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Wiki source code of Load frame

Last modified by fwilde on 2025/04/28 17:23
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1 {{toc/}}
2
3 = Overview =
4
5 [[image:attach:DSC_0006.JPG||width="400"]]
6
7
8 * Forces up to 1 kN (both pushing or pulling)
9 * Load cells 20N, 50N, 100N, 200N, 500N and 1000N available
10 * Fully integrated into control and logging system
11
12 = Actuator =
13
14 [[image:attach:DSC_0020.JPG||height="250"]][[image:attach:DSC_0021.JPG||height="250"]]
15
16 (% class="wrapped" %)
17 |=(((
18 PIMicos MA-35
19 )))|=(((
20
21 )))
22 |(((
23 max. load (in travel direction)
24 )))|(((
25 1000N
26 )))
27 |(((
28 Travel range
29 )))|(((
30 45 mm
31 )))
32 |(((
33 max. speed
34 )))|(((
35 5000 µm/s
36 )))
37 |(((
38 Step width
39 )))|(((
40 1/20 µm
41 )))
42 |(((
43 fine pitch thread
44 )))|(((
45 (% class="content-wrapper" %)
46 (((
47 M(8 x 1.0) x 45
48 )))
49 )))
50
51 = Load cells =
52
53 Two types of load cells are available with different diameters with the following force range
54
55 (% class="relative-table wrapped" style="width:23.2261%" %)
56 |(% colspan="2" %)(((
57 (% class="content-wrapper" %)
58 (((
59 [[image:attach:DSC_0031.JPG||height="250" style="vertical-align:middle"]]
60 )))
61 )))
62 |=(% style="text-align: center;" %)(((
63 large
64 )))|=(% style="text-align: center;" %)(((
65 small
66 )))
67 |(% style="text-align:center" %)(((
68 20 N
69 )))|(% style="text-align:center" %)(((
70 -
71 )))
72 |(% style="text-align:center" %)(((
73 50 N
74 )))|(% style="text-align:center" %)(((
75 -
76 )))
77 |(% style="text-align:center" %)(((
78 100 N
79 )))|(% style="text-align:center" %)(((
80 -
81 )))
82 |(% style="text-align:center" %)(((
83 200 N
84 )))|(% style="text-align:center" %)(((
85 200 N
86 )))
87 |(% style="text-align:center" %)(((
88 -
89 )))|(% style="text-align:center" %)(((
90 500 N
91 )))
92 |(% style="text-align:center" %)(((
93 -
94 )))|(% style="text-align:center" %)(((
95 1000 N
96 )))
97 |(((
98 thread: M8 (max  len 15 mm)
99 )))|(((
100 thread: M4 (max len 6 mm)
101 )))
102
103 = Load frame assembly =
104
105 Considering different applications (high forces, low forces, pushing or pulling) the assembly follows slightly different paths. Generally, assembling the load frame can be broken down into these steps:
106
107 * Install a base plate on the rotation stage (use spacers, decide which plate to use)
108 * Mount load cell on base plate with desired pin or clamp (depending on push or pull experiments)
109 * Mount sample tube (choose the tube type according to your application)
110 * Mount pusher
111
112 == Large load cell installation ==
113
114 For the large load cell a specific base plate has to be used
115
116 (% class="wrapped" %)
117 |(% style="text-align:center" %)(((
118 (% class="content-wrapper" %)
119 (((
120 [[image:attach:DSC_0032.JPG||alt="Base plate with load cell" height="250" title="Base plate with load cell"]]
121 )))
122 )))|(% style="text-align:center" %)(((
123 (% class="content-wrapper" %)
124 (((
125 [[image:attach:DSC_0033.JPG||height="250"]]
126 )))
127 )))
128 |(% style="text-align:center" %)(((
129 Base plate with load cell
130 )))|(% style="text-align:center" %)(((
131 Load cell with pin (M5 thread)
132 )))
133
134 Mount bridge and guide - there are two different types of tube, so assembly depends on your choice of tube:
135
136 === Tube with thread ring ===
137
138 (% class="wrapped" %)
139 |(% style="text-align:center" %)(((
140 (% class="content-wrapper" %)
141 (((
142 [[image:attach:DSC_0034.JPG||height="250"]]
143 )))
144 )))|(% style="text-align:center" %)(((
145 (% class="content-wrapper" %)
146 (((
147 [[image:attach:DSC_0035.JPG||height="250"]]
148 )))
149 )))|(% style="text-align:center" %)(((
150 (% class="content-wrapper" %)
151 (((
152 [[image:attach:DSC_0036.JPG||height="250"]]
153 )))
154 )))
155 |(% style="text-align:center" %)(((
156 Bridge
157 )))|(% style="text-align:center" %)(((
158 Brigde and pin guide
159 )))|(% style="text-align:center" %)(((
160 Tube with thread ring
161 )))
162
163 === Tube with internal thread ===
164
165 (% class="wrapped" %)
166 |(% style="text-align:center" %)(((
167 (% class="content-wrapper" %)
168 (((
169 [[image:attach:DSC_0034.JPG||height="250"]]
170 )))
171 )))|(% style="text-align:center" %)(((
172 (% class="content-wrapper" %)
173 (((
174 [[image:attach:DSC_0037.JPG||thumbnail="true" height="250"]]
175 )))
176 )))|(% style="text-align:center" %)(((
177 (% class="content-wrapper" %)
178 (((
179 [[image:attach:DSC_0038.JPG||height="250"]]
180 )))
181 )))
182 |(% style="text-align:center" %)(((
183 Bridge
184 )))|(% style="text-align:center" %)(((
185 Bridge and pin guide
186 )))|(% style="text-align:center" %)(((
187 Tube with internal thread
188 )))
189
190 === Load cell pin for pulling ===
191
192 (% class="wrapped" %)
193 |(% colspan="2" %)(((
194 (% class="content-wrapper" %)
195 (((
196 [[image:attach:loadcell_pin_large.JPG||height="250"]]
197 )))
198 )))
199 |(((
200 Total length
201 )))|(((
202 56 mm
203 )))
204 |(((
205 Thread at load cell
206 )))|(((
207 M8 x 6
208 )))
209 |(((
210 Thread top part
211 )))|(((
212 M5 x 14
213 )))
214 |(((
215 Pin guide in brigde diameter
216 )))|(((
217 6 mm
218 )))
219
220 == Small load cell installation ==
221
222 For the small load cell a specific base plate has to be used
223
224 (% class="wrapped" %)
225 |(% style="text-align:center" %)(((
226 (% class="content-wrapper" %)
227 (((
228 [[image:attach:DSC_0039.JPG||height="250"]]
229 )))
230 )))|(% style="text-align:center" %)(((
231 (% class="content-wrapper" %)
232 (((
233 [[image:attach:DSC_0040.JPG||height="250"]]
234 )))
235 )))
236 |(% style="text-align:center" %)(((
237 Base plate with load cell
238 )))|(% style="text-align:center" %)(((
239 Load cell with pin used for pulling
240 )))
241
242 Mount pin guide and bridge - there are two different types of tube, so assembly depends on your choice of tube:
243
244 === Tube with thread ring ===
245
246 (% class="wrapped" %)
247 |(((
248 (% class="content-wrapper" %)
249 (((
250 [[image:attach:DSC_0041.JPG||height="250"]]
251 )))
252 )))|(((
253 (% class="content-wrapper" %)
254 (((
255 [[image:attach:DSC_0042.JPG||height="250"]]
256 )))
257 )))
258 |(((
259 Pin guide, no bridge necessary
260
261 Distance top load cell - top bridge surface: 23.5mm (+ 6 mm thread of load cell)
262
263 For own
264 )))|(((
265 Tube with thread ring
266 )))
267
268 === Tube with internal thread ===
269
270 (% class="wrapped" %)
271 |(% style="text-align:center" %)(((
272 (% class="content-wrapper" %)
273 (((
274 [[image:attach:DSC_0043.JPG||height="250"]]
275 )))
276 )))|(% style="text-align:center" %)(((
277 (% class="content-wrapper" %)
278 (((
279 [[image:attach:DSC_0044.JPG||height="250"]]
280 )))
281 )))|(% style="text-align:center" %)(((
282 (% class="content-wrapper" %)
283 (((
284 [[image:attach:DSC_0045.JPG||height="250"]]
285 )))
286 )))|(% style="text-align:center" %)(((
287 (% class="content-wrapper" %)
288 (((
289 [[image:attach:DSC_0046.JPG||height="250"]]
290 )))
291 )))
292 |(% style="text-align:center" %)(((
293 Pin guide
294 )))|(% style="text-align:center" %)(((
295 Bridge
296 )))|(% style="text-align:center" %)(((
297 Optionally: insert push pin
298 )))|(% style="text-align:center" %)(((
299 Tube with internal thread
300 )))
301
302 === Load cell pin for pulling ===
303
304 (% class="wrapped" %)
305 |(% colspan="2" %)(((
306 (% class="content-wrapper" %)
307 (((
308 [[image:attach:loadcell_pin_small.JPG||height="250"]]
309 )))
310 )))
311 |(((
312 Total length
313 )))|(((
314 80 mm
315 )))
316 |(((
317 Thread at load cell
318 )))|(((
319 M4 x 4
320 )))
321 |(((
322 Thread top part
323 )))|(((
324 M5 x 35
325 )))
326 |(((
327 Pin guide in brigde diameter
328 )))|(((
329 6 mm
330 )))
331
332 = Tubes =
333
334 {{info title="Tubes"}}
335 There are different tubes available at the beamline. Should the tube be unsuitable for your sample, a new tube can be manufactured. Please contact the beamline staff well in advance of your beamtime.
336 {{/info}}
337
338 (% class="wrapped" %)
339 |(% style="text-align:center" %)(((
340 (% class="content-wrapper" %)
341 (((
342 [[image:attach:DSC_0028.JPG||height="250"]]
343 )))
344 )))
345 |(% style="text-align:center" %)(((
346 Different Tubes with lengths of 80 mm, 140 mm and 160 mm
347 Inner diameter: 28 mm
348 )))
349
350 = Sample mounting =
351
352 {{info title="Pins and clamps"}}
353 Depending on your application, sample installation may vary. There are a selection of pushing pins and pulling clamps available at the beamline which will be presented in this section. Nevertheless these pins or clamps may be unsuitable for your sample. In this case a suitable pin or clamp can be manufactured. Please contact the beamline staff well in advance of your beamtime.
354 {{/info}}
355
356 (% class="wrapped" %)
357 |=(% colspan="2" %)(((
358 Pushing
359 )))|=(% colspan="2" %)(((
360 Pulling
361 )))
362 |(((
363 Bottom push pin
364 )))|(((
365 (% class="content-wrapper" %)
366 (((
367 [[image:attach:DSC_0045.JPG||height="250"]]
368 )))
369 )))|(((
370 Bottom pull thread
371 )))|(((
372 (% class="content-wrapper" %)
373 (((
374 [[image:attach:DSC_0041.JPG||height="250"]]
375 )))
376 )))
377 |(((
378 Top push pin
379
380 M(8 x 1.0)
381
382 70 mm total length
383
384 Hexagonal pin with
385
386 10 mm inner diameter
387 )))|(((
388 (% class="content-wrapper" %)
389 (((
390 [[image:attach:DSC_0047.JPG||height="250"]]
391 )))
392 )))|(((
393 Principle of pull installation
394 )))|(((
395 (% class="content-wrapper" %)
396 (((
397 [[image:attach:DSC_0049.JPG||height="250"]]
398 )))
399 )))
400 |(((
401 Top push pin
402
403 M(8 x 1.0)
404
405 total length 30 mm
406
407 pin length 15 mm
408
409 pin diameter 1.4 mm
410 )))|(((
411 (% class="content-wrapper" %)
412 (((
413 [[image:attach:DSC_0048.JPG||height="250"]]
414 )))
415 )))|(((
416 Pull clamps for low forces
417 )))|(((
418 (% class="content-wrapper" %)
419 (((
420 [[image:attach:DSC_0050.JPG||thumbnail="true" height="250"]]
421 )))
422 )))
423 |(((
424 Top push pin
425
426 M(8x1.0) and M5
427
428 Total length 55 mm
429
430 Pin length 15 mm (M5)
431 )))|[[image:push_pin_m5.jpeg||data-xwiki-image-style-alignment="center" height="464" width="200"]]| |
432
433 = Reference =
434
435 Moosmann et al. "A load frame for in situ tomography at PETRA III", Proc. SPIE 11113, Developments in X-Ray Tomography XII, 1111318 (2019); [[https:~~/~~/doi.org/10.1117/12.2530445>>url:https://doi.org/10.1117/12.2530445||rel="nofollow" shape="rect"]]
436
437