WO2008072562A1 - 回転テーブルおよびこの回転テーブルを備えた工作機械 - Google Patents
回転テーブルおよびこの回転テーブルを備えた工作機械 Download PDFInfo
- Publication number
- WO2008072562A1 WO2008072562A1 PCT/JP2007/073651 JP2007073651W WO2008072562A1 WO 2008072562 A1 WO2008072562 A1 WO 2008072562A1 JP 2007073651 W JP2007073651 W JP 2007073651W WO 2008072562 A1 WO2008072562 A1 WO 2008072562A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- load
- input shaft
- power transmission
- plate
- workpiece
- Prior art date
Links
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23Q—DETAILS, COMPONENTS, OR ACCESSORIES FOR MACHINE TOOLS, e.g. ARRANGEMENTS FOR COPYING OR CONTROLLING; MACHINE TOOLS IN GENERAL CHARACTERISED BY THE CONSTRUCTION OF PARTICULAR DETAILS OR COMPONENTS; COMBINATIONS OR ASSOCIATIONS OF METAL-WORKING MACHINES, NOT DIRECTED TO A PARTICULAR RESULT
- B23Q16/00—Equipment for precise positioning of tool or work into particular locations not otherwise provided for
- B23Q16/02—Indexing equipment
- B23Q16/08—Indexing equipment having means for clamping the relatively movable parts together in the indexed position
- B23Q16/10—Rotary indexing
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23Q—DETAILS, COMPONENTS, OR ACCESSORIES FOR MACHINE TOOLS, e.g. ARRANGEMENTS FOR COPYING OR CONTROLLING; MACHINE TOOLS IN GENERAL CHARACTERISED BY THE CONSTRUCTION OF PARTICULAR DETAILS OR COMPONENTS; COMBINATIONS OR ASSOCIATIONS OF METAL-WORKING MACHINES, NOT DIRECTED TO A PARTICULAR RESULT
- B23Q16/00—Equipment for precise positioning of tool or work into particular locations not otherwise provided for
- B23Q16/02—Indexing equipment
- B23Q16/08—Indexing equipment having means for clamping the relatively movable parts together in the indexed position
- B23Q16/10—Rotary indexing
- B23Q16/102—Rotary indexing with a continuous drive
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23Q—DETAILS, COMPONENTS, OR ACCESSORIES FOR MACHINE TOOLS, e.g. ARRANGEMENTS FOR COPYING OR CONTROLLING; MACHINE TOOLS IN GENERAL CHARACTERISED BY THE CONSTRUCTION OF PARTICULAR DETAILS OR COMPONENTS; COMBINATIONS OR ASSOCIATIONS OF METAL-WORKING MACHINES, NOT DIRECTED TO A PARTICULAR RESULT
- B23Q1/00—Members which are comprised in the general build-up of a form of machine, particularly relatively large fixed members
- B23Q1/25—Movable or adjustable work or tool supports
- B23Q1/44—Movable or adjustable work or tool supports using particular mechanisms
- B23Q1/50—Movable or adjustable work or tool supports using particular mechanisms with rotating pairs only, the rotating pairs being the first two elements of the mechanism
- B23Q1/52—Movable or adjustable work or tool supports using particular mechanisms with rotating pairs only, the rotating pairs being the first two elements of the mechanism a single rotating pair
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23Q—DETAILS, COMPONENTS, OR ACCESSORIES FOR MACHINE TOOLS, e.g. ARRANGEMENTS FOR COPYING OR CONTROLLING; MACHINE TOOLS IN GENERAL CHARACTERISED BY THE CONSTRUCTION OF PARTICULAR DETAILS OR COMPONENTS; COMBINATIONS OR ASSOCIATIONS OF METAL-WORKING MACHINES, NOT DIRECTED TO A PARTICULAR RESULT
- B23Q16/00—Equipment for precise positioning of tool or work into particular locations not otherwise provided for
Definitions
- the present invention relates to a rotary table for holding a workpiece and a machine tool including the rotary table.
- Such a rotary table includes a power source, a power transmission mechanism such as a worm and worm wheel mechanism, a table for holding a workpiece, a brake for fixing the position of the table, and the like.
- a power transmission mechanism such as a worm and worm wheel mechanism
- a table for holding a workpiece a brake for fixing the position of the table, and the like.
- Patent Document 1 JP-A-10-220425
- Patent Document 2 Japanese Patent Application Laid-Open No. 2001-27074
- the present invention has been made in view of the above-described problems, and an object of the present invention is to shorten the time required for workpiece positioning, machining, and workpiece positioning again. Proposed rotating table and machine tool.
- a rotary table includes a drive source, a workpiece holding unit that holds a workpiece processed by a tool, a power transmission mechanism that can transmit power from the drive source to the workpiece holding unit, and a load. And a load mechanism that can operate the power transmission mechanism in a state of being applied and that can apply a predetermined load to the power transmission mechanism during machining of the workpiece.
- the power transmission mechanism includes an input shaft to which power from a power source is transmitted, and a torque amplification mechanism that amplifies torque from the input shaft and transmits the amplified torque to the work holding unit, and the load mechanism receives input.
- the torque amplification mechanism is a roller gear mechanism.
- the torque amplification mechanism is a ball gear mechanism.
- the load mechanism includes a plate-like member provided on the input shaft, a contact member that contacts the plate-like member, and a biasing member that presses the plate-like member toward the contact member.
- a brake mechanism different from the load mechanism is further provided.
- a machine tool according to the present invention includes the rotary table described above.
- the power transmission mechanism in a state where the load mechanism applies a load to the power transmission mechanism, the power transmission mechanism is driven to position the workpiece at a predetermined position.
- the load is applied to the power transmission mechanism by the load mechanism. Therefore, even if a cutting force is applied to the workpiece, the displacement of the workpiece holding portion is suppressed. It is. In other words, the time required from the positioning of the workpiece to the machining without the switching time of the ON / OFF operation of the brake mechanism as in the prior art can be reduced.
- FIG. 1 is a cross-sectional view of a rotary table device according to the present embodiment.
- FIG. 2 is a cross-sectional view taken along the line II-II in FIG.
- FIG. 3 is a front view of the plate 17.
- FIG. 4 is a cross-sectional view showing a first modification of the turntable according to the present embodiment.
- FIG. 5 is a side sectional view showing a second modification of the turntable according to the present embodiment.
- FIG. 6 is a cross-sectional view showing a detailed configuration in the vicinity of the ball.
- FIG. 7 is a cross-sectional view showing a third modification of the turntable according to the present embodiment. Explanation of symbols
- FIG. 1 is a cross-sectional view of the turntable device according to the present embodiment
- FIG. 2 is a cross-sectional view taken along line II-II in FIG.
- the rotary table device 1 includes a motor (drive source) 2, a table (work holding unit) 4 that holds a workpiece W processed by a tool (not shown),
- the power transmission mechanism 3 that transmits the power from the motor 2 to the table 4 and the power transmission mechanism 3 can be operated in a state where a load is applied.
- a load mechanism 30 that applies a constant load!
- the motor 2 When the motor 2 is driven, the power from the motor 2 is transmitted to the table 4 shown in FIG. 2 by the power transmission mechanism 3, and the table 4 rotates. Then, the driving of the motor 2 is stopped, and the table 4 is stopped so that the workpiece W is located at a predetermined position.
- the load mechanism 30 continues to apply a load to the power transmission mechanism 3 even when the power transmission mechanism 3 is in operation and when it is stopped. For this reason, even when the rotation of the table 4 is stopped, a load is applied to the power transmission mechanism 3, and even if an external force such as a cutting force is applied to the table 4, the rotation of the table 4 is prevented. And can maintain the table 4 in a predetermined position.
- the load mechanism 30 that constantly applies a load to the power transmission mechanism 3 holds the table 4 at the time of machining, so that an O ⁇ OFF operation such as a brake mechanism is unnecessary as in a conventional rotary table.
- the time for operating the brake mechanism can be omitted.
- the power transmission mechanism 3 is housed in a casing 20, and the power transmission mechanism 3 includes a gear mechanism (first torque amplification mechanism) 23 that transmits power from the motor 2 to the input shaft 11, and a tape mechanism. It is equipped with a roller cam mechanism (second torque amplification mechanism) 22 that transmits power from the input shaft 11 to the provided output shaft 12.
- the gear mechanism 23 includes a bevel gear 10A provided on the rotating shaft 10 of the motor 2, and an input shaft 11 having a gear portion 15 corresponding to the bevel gear 10A.
- the reduction ratio of the gear mechanism 23 (the rotational speed of the rotary shaft 10: the rotational speed of the input shaft 11) is, for example, 10: 1.
- the torque of the rotary shaft 10 is amplified and applied to the input shaft 11. Communicated.
- the roller cam mechanism 22 includes a cylindrical output shaft 12, a plurality of cam followers 13 rotatably provided on the outer peripheral surface of the output shaft 12, and a composite formed on the outer surface of the input shaft 11. With a number of cam grooves 14!
- a plurality of cam grooves 14 are arranged in the axial direction of the input shaft 11, and extend spirally on the outer peripheral surface of the input shaft 11. For example, as shown in FIG. 1, when the input shaft 11 rotates in the rotation direction R1, the output shaft 12 rotates in the rotation direction R2.
- the cam follower 13 and the input shaft 11 are preliminarily brought into pressure contact to apply preload.
- the cam follower 13 is rotatably provided and transmits power from the input shaft 11 to the output shaft 12 while rotating, so that friction between the cam groove 14 and the cam follower 13 is reduced.
- the roller cam mechanism 22 can transmit the power from the input shaft 11 to the output shaft 12 with high accuracy, and can accurately position the table 4 shown in FIG. In particular, when the table 4 stops and the workpiece W is machined, it is possible to suppress the table 4 from being displaced by the backlash between the cam follower 13 and the cam groove 14, so Bull 4 can be prevented from being displaced.
- the reduction ratio of the roller cam mechanism 22 (the rotational speed of the input shaft 11: the rotational speed of the output shaft 12) is, for example, 9: 1, and the torque from the input shaft 11 is amplified and applied to the output shaft 12. Communicated.
- the load mechanism 30 is provided on the input shaft 11, and the load transmitted to the output shaft 12 is amplified by the roller cam mechanism 22 and becomes larger than the load applied to the input shaft 11 by the load mechanism 30. Therefore, it is possible to receive the cutting force applied to the workpiece W when machining the workpiece W shown in FIG. 2, and to control the displacement of the position of the positioned table 4 by the cutting force. I'll do it.
- the load mechanism 30 can apply a larger torque to the input shaft 11 than the torque caused by the cutting force applied to the workpiece W. Therefore, the displacement of the table 4 due to the cutting force can be suppressed, and high-precision machining is possible even when performing continuous rotary cutting or the like.
- the power transmission mechanism 3 is provided with the roller cam mechanism 22 in which the backlash is suppressed on the downstream side of the power transmission path from the load mechanism 30, so that the rotation of the input shaft 11 is stopped by the load mechanism 30.
- the roller cam mechanism 22 is provided on the downstream side of the power transmission path from the load mechanism 30, the load from the load mechanism 30 can be amplified. The ability to suppress misalignment is high, and high-precision machining is possible.
- the gear mechanism 23 having more play than the roller cam mechanism 22 is provided upstream of the load mechanism 30 in the power transmission direction. Therefore, when the workpiece W is machined, the load mechanism 30 can fix the movement of the portion of the power transmission mechanism 3 located downstream from the gear mechanism 23, and the backlash of the gear mechanism 23 is fixed to the table 4. Does not affect the position.
- the load mechanism 30 By amplifying the load of the load mechanism 30 by the roller cam mechanism 22, the load mechanism 30 can be made more compact than when the load mechanism 30 is provided on the output shaft 12.
- the urging force applied to the input shaft 11 by the load mechanism 30 is larger than the cutting force transmitted through the roller cam mechanism 22 during processing that is smaller than the power transmitted to the input shaft 11 by the gear mechanism 23. It is assumed that. [0031] For example, when the output of the motor 2 is 4N'm and the reduction ratio 10: 1 of the gear mechanism 23 is 10: 1, the input shaft 11 can output 40N'm. Therefore, even if the load mechanism 30 applies a load of 8 to 12 N′m, an output of 28 to 32 N′m is possible. Also, when the reduction ratio of the roller cam mechanism 22 is 9: 1, the load mechanism 30 can withstand loads from 72 N'm to 108 N'm by applying a load of 8 to 12 N'm. .
- the load mechanism 30 includes a disk-shaped plate (plate member) 17 fixed to the outer peripheral surface of the input shaft 11, a contact plate (contact member) 18 provided in the casing 20 and in contact with the plate 17, A plate panel (biasing member) 16 that presses the plate 17 toward the contact plate 18 is provided.
- the disc spring 16 is in contact with a portion of the side surface of the plate 17 located on the outer peripheral edge side. For this reason, the friction generated between the side surface of the plate 17 and the contact plate 18 increases toward the outer peripheral edge side of the plate 17, and the force that increases the load torque applied to the plate 17 even with a small frictional force. it can. As a result, the dish panel 16 can be made small and compact, and the apparatus can be made compact.
- the output shaft 12 is provided with a plurality of bearings such as ball bearings for rotatably supporting the output shaft 12. In order to reduce the resistance of the bearings, lubricating oil is supplied to the bearings. Yes.
- FIG. 3 is a front view of the plate 17. As shown in FIG. 3, on the side surface of the plate 17 facing the contact plate 18 shown in FIG. 1, a groove portion (concave portion) 17a extending in the radial direction is formed. A contact surface (convex portion) 17b that contacts the contact plate 18 is located in a portion adjacent to the groove portion 17a.
- the lubricating oil that has entered between the contact surface 17b and the contact plate 18 is discharged outward from the groove portion 17a. For this reason, it is possible to suppress the formation of an oil film between the contact surface 17b and the contact plate 18, and the friction between the contact surface 17b and the contact plate 18 can be ensured.
- the shape of the groove 17a is not limited to the example shown in FIG.
- FIG. 4 is a cross-sectional view showing a first modification of the turntable according to the present embodiment.
- the rotary table device 1 includes an input shaft 11 that reaches the outside of the casing 20 and a brake that is provided outside the casing 20 and can suppress the rotation of the input shaft 11.
- the brake mechanism 100 applies a load to the input shaft 11 1 separately when a cutting force is applied to the table 4 so that the rotation of the input shaft 11 1 cannot be stopped by the load of the load mechanism 30. The displacement of the input shaft 1 1 can be suppressed.
- the brake mechanism 100 includes a cylindrical brake member 101 that tightens the outer surface of the input shaft 11 positioned outside the casing 20, and a housing 102 that is disposed on the outer periphery of the brake member 101.
- An oil supply chamber 105 is formed between the brake member 101 and the casing 102, and an oil supply pipe 103 is connected to the oil supply chamber 105.
- the brake mechanism 100 is driven only when machining with a large load force S is applied to the workpiece.
- the load mechanism 30 is supported only to perform the machining. Processing time can be reduced.
- FIG. 5 is a side sectional view showing a second modification of the turntable according to the present embodiment.
- the power transmission mechanism 3 includes a gear mechanism (first torque amplification mechanism) 23 that transmits the power from the motor 2 to the input shaft 11 1 and the power from the input shaft 11 1 as a table.
- a ball gear mechanism (third torque amplification mechanism) 122 that transmits to the output shaft provided with
- the ball gear mechanism 122 is formed on the outer surface of the output shaft 12 formed in a cylindrical shape, a ball (spherical member) 1 13 rotatably provided on the output shaft 12, and the input shaft 11 Cam groove 1 14.
- FIG. 6 is a cross-sectional view showing a detailed configuration in the vicinity of the ball 113.
- the ball gear mechanism 122 is provided in an adjustment member 140b provided in a recess 140c formed in the output shaft 12, and in a recess 143 formed in the adjustment member 140b.
- a ball 1 1 3, an adjustment member 140 b, and a plate-like member 149 such as a shim are provided.
- a screw portion 162 is formed on the peripheral surface of the adjustment member 140b, and a screw portion 163 that is screwed with the screw portion 162 is formed on the inner peripheral surface of the recess 140c.
- the adjustment member 140b is capable of adjusting the position of the output shaft 12 in the radial direction, By adjusting the position of the adjusting member 140b, the force S is pressed by pressing the ball 113 against the cam groove 114.
- the recess 143 of the adjustment member 140b is formed on the end surface of the adjustment member 140b located radially outward of the output shaft 12.
- the ball 113 is rotatable in the recess 143 and is accommodated in the recess 143 by a drop-off prevention portion 141 provided at the opening edge of the recess 143.
- the ball 113 can rotate in the recess 143, friction generated between the ball 113 and the cam groove 114 can be reduced, and power from the input shaft 11 can be used without waste. Transmitting power to S
- FIG. 7 is a cross-sectional view showing a third modification of the turntable according to the present embodiment.
- the load mechanism 30 includes an annular contact plate 18 fixed to the outer peripheral surface of the input shaft 11 and a hydraulic cylinder 160 provided in the casing 20.
- the hydraulic cylinder 160 includes a rod 161 that can be moved forward and backward toward the contact plate 18, a cylinder portion 165 that moves the rod 161 forward and backward with the hydraulic pressure of oil (medium) supplied therein, and a cylinder portion.
- An oil supply pipe (oil supply mechanism) 164 capable of supplying oil is provided in 165.
- the load applied to the input shaft 11 can be selectively eliminated.
- the table 4 can be selectively rotated at a high speed, and the processing time can be shortened.
- the table 4 can be fixed at the set position.
- the frictional force between the rod 161 and the contact plate 18 can be adjusted, and the load applied to the input shaft 11 can be adjusted. For this reason, for example, as in the example shown in FIG. 1, the workpiece W is processed while the load that can be rotated by the power from the motor 2 is applied to the input shaft 11, and the table 4 is By increasing the load applied to the input shaft 11 when positioned at a predetermined position, the position of the tape spool 4 can be fixed and the displacement of the workpiece W can be suppressed.
- the present invention is suitable for a rotary table and a machine tool including the rotary table.
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Machine Tool Units (AREA)
- Machine Tool Positioning Apparatuses (AREA)
Abstract
Description
Claims
Priority Applications (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US12/439,119 US20090256298A1 (en) | 2006-12-13 | 2007-12-07 | Turntable and working machine with such turntable |
DE112007002596T DE112007002596T5 (de) | 2006-12-13 | 2007-12-07 | Drehtisch und Bearbeitungsmaschine mit solch einem Drehtisch |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2006-336223 | 2006-12-13 | ||
JP2006336223A JP2008142874A (ja) | 2006-12-13 | 2006-12-13 | 回転テーブルおよびこの回転テーブルを備えた工作機械 |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2008072562A1 true WO2008072562A1 (ja) | 2008-06-19 |
Family
ID=39511582
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/JP2007/073651 WO2008072562A1 (ja) | 2006-12-13 | 2007-12-07 | 回転テーブルおよびこの回転テーブルを備えた工作機械 |
Country Status (7)
Country | Link |
---|---|
US (1) | US20090256298A1 (ja) |
JP (1) | JP2008142874A (ja) |
KR (1) | KR20090094801A (ja) |
CN (1) | CN101534992A (ja) |
DE (1) | DE112007002596T5 (ja) |
TW (1) | TW200902223A (ja) |
WO (1) | WO2008072562A1 (ja) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US8309308B2 (en) | 2004-07-29 | 2012-11-13 | Lumora Limited | Method for determining the amount of template nucleic acid present in a sample |
CN105157976A (zh) * | 2015-09-24 | 2015-12-16 | 江西洪都航空工业集团有限责任公司 | 一种飞机载荷机构特性测试装置 |
Families Citing this family (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP5607690B2 (ja) * | 2012-08-01 | 2014-10-15 | ファナック株式会社 | 回転テーブルを備えた工作機械 |
JP5855706B2 (ja) * | 2014-06-16 | 2016-02-09 | ファナック株式会社 | 回転テーブルを備えた工作機械 |
JP7093991B2 (ja) * | 2018-02-26 | 2022-07-01 | パスカルエンジニアリング株式会社 | 回転軸のブレーキ装置及びそのブレーキ装置を備えたインデックステーブル |
CN108907645A (zh) * | 2018-07-25 | 2018-11-30 | 格力电器(杭州)有限公司 | 一种双层旋转工艺板 |
JP7357349B2 (ja) * | 2019-10-31 | 2023-10-06 | パスカルエンジニアリング株式会社 | 回転支持装置、工作機械、および工具状態監視方法 |
CN114012458A (zh) * | 2021-11-05 | 2022-02-08 | 重庆大学 | 一种组合式无侧隙精密大扭矩回转台 |
Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
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JPH02167650A (ja) * | 1988-12-21 | 1990-06-28 | Komatsu Ltd | 複合工作機械のターンテーブル装置 |
JPH1158181A (ja) * | 1997-08-19 | 1999-03-02 | Tsudakoma Corp | 割り出し装置とその駆動方法 |
Family Cites Families (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB2175274A (en) * | 1985-04-19 | 1986-11-26 | Shinn I Chern | Improved screw jack |
US5085407A (en) * | 1989-11-17 | 1992-02-04 | Lonon Edward M | Motorized jack |
KR920005683Y1 (ko) * | 1990-06-28 | 1992-08-20 | 주식회사 비앤앨 | 자동차용 전동잭 |
JP3129669B2 (ja) | 1997-02-05 | 2001-01-31 | 津田駒工業株式会社 | 機械加工用回転テーブルのクランプ装置 |
JP4741721B2 (ja) | 2000-03-31 | 2011-08-10 | 株式会社北川鉄工所 | 工作用割出しテーブルのクランプ構造 |
US6305678B1 (en) * | 2000-06-02 | 2001-10-23 | Hammersmith Mfg. & Sales, Inc. | Welder positioner |
US20090020934A1 (en) * | 2005-09-29 | 2009-01-22 | W.P.R.W.M.D.M., L.L.C. | Equipment handling apparatus and system |
US7472889B1 (en) * | 2007-10-05 | 2009-01-06 | Prather Thomas J | Vehicle lift system |
-
2006
- 2006-12-13 JP JP2006336223A patent/JP2008142874A/ja not_active Withdrawn
-
2007
- 2007-12-07 DE DE112007002596T patent/DE112007002596T5/de not_active Withdrawn
- 2007-12-07 US US12/439,119 patent/US20090256298A1/en not_active Abandoned
- 2007-12-07 KR KR1020097005223A patent/KR20090094801A/ko not_active Application Discontinuation
- 2007-12-07 WO PCT/JP2007/073651 patent/WO2008072562A1/ja active Application Filing
- 2007-12-07 CN CNA200780042003XA patent/CN101534992A/zh active Pending
- 2007-12-11 TW TW096147207A patent/TW200902223A/zh unknown
Patent Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH02167650A (ja) * | 1988-12-21 | 1990-06-28 | Komatsu Ltd | 複合工作機械のターンテーブル装置 |
JPH1158181A (ja) * | 1997-08-19 | 1999-03-02 | Tsudakoma Corp | 割り出し装置とその駆動方法 |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US8309308B2 (en) | 2004-07-29 | 2012-11-13 | Lumora Limited | Method for determining the amount of template nucleic acid present in a sample |
CN105157976A (zh) * | 2015-09-24 | 2015-12-16 | 江西洪都航空工业集团有限责任公司 | 一种飞机载荷机构特性测试装置 |
Also Published As
Publication number | Publication date |
---|---|
DE112007002596T5 (de) | 2009-12-10 |
KR20090094801A (ko) | 2009-09-08 |
JP2008142874A (ja) | 2008-06-26 |
US20090256298A1 (en) | 2009-10-15 |
CN101534992A (zh) | 2009-09-16 |
TW200902223A (en) | 2009-01-16 |
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