-
Notifications
You must be signed in to change notification settings - Fork 0
/
assignment-08-final-project.html
348 lines (338 loc) · 19.2 KB
/
assignment-08-final-project.html
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
<!DOCTYPE html>
<html>
<head>
<meta charset="utf-8">
<meta name="viewport" content="width=device-width, initial-scale=1">
<title>HCDE Digital Fabrication Projects</title>
<link rel="stylesheet" href="https://cdn.jsdelivr.net/npm/[email protected]/css/bulma.min.css">
<script defer src="https://use.fontawesome.com/releases/v5.3.1/js/all.js"></script>
<style>
.body-text p {
margin-bottom: 1rem;
}
h3 {
font-size: 1.5rem;
margin-top: 1rem;
margin-bottom: 0.25rem;
}
.composer-column figure {
margin-bottom: 3rem;
}
</style>
</head>
<body>
<section class="section">
<div class="container">
<div class="level">
<div class="level-item-left"><a href="index.html">← back</a></div>
</div>
<div class="tile is-ancestor">
<div class="tile is-parent">
<div class="tile is-child box">
<div class="columns">
<div class="column body-text">
<h2 class="title is-size-2">Assignment 8: Final Project</h2>
</div>
</div>
</div>
</div>
</div>
<div class="tile is-ancestor">
<div class="tile is-parent">
<div class="tile is-child box">
<h2 class="title is-size-3">Camera Boom</h2>
<div class="columns">
<div class="column is-12">
<h2 class="title is-size-5">Original Concept</h2>
<figure class="image">
<img src="images/boom/diagram-1a.jpg">
</figure>
<h2 class="title is-size-5">Final Assembly</h2>
<figure class="image">
<img src="images/boom/diagram-1b.jpg">
</figure>
</div>
</div>
</div>
</div>
</div>
<div class="tile is-ancestor">
<div class="tile is-parent">
<div class="tile is-child box">
<h2 class="title is-size-3"><img src="images/boom/A.png" style="vertical-align: middle;"> Counterweight</h2>
<div class="columns">
<div class="column">
<figure class="image is-square">
<img src="images/boom/bottle-mount-01.jpg">
</figure>
<p>The counterweight is a steel bottle that I already had on-hand. My original intent was to use a threaded insert into the bottle which would attach to a threaded printed) bolt in the conduit. In the end, I used a simpler press-fit design for the bottle insert instead.</p>
</div>
<div class="column">
<figure class="image is-square">
<img src="images/boom/bottle-mount-04.jpg">
</figure>
<p>The conduit insert is used to attach both the counter weight and the camera mount/swivel. At this point in the design process I started adding insets for the hex nuts with dramatically improved the speed of assembly.</p>
</div>
<div class="column">
<figure class="image is-square">
<img src="images/boom/bottle-mount-05.jpg">
</figure>
<p>These mounts are attached to the conduit by drilling and riveting. I would have used another M6 bolt, but this meant I had an excuse to get a rivet tool.</p>
</div>
</div>
<div class="columns">
<div class="column">
<figure class="image is-square">
<img src="images/boom/bottle-mount-02.jpg">
</figure>
<p></p>
</div>
<div class="column">
<figure class="image is-square">
<img src="images/boom/bottle-mount-06.jpg">
</figure>
<p>I filled plastic bags with sand and inserted them in the bottle for weight. The end cap is press-fit into the bottle, to increase the friction and tightness of the fit, I wrapped the insert in painter's tape..</p>
</div>
<div class="column">
<figure class="image is-square">
<img src="images/boom/bottle-mount-07.jpg">
</figure>
<p>The whole assembly is more low-profile than I was expecting, which is nice.</p>
</div>
</div>
</div>
</div>
</div>
<div class="tile is-ancestor">
<div class="tile is-parent">
<div class="tile is-child box">
<h2 class="title is-size-3">
<img src="images/boom/B.png" style="vertical-align: middle;">
<img src="images/boom/C.png" style="vertical-align: middle;">
Boom Mount & Vise
</h2>
<div class="columns">
<div class="column">
<figure class="image is-square">
<img src="images/boom/mount-01.jpg">
</figure>
<p>The quick release plate geometry-test went better than expected. Thanks, calipers!</p>
</div>
<div class="column">
<figure class="image is-square">
<img src="images/boom/mount-02.jpg">
</figure>
<p>These were designed to break... which they did. The two-part bracket on the right was printed twice and attached with screws. I rotated the part 90° to align the layers for strength.</p>
</div>
<div class="column">
<figure class="image is-square">
<img src="images/boom/mount-03.jpg">
</figure>
<p>Under stress this version shows the brackets rotating around the mounting screws (already deforming). The rotational stress was too much and these broke as expected.</p>
</div>
</div>
<div class="columns">
<div class="column">
<figure class="image is-square">
<img src="images/boom/mount-04.jpg">
</figure>
</div>
<div class="column">
<figure class="image is-square">
<img src="images/boom/mount-05.jpg">
</figure>
<p>I forgot to take a picture of this when it was whole. This was printed with 100% infill and with the layers in the least optimal alignment for strength.</p>
</div>
<div class="column">
<figure class="image is-square">
<img src="images/boom/mount-06.jpg">
</figure>
<p>The break aligned with the layers was so clean it looks almost like it was printed that way.</p>
</div>
</div>
<div class="columns">
<div class="column">
<figure class="image is-square">
<img src="images/boom/mount-07.jpg">
</figure>
<p>This design limits the PLA parts to only those areas where a specific shape is required. Interestingly. the mounting plate itself never broke in any tests (even when printed with only 20% infill). It's strong enough when the forces are all compression.</p>
</div>
<div class="column">
<figure class="image is-square">
<img src="images/boom/mount-09.jpg">
</figure>
<p>This version uses standard conduit clamps and fasteners in all the stress areas.</p>
</div>
<div class="column">
<figure class="image is-square">
<img src="images/boom/mount-10.jpg">
</figure>
</div>
</div>
<div class="columns">
<div class="column">
<figure class="image is-square">
<img src="images/boom/mount-11.jpg">
</figure>
</div>
<div class="column">
<figure class="image is-square">
<img src="images/boom/mount-08.jpg">
</figure>
<p>This will be the "final" design, the original "pin vise" version just isn't practical with all-PLA parts and with the time remaining.</p>
</div>
<div class="column">
<figure class="image is-square">
<img src="images/boom/mount-12.jpg">
</figure>
<p>Test Engineer Simon checks things out while under stress. The bag has a brick in it.</p>
</div>
</div>
</div>
</div>
</div>
<div class="tile is-ancestor">
<div class="tile is-parent">
<div class="tile is-child box">
<h2 class="title is-size-3">
<img src="images/boom/D.png" style="vertical-align: middle;">
<img src="images/boom/E.png" style="vertical-align: middle;">
Camera Mount & Swivel</h2>
<div class="columns">
<div class="column">
<figure class="image is-square">
<img src="images/boom/cam-mount-01.jpg">
</figure>
<p>This is a proof-of-concept for the latching mechanism. I'm using M6 bolts throughout, but this would probably work better with smaller bolts.</p>
</div>
<div class="column">
<figure class="image is-square">
<img src="images/boom/cam-mount-02.jpg">
</figure>
</div>
<div class="column">
<figure class="image is-square">
<img src="images/boom/cam-mount-03.jpg">
</figure>
</div>
</div>
<div class="columns">
<div class="column">
<figure class="image is-square">
<img src="images/boom/cam-mount-04.jpg">
</figure>
</div>
<div class="column">
<figure class="image is-square">
<img src="images/boom/cam-mount-05.jpg">
</figure>
</div>
<div class="column">
<figure class="image is-square">
<img src="images/boom/cam-mount-06.jpg">
</figure>
<p>The bolt threads abrade the walls when moving, so shoulder bolts would be preferred.</p>
</div>
</div>
<div class="columns">
<div class="column">
<figure class="image is-square">
<img src="images/boom/cam-mount-07.jpg">
</figure>
<p>Building on the latch proof-of-concept, I extended the mounting tray to include the other side to hold the mounting plate in place. I then designed the swivel mount to attach to the mounting tray and the same conduit insert as the counterweight.</p>
</div>
<div class="column">
<figure class="image is-square">
<img src="images/boom/cam-mount-08.jpg">
</figure>
<p>The swivel joint uses a ratcheted surface to lock it in-place, and define pre-set angles. Shout out to <a href="https://benchickadel.github.io/index.html">Ben</a>, for help using <code>Flow</code> commands to achive this effect. I had a lot of difficulty getting the cutting edge to work until I realized that not all of the edges joined. <code>MergeEdge</code> turned out to be the life-saving command.</p>
</div>
<div class="column">
<figure class="image is-square">
<img src="images/boom/cam-mount-09.jpg">
</figure>
<p></p>
</div>
</div>
<div class="columns">
<div class="column">
<figure class="image is-square">
<img src="images/boom/cam-mount-10.jpg">
</figure>
</div>
<div class="column">
<figure class="image is-square">
<img src="images/boom/cam-mount-11.jpg">
</figure>
<p>The slider locking nut was not really necessary in the proof-of-concept, but with a camera mounted, it was very helpful to make the whole assembly more secure. This photo shows a wingnut, but to have the camera parallel to the boom, a hex nut is needed due to space.</p>
</div>
<div class="column">
<figure class="image is-square">
<img src="images/boom/cam-mount-12.jpg">
</figure>
<p>Not pictured: Me poised to leap from the sidelines and grab the camera if things start to topple (they didn't).</p>
<p>This is about the upper limit of the size/weight or lens that can be safely mounted on this assembly.</p>
</div>
</div>
</div>
</div>
</div>
<div class="tile is-ancestor">
<div class="tile is-parent">
<div class="tile is-child box">
<h2 class="title is-size-3">Last Thoughts</h2>
<div class="columns">
<div class="column content">
<p>This project has a lot of room for improvement and iteration.</p>
<p>Thoughts for next steps:</p>
<ul>
<li>Redesign the boom mount assembly for greater stability and ease of use. It's still not clear how well it holds the boom in place over time.</li>
<li>Use a boom with a square cross-section to prevent unwanted rotation.</li>
<li>Use smaller bolts. M6 bolts are overkill for most connections here.</li>
<li>Make the adjustable areas more user friendly, too man hex nuts and wingnuts.</li>
<li>Use heat-set threaded inserts in several places instead of hex nuts.</li>
<li>Redesign the counterweight to use disks from hand weights, for adjustability.</li>
<li>Try to CNC some metal parts!</li>
</ul>
</div>
<div class="column">
<figure class="image is-square">
<img src="images/boom/graveyard.jpg">
</figure>
<p>This project had a large test-part graveyard</p>
</div>
</div>
</div>
</div>
</div>
<div class="tile is-ancestor">
<div class="tile is-parent">
<div class="tile is-child box">
<h2 class="title is-size-3">Files</h2>
<div class="columns">
<div class="column content">
<h2 class="title is-size-4">CAD files</h2>
<ul>
<li><a href="images/boom/CAD/boom-counterwieght-connection.3dm">Counter Weight Attachment</a></li>
<li><a href="images/boom/CAD/boom-mount.3dm">Boom Mount</a></li>
<li><a href="images/boom/CAD/boom-camera-mount.3dm">Camera Mount & Swivel</a></li>
</ul>
<h2 class="title is-size-4">STL files</h2>
<ul>
<li><a href="images/boom/STL/boom-counterwieght-bottle-insert.stl">Counter Weight - Bottle Insert</a></li>
<li><a href="images/boom/STL/boom-counterwieght-conduit-insert.stl">Counter Weight - Conduit Insert</a></li>
<li><a href="images/boom/STL/boom-mount-plate.stl">Boom Mount - Mount Plate</a></li>
<li><a href="images/boom/STL/boom-mount-sleeve.stl">Boom Mount - Sleeve</a></li>
<li><a href="images/boom/STL/boom-camera-mount-sled.stl">Camera Mount - Sled</a></li>
<li><a href="images/boom/STL/boom-camera-mount-tray.stl">Camera Mount - Tray</a></li>
<li><a href="images/boom/STL/boom-camera-swivel-inner.stl">Camera Swivel - Inner Part</a></li>
<li><a href="images/boom/STL/boom-camera-swivel-outer.stl">Camera Swivel - Outer Part</a></li>
</ul>
</div>
</div>
</div>
</div>
</div>
</section>
</body>
</html>