CN102003925B - Motion position precision measuring device of multi-blade grating blades - Google Patents
Motion position precision measuring device of multi-blade grating blades Download PDFInfo
- Publication number
- CN102003925B CN102003925B CN201010513049A CN201010513049A CN102003925B CN 102003925 B CN102003925 B CN 102003925B CN 201010513049 A CN201010513049 A CN 201010513049A CN 201010513049 A CN201010513049 A CN 201010513049A CN 102003925 B CN102003925 B CN 102003925B
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- guide rail
- slide bar
- slide
- positioning
- measuring device
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Abstract
The invention provides a motion position precision measuring device of multi-blade grating blades, and relates to the measuring technology. The measuring device comprises a positioning base of the measuring device, a fixed guide rail and a moving guide rail for forming a moving guide rail pair, and a slide bar and a slide seat for forming slide fit, wherein, the slide bar is equipped with a front positioning check block and a rear positioning check block; the slide seat is equipped with a slide bar positioning handle and a guide rail positioning handle; and the end head of the slide bar is equipped with a dial indicator. In the invention, by simply operating the moving guide rail and positioning the check blocks, dozens of the multi-blade grating blades are respectively subject to motion positioning measurement and displacement measurement, and accumulated errors of screw pitch of blade drive screws are measured, thus realizing accurate and fast measurement; and by adopting the dial indicator, data can be more intuitively and easily obtained.
Description
Technical field
The present invention relates to measuring technique.
Background technology
The blade movement precision of multi-leaf optical grating is one of its most important characteristic; Accuracy (conformal degree) by the formed irradiation field of blade movement; Be directly connected to the radiation exposure shape and the dose absorption size in patient's focus zone; More be directly connected to protection to greatest extent, reach the Expected Results of tumour radiotherapy human normal tissue and sensitive organization.Therefore in the manufacturing of multi-leaf optical grating with use link, the measurement of blade movement accuracy value is just seemed particularly important.
Owing to blade quantity in the multi-leaf optical grating many (tens nearly hundred), gauge is little and the blade front end has been made arc for reducing penumbra; Brought difficulty for the kinematic accuracy measurement of blade; Waste time and energy with normal conventional method and general gage measuring, be difficult to obtain fast accurate leaf position data.Secondly; Manufacturing field at multi-leaf optical grating; For improving the kinematic accuracy of blade, must carry out The compensation of pitch error to the screw rod that drives each sheet blade, particularly in the batch process of multi-leaf optical grating; How accurately to obtain the cumulative pitch error offset fast, be the key of blade high precision operation location.
Summary of the invention
Technical matters to be solved by this invention is; Provide a kind of economy, fast, the multi-leaf optical grating blade movement positional precision measurement mechanism of high precision, easy operating; With satisfy multi-leaf optical grating use and make in to the simple and easy quick high accuracy measurement requirement of blade movement site error, solve the difficult problem of multi-leaf optical grating blade movement precision measure.
The technical scheme that the present invention solve the technical problem employing is; Multi-leaf optical grating blade movement positional precision measurement mechanism; Comprise fixed guide, moving guide rail that the measurement mechanism positioning base is secondary with forming moving guide rail, form the slide bar and the slide that are slidingly matched, prelocalization piece and back locating piece are installed on the slide bar; Slide is provided with slide bar position fixing knob, guide rail position fixing knob, and the termination of slide bar is provided with the dial gauge mounting structure.
Said moving guide rail pair is the dovetail guide type.Slide bar position fixing knob and guide rail position fixing knob are arranged on the slide through threaded through hole.
Further say, also comprise dial gauge, dial gauge is arranged on the end of slide bar through the open flume type clamping structure.
The invention has the beneficial effects as follows, move and block location, can carry out motion positions measurement, displacement measurement to tens blades of multi-leaf optical grating respectively and, realize measuring accurately fast the accumulative pitch error measurement of vane drive screw rod through simple operations.The use of percentage gauge outfit, it is easily directly perceived more that data are obtained.
Below in conjunction with accompanying drawing and embodiment the present invention is further described.
Description of drawings
Fig. 1 is embodiment of the invention structural representation (side-looking).
Fig. 2 is a vertical view of the present invention.
Fig. 3, the 4th, slide bar end percentage gauge outfit mounting structure synoptic diagram.
Fig. 5 is an embodiment of the invention schematic three dimensional views.
Label among the figure: 1, base 2, fixed guide 3, moving guide rail
4, slide bar 5, slide 6, prelocalization block 7, back position block
8, guide rail position fixing knob 9, slide bar position fixing knob 10, dial gauge.
Embodiment
Referring to Fig. 1～5.
Multi-leaf optical grating blade movement positional precision measurement mechanism; Comprise first guide rail 2, second guide rail 3 that measurement mechanism positioning base 1 is secondary with forming moving guide rail; Slide bar 4 and slide 5 that formation is slidingly matched; Prelocalization block 6 and back position block 7 are installed on the slide bar 4, and the termination of slide bar 4 is equipped with dial gauge 10.Said moving guide rail pair is the dovetail guide type.Slide bar position fixing knob 8 is arranged on the slide 5 through threaded through hole with guide rail position fixing knob 9.
Fixed guide 2 is set on the base 1 of the present invention also is rigidly connected with it, the slide 5 that is being rigidly connected on the moving guide rail 3, slide bar 4 can move forward and backward with respect to slide 5, and its moving range is determined by former and later two position blocks 6,7 adjustment that are enclosed within on the slide bar.Be respectively arranged with locking position handle 8,9 on moving guide rail 3 and the slide 5, in measurement, slide bar 4 and guide rail 3 done the relevant position locking.
The end of slide bar is the open flume type clamping structure, can do up and down and the corner adjustment the percentage gauge outfit 10 that is installed on the slide bar fast, to be convenient for measuring and reading.
Instructions has clearly been explained principle of the present invention and necessary technology details, and those of ordinary skill can be implemented according to instructions.Interest field of the present invention is not limited to the disclosed embodiment of instructions, and the embodiment of other changes also belongs to interest field of the present invention.
Claims (4)
1. multi-leaf optical grating blade movement positional precision measurement mechanism; It is characterized in that; Comprise measurement mechanism positioning base (1) and form moving guide rail secondary fixed guide (2), moving guide rail (3), form the slide bar (4) and the slide (5) that are slidingly matched, prelocalization block (6) and back position block (7) are installed on the slide bar (4); Slide (5) is provided with slide bar position fixing knob (9), guide rail position fixing knob (8), and the termination of slide bar (4) is provided with the dial gauge mounting structure.
2. multi-leaf optical grating blade movement positional precision measurement mechanism as claimed in claim 1 is characterized in that, said moving guide rail pair is the dovetail guide type.
3. multi-leaf optical grating blade movement positional precision measurement mechanism as claimed in claim 1 is characterized in that slide bar position fixing knob (9) and guide rail position fixing knob (8) are arranged on the slide (5) through threaded through hole.
4. multi-leaf optical grating blade movement positional precision measurement mechanism as claimed in claim 1 is characterized in that also comprise dial gauge (10), dial gauge (10) is arranged on the end of slide bar through the open flume type clamping structure.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201010513049A CN102003925B (en) | 2010-10-20 | 2010-10-20 | Motion position precision measuring device of multi-blade grating blades |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201010513049A CN102003925B (en) | 2010-10-20 | 2010-10-20 | Motion position precision measuring device of multi-blade grating blades |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102003925A CN102003925A (en) | 2011-04-06 |
| CN102003925B true CN102003925B (en) | 2012-09-05 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201010513049A Expired - Fee Related CN102003925B (en) | 2010-10-20 | 2010-10-20 | Motion position precision measuring device of multi-blade grating blades |
Country Status (1)
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| CN (1) | CN102003925B (en) |
Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104359373A (en) * | 2014-11-09 | 2015-02-18 | 沈阳黎明航空发动机(集团)有限责任公司 | Detecting device for chord length of multi-section of stator blade |
| CN106225649B (en) * | 2016-08-09 | 2018-10-19 | 中国科学院长春光学精密机械与物理研究所 | The measuring device and its measurement method of ruling tool for grating pitch angle |
| CN106247907B (en) * | 2016-09-07 | 2018-10-19 | 中国科学院长春光学精密机械与物理研究所 | The measuring device and its measurement method of grating scribing knife orientation angle |
| CN109323855A (en) * | 2018-11-09 | 2019-02-12 | 清华大学 | Based on the polynary beam limiting device mechanical test device of the radiotherapy of light curtain |
| CN109745634B (en) * | 2018-12-25 | 2020-09-25 | 江苏海明医疗器械有限公司 | Multi-blade collimator testing device for medical accelerator |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201837330U (en) * | 2010-10-20 | 2011-05-18 | 成都奇林科技有限责任公司 | Precision measurement device for movement positions of blades of multi-blade grating |
-
2010
- 2010-10-20 CN CN201010513049A patent/CN102003925B/en not_active Expired - Fee Related
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201837330U (en) * | 2010-10-20 | 2011-05-18 | 成都奇林科技有限责任公司 | Precision measurement device for movement positions of blades of multi-blade grating |
Non-Patent Citations (3)
| Title |
|---|
| 李智华.ELEKTA多叶准直器到位精度的验证.《医疗装备》.2009,(第8期),第135-137页. * |
| 靳岚等.基于DSP 的多叶准直器叶片位置控制精度的研究.《智能控制技术》.2008,第37卷(第7期),第61-63、68页. * |
| 鞠忠建等.用二维电离室矩阵验证多叶准直器叶片到位精度.《中华放射肿瘤学杂志》.2006,第15卷(第4期),第335-338页. * |
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| CN102003925A (en) | 2011-04-06 |
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