior art, a kind of injection machine matched moulds thrust bearing straight-line displacement device for accurately measuring and installation method thereof are provided, by design and installation structure, auxiliary member, installation method etc., realize in the small space of injection machine, grating scale blade and read head are accurately installed on the direction of suitable locus, accurate guarantee blade and read head, directly accurately measure thrust bearing relative to rear pattern plate mechanical displacement.
It is an object of the invention to be achieved through the following technical solutions: a kind of injection machine matched moulds thrust bearing straight-line displacement device for accurately measuring, including: rear pattern plate mounting platform, thrust bearing mounting platform, blade support and read head support；
Rear pattern plate mounting platform is corresponding with blade support canned paragraph lower surface size in rear pattern plate lead arm upper end and two guide post axis rectangular horizontal of having the depth of parallelism to require；Rear pattern plate mounting platform has rear pattern plate installing hole, and the distribution of rear pattern plate installing hole and specification corresponding with installing hole on blade support canned paragraph；
Thrust bearing mounting platform is corresponding with read head support canned paragraph lower end plane size on inclined-plane upward, thrust bearing side and two guide post axis rectangular horizontal of having the depth of parallelism to require；Thrust bearing mounting platform has thrust bearing installing hole；
Blade support is the space slab structure of blade section, supporting section, blade support canned paragraph three sections composition, and blade section is connected with supporting section and copline, and blade support canned paragraph is connected with supporting section and is mutually perpendicular to；Blade support canned paragraph has group leader's circular mounting hole, and its distribution and size are corresponding with rear pattern plate installing hole；
Read head support is the space slab structure of reading head section, read head support canned paragraph two-stage nitration composition, and read head support canned paragraph is connected with reading head section and is mutually perpendicular to；Having Long Circle installing hole in reading head section, its distribution is corresponding with the screwed hole on grating ruler reading head with size；Read head support canned paragraph has group leader's circular mounting hole, and its distribution and size are corresponding with thrust bearing installing hole.
The installation method of a kind of injection machine matched moulds thrust bearing straight-line displacement device for accurately measuring, comprises the steps:
(1) by blade support canned paragraph lower end plane and the laminating of rear pattern plate mounting platform, and make its Long Circle installing hole align with rear pattern plate installing hole, adjust blade holder orientation at horizontal plane so that it is parallel with guide post axis, with one group of first screw, blade support and rear pattern plate are fixed together；The blade section of grating scale blade side with blade support is fitted, and make the Long Circle installing hole of grating scale blade align with the screwed hole of blade section, blade direction is adjusted at vertical, make grating scale blade parallel with guide post axis, with one group of the 3rd screw, grating scale blade and blade support are fixed together；By in horizontal plane and vertical adjustment, making grating scale blade and guide post axis meet depth of parallelism requirement；
(2) the reading head section of grating ruler reading head side with read head support is fitted, and make the screwed hole of grating ruler reading head align with the Long Circle installing hole of reading head section, grating ruler reading head direction and vertical height is adjusted at vertical, make grating ruler reading head parallel with guide post axis, and make grating ruler reading head and grating scale blade meet relative position requirement in the vertical direction, with one group of the 3rd screw, grating ruler reading head and read head support are fixed together；
(3) by read head support canned paragraph lower end plane and the laminating of thrust bearing mounting platform, and make its Long Circle installing hole align with thrust bearing installing hole, read head holder orientation and horizontal level is adjusted at horizontal plane, make it parallel with guide post axis direction, and make grating ruler reading head and grating scale blade meet relative position requirement in the horizontal direction, with one group of second screw, read head support and thrust bearing are fixed together；
(4) hocket step 2 and step 3, and final installation is fixing makes grating ruler reading head parallel with guide post axis, and makes grating ruler reading head and grating scale blade both horizontally and vertically meet relative position requirement；
(5) by the depth of parallelism requirement of rear pattern plate mounting platform, thrust bearing mounting platform position and two guide post axis composition planes, the perpendicularity requirement of blade support canned paragraph and supporting section, the perpendicularity requirement of read head support canned paragraph and reading head section, and adjust read head holder orientation at horizontal plane, make the blade installed surface on blade support meet depth of parallelism requirement with the read head installed surface on read head support.
The invention has the beneficial effects as follows: in injection machine small space, realize straight-line displacement measure, it is ensured that read head and blade meet the depth of parallelism after installing and require, meet status requirement, it is prevented that damage grating scale, ensure and accurately directly measure thrust bearing mechanical displacement.
Accompanying drawing explanation
Fig. 1 is rear pattern plate mounting platform and installing hole schematic diagram；
Fig. 2 is thrust bearing mounting platform and installing hole schematic diagram；
Fig. 3 is blade support schematic diagram；
Fig. 4 is read head support schematic diagram；
Fig. 5 is measurement apparatus assembling schematic diagram；
In figure, rear pattern plate 1, rear pattern plate mounting platform 2, rear pattern plate installing hole 3, thrust bearing 4, thrust bearing mounting platform 5, thrust bearing installing hole 6, blade support 7, blade section 8, supporting section 9, blade support canned paragraph 10, read head support 11, reading head section 12, read head support canned paragraph 13, guide post 14, grating scale blade 15, grating ruler reading head the 16, first screw the 17, the 3rd screw the 18, second screw 19.
Detailed description of the invention
In injection machine, the borehole jack of thrust bearing both sides, on two guide posts, does linear reciprocating motion along guide post.Straight-line displacement adopts optical grating ruler measurement, and grating scale comprises blade and read head.
Owing to injection machine matched moulds thrust bearing is to move in the small space of rear pattern plate, the inside compact conformation, space are little, in order to the blade of grating scale and read head are placed on suitable locus, and reflect the motion of the relative rear pattern plate of thrust bearing, need design blade support and read head support on the one hand, respectively blade and read head being supported, and be that blade is connected with rear pattern plate, read head is connected with thrust bearing；On the other hand, it is necessary on rear pattern plate and thrust bearing, process plane and installing hole, to ensure grating scale to be made reliablely and stablely to install connection by auxiliary stand.
Measure blade and read head used by straight-line displacement to being provided with strict demand.So blade support and read head support are done special design, the plane of processing on rear pattern plate and thrust bearing and position and the shape size of installing hole are specially required, makees to consider especially to the installation of blade support and read head support and the installation of blade and read head.
Adopt in the structure of the present invention and the injection machine matched moulds thrust bearing linear displacement measurement device of installation method, blade is parallel with guide post axis with read head, blade is fixed together by blade support and rear pattern plate, read head is fixed together by read head support and thrust bearing, the blade of grating scale and read head can be placed in the appropriate location of injection machine small space, ensure that blade be parallel to each other with read head with and direction of displacement parallel, in order to accurately measure shift value.When thrust bearing moves relative to rear pattern plate, the major and minor grating relative displacement of grating scale that blade and read head are constituted, produce mole stripe order recognition, this change is converted to the signal of telecommunication by precise light electric device.The signal of telecommunication of grating scale output processes through signal processing circuit, exports the digital signal of corresponding displacement, and transmits data by communication interface and communication cable to computer equipment.
Below for a certain model injection machine matched moulds thrust bearing relative to the measurement apparatus of rear pattern plate straight-line displacement, further illustrate the present invention in conjunction with Fig. 1 to Fig. 5.
As shown in Figure 1, a rectangular horizontal is done as rear pattern plate mounting platform 2 in the upper end of a lead arm of rear pattern plate 1, the size of this plane is corresponding with blade support canned paragraph 10 lower end plane size, and the plane that the position of this plane is constituted with two guide post 14 axis has depth of parallelism requirement.Doing two screwed holes again on rear pattern plate mounting platform 2 corresponding with the installing hole on blade support canned paragraph 10 as rear pattern plate installing hole 3, the distribution of screwed hole and specification, the specification of screwed hole is corresponding with the first screw 17.
As shown in Figure 2, inclined-plane upward, thrust bearing 4 side does a rectangular horizontal as thrust bearing mounting platform 5, the size of this plane is corresponding with read head support canned paragraph 13 lower end plane size, and the plane that the position of this plane is constituted with two guide post 14 axis has depth of parallelism requirement.Doing two screwed holes again on thrust bearing mounting platform 5 corresponding with the installing hole on read head support canned paragraph 13 as thrust bearing installing hole 6, the distribution of screwed hole and specification, the specification of screwed hole is corresponding with the second screw 19.
As shown in Figure 3, blade support 7 is space slab structure, it is divided into three sections, respectively blade section 8, supporting section 9, blade support canned paragraph 10, blade section 8 is connected and copline with supporting section 9, blade support canned paragraph 10 is connected and vertical with supporting section 9, and blade support canned paragraph 10 and supporting section 9 have perpendicularity requirement.The length and width of blade section 8 is corresponding with the length and width of grating scale blade 15, and blade section 8 has two screwed holes, and the distribution of screwed hole is corresponding with the installing hole on blade 15 with specification, and the specification of screwed hole is corresponding with the 3rd screw 18.Blade support canned paragraph 10 has two Long Circle installing holes, and its distribution and size are corresponding with two rear pattern plate installing hole 3 screwed holes on rear pattern plate mounting platform 2.
As shown in Figure 4, read head support 11 is space slab structure, is divided into two-stage nitration, respectively reading head section 12, read head support canned paragraph 13, read head support canned paragraph 13 is connected and vertical with reading head section 12, and read head support canned paragraph 13 and reading head section 12 have perpendicularity requirement.The length and width of reading head section 12 is corresponding with the length and width of grating ruler reading head 16, and reading head section 12 has two Long Circle installing holes, and the distribution of installing hole is corresponding with the screwed hole on grating ruler reading head 16 with size.Read head support canned paragraph 13 has two Long Circle installing holes, and its distribution and size are corresponding with two thrust bearing installing hole 6 screwed holes on thrust bearing mounting platform 5.
Grating scale blade 15 basic configuration is vertical bar structure, has installing hole at two ends, and wherein one end is horizontal Long Circle installing hole, and the other end is vertically long circular mounting hole.
Grating ruler reading head 16 basic configuration is vertical bar structure, connects together with grating scale blade 15, it is possible to grating scale blade 15 slides relatively, and the two ends of grating ruler reading head 16 are respectively arranged with a screwed hole.
As shown in Figure 5, the lower end plane of blade support canned paragraph 10 on blade support 7 and rear pattern plate mounting platform 2 are fitted, and the Long Circle installing hole on blade support canned paragraph 10 is alignd with rear pattern plate installing hole 3 screwed hole, the Long Circle installing hole of two the first screw 17 traverse blade support canned paragraphs 10, screw with rear pattern plate installing hole 3 screwed hole, blade support 7 and rear pattern plate 1 are fixed together.Tighten 17 blade supports of the first screw 7 fixing with rear pattern plate 1 before, it is necessary to the Long Circle installing hole by blade support canned paragraph adjusts blade holder orientation at horizontal plane, makes blade support 7 parallel with guide post 14 axis.
The blade section 8 of the side of grating scale blade 15 Yu blade support 7 is fitted, and the Long Circle installing hole of grating scale blade 15 is alignd with the screwed hole of blade section 8, the Long Circle installing hole of two the 3rd screw 18 traverse blades 15, screw with the screwed hole of blade section 8, blade 15 and blade support 7 are fixed together.Tighten 18 grating scale blades of the 3rd screw 15 fixing with blade support 7 before, it is necessary to adjust grating scale blade 15 direction by Long Circle installing hole on grating scale blade 15 at vertical, make grating scale blade 15 parallel with guide post 14 axis.By in horizontal plane and vertical adjustment, making grating scale blade 15 and guide post 14 axis meet depth of parallelism requirement.
The reading head section 12 of the side of grating ruler reading head 16 Yu read head support 11 is fitted, and the screwed hole of read head 16 is alignd with the Long Circle installing hole of reading head section 12, the Long Circle installing hole of one group of the 3rd screw 18 traverse reading head section 12, screw with the screwed hole of grating ruler reading head 16, grating ruler reading head 16 and read head support 11 are fixed together.Before stubborn 18 grating ruler reading heads of 3rd screw 16 are fixing with read head support 11, the Long Circle installing hole by reading head section 12 is needed to adjust grating ruler reading head 16 direction and vertical height at vertical, make grating ruler reading head 16 parallel with guide post 14 axis, and make grating ruler reading head 16 and grating scale blade 15 meet relative position requirement in the vertical direction.
The lower end plane of read head support canned paragraph 13 and thrust bearing mounting platform 5 are fitted, and the Long Circle installing hole of read head support canned paragraph 13 is alignd with thrust bearing installing hole 6 screwed hole, the Long Circle installing hole of two the second screw 19 traverse read head support canned paragraphs 13, screw with thrust bearing installing hole 6 screwed hole, read head support 11 and thrust bearing 4 are fixed together.Tighten 19 read head supports of the second screw 11 fixing with thrust bearing 4 before, the Long Circle installing hole by read head support canned paragraph 13 is needed to adjust read head support 11 direction and horizontal level at horizontal plane, make read head support 11 parallel with guide post 14 axis direction, and make grating ruler reading head 16 and grating scale blade 15 meet relative position requirement in the horizontal direction.
Depth of parallelism requirement by rear pattern plate mounting platform 2, thrust bearing mounting platform 5 position and two guide post 14 axis composition planes, the perpendicularity requirement of blade support canned paragraph 10 and supporting section 9, the perpendicularity requirement of read head support canned paragraph 13 and reading head section 12, and adjust read head support 11 direction at horizontal plane, make the blade installed surface on blade support 7 meet depth of parallelism requirement with the read head installed surface on read head support 11.
Claims (1)
1. an installation method for injection machine matched moulds thrust bearing straight-line displacement device for accurately measuring, described injection machine matched moulds thrust bearing straight-line displacement device for accurately measuring includes: rear pattern plate mounting platform (2), thrust bearing mounting platform (5), blade support (7) and read head support (11)；Rear pattern plate mounting platform (2) is corresponding with blade support canned paragraph (10) lower surface size in rear pattern plate (1) lead arm upper end and two guide post (14) axis rectangular horizontal of having the depth of parallelism to require；Rear pattern plate mounting platform (2) has rear pattern plate installing hole (3), and the distribution of rear pattern plate installing hole (3) and specification corresponding with the upper installing hole of blade support canned paragraph (10)；Thrust bearing mounting platform (5) is corresponding with read head support canned paragraph (13) lower end plane size on inclined-plane upward, thrust bearing (4) side and two guide post (14) axis rectangular horizontal of having the depth of parallelism to require；Thrust bearing mounting platform (5) has thrust bearing installing hole (6)；Blade support (7) is blade section (8), the space slab structure of supporting section (9), blade support canned paragraph (10) three sections composition, blade section (8) is connected and copline with supporting section (9), and blade support canned paragraph (10) is connected with supporting section (9) and is mutually perpendicular to；Blade support canned paragraph (10) has group leader's circular mounting hole, and its distribution and size are corresponding with rear pattern plate installing hole (3)；Read head support (11) is reading head section (12), the space slab structure of read head support canned paragraph (13) two-stage nitration composition, and read head support canned paragraph (13) is connected with reading head section (12) and is mutually perpendicular to；Reading head section has Long Circle installing hole on (12), and its distribution is corresponding with the screwed hole on grating ruler reading head (16) with size；Read head support canned paragraph (13) has group leader's circular mounting hole, and its distribution and size are corresponding with thrust bearing installing hole (6)；It is characterized in that, the method comprises the steps:
(1) by blade support canned paragraph (10) lower end plane and rear pattern plate mounting platform (2) laminating, and make its Long Circle installing hole align with rear pattern plate installing hole (3), blade support (7) direction is adjusted at horizontal plane, make it parallel with guide post (14) axis, with one group of first screw (17), blade support (7) and rear pattern plate (1) are fixed together；The blade section (8) of grating scale blade (15) side with blade support (7) is fitted, and make the Long Circle installing hole of grating scale blade (15) align with the screwed hole of blade section (8), blade direction is adjusted at vertical, make grating scale blade (15) parallel with guide post (14) axis, with one group of the 3rd screw (18), grating scale blade (15) and blade support (7) are fixed together；By in horizontal plane and vertical adjustment, making grating scale blade (15) and guide post (14) axis meet depth of parallelism requirement；
(2) the reading head section (12) of grating ruler reading head (16) side with read head support (11) is fitted, and make the screwed hole of grating ruler reading head (16) align with the Long Circle installing hole of reading head section (12), grating ruler reading head (16) direction and vertical height is adjusted at vertical, make grating ruler reading head (16) parallel with guide post (14) axis, and make grating ruler reading head (16) and grating scale blade (15) meet relative position requirement in the vertical direction, with one group of the 3rd screw (18), grating ruler reading head (16) and read head support (11) are fixed together；
(3) by read head support canned paragraph (13) lower end plane and thrust bearing mounting platform (5) laminating, and make its Long Circle installing hole align with thrust bearing installing hole (6), read head support (11) direction and horizontal level is adjusted at horizontal plane, make it parallel with guide post (14) axis direction, and make grating ruler reading head (16) and grating scale blade (15) meet relative position requirement in the horizontal direction, with one group of second screw (19), read head support (11) and thrust bearing (4) are fixed together；
(4) step that hockets (2) and step (3), final installation is fixing makes grating ruler reading head (16) parallel with guide post (14) axis, and makes grating ruler reading head (16) and grating scale blade (15) both horizontally and vertically meet relative position requirement；
(5) by the depth of parallelism requirement of rear pattern plate mounting platform (2), thrust bearing mounting platform (5) position and two guide post (14) axis composition planes, the perpendicularity requirement of blade support canned paragraph (10) and supporting section (9), the perpendicularity requirement of read head support canned paragraph (13) and reading head section (12), and adjust read head support (11) direction at horizontal plane, make the blade installed surface on blade support (7) meet depth of parallelism requirement with the read head installed surface on read head support (11).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410127515.8A CN103900482B (en) | 2014-03-31 | 2014-03-31 | Injection machine matched moulds thrust bearing straight-line displacement device for accurately measuring and installation method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410127515.8A CN103900482B (en) | 2014-03-31 | 2014-03-31 | Injection machine matched moulds thrust bearing straight-line displacement device for accurately measuring and installation method thereof |
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| Publication Number | Publication Date |
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| CN103900482A CN103900482A (en) | 2014-07-02 |
| CN103900482B true CN103900482B (en) | 2016-06-29 |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN110954042A (en) * | 2019-12-03 | 2020-04-03 | 中国航空工业集团公司北京航空精密机械研究所 | Linear displacement sensor positioning device |
| CN113624988B (en) * | 2021-08-04 | 2024-06-25 | 中国烟草总公司郑州烟草研究院 | Device and method for calibrating pressing speed of explosion bead intensity detector by adopting grating ruler |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2754865Y (en) * | 2004-12-16 | 2006-02-01 | 仇信华 | Internal mould closing cylinder linking-bar mechanism of plastic injection machine |
| CN102508318A (en) * | 2011-09-30 | 2012-06-20 | 浙江大学 | Precise inclined platform device for static calibration of seismometer |
| CN103317689A (en) * | 2013-05-31 | 2013-09-25 | 宁波京阪工业有限公司 | Die clamping mechanism of injection machine |
| CN103411773A (en) * | 2013-07-17 | 2013-11-27 | 浙江大学宁波理工学院 | High-speed precision ball screw pair reliability testing device and testing method |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2009216451A (en) * | 2008-03-07 | 2009-09-24 | Asahi Kasei E-Materials Corp | Film width measurement method and film width measurement device |
| CN102661709B (en) * | 2012-04-23 | 2014-08-13 | 清华大学 | Large-journey measuring method of moving platform displacement |
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2014
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Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2754865Y (en) * | 2004-12-16 | 2006-02-01 | 仇信华 | Internal mould closing cylinder linking-bar mechanism of plastic injection machine |
| CN102508318A (en) * | 2011-09-30 | 2012-06-20 | 浙江大学 | Precise inclined platform device for static calibration of seismometer |
| CN103317689A (en) * | 2013-05-31 | 2013-09-25 | 宁波京阪工业有限公司 | Die clamping mechanism of injection machine |
| CN103411773A (en) * | 2013-07-17 | 2013-11-27 | 浙江大学宁波理工学院 | High-speed precision ball screw pair reliability testing device and testing method |
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| CN103900482A (en) | 2014-07-02 |
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