УРЛАГ
ГОО САЙХАН БА ЭРҮҮЛ МЭНД
ГАРААР ХИЙСЭН
СОЁЛ БА ТҮҮХ
ҮЗВЭР НААДАМ
БАЙГАЛЬ ОРЧИН
ХООЛ БА УНДАА
УРВУУ ИНЖЕНЕРЧЛЭЛ
ШИНЖЛЭХ УХААН
СПОРТ
ТЕХНОЛОГИ
ӨМСДӨГ ХЭРЭГСЭЛ
Fellows Gear-Shaper Cutter (US 579,708): The 3D Model
A 3D model of the gear-shaped cutter that Edwin R. Fellows drew in Fig. 11 of US 579,708 (30 March 1897). Rolled against a blank as if the two were already meshing gears, this one cutter generates true involute teeth on a gear of any size.
The model was built in FreeCAD with true involute teeth, then saved as a single-mesh .blend. Its proportions are scaled from Fig. 11. The patent gives no dimensions, so the tooth count, module and pressure angle are stated standard choices. It is a display and teaching model, not a working tool.
Дунд шат
Several hours of printing; the slicer reports the exact time
Зааварчилгаа
1
1
The cutter in Fig. 11
The cutter in Fig. 11
Fellows's cutter c is "a gear-shaped body of hardened steel" with alternating projections 2 and recesses 3. The ends of the projections form a series of metal-planing teeth. Its outer end 4 is "slightly recessed or beveled", so each tooth's cutting angle is slightly acute, which gives it rake. Clearance comes from inclining the cutter's axis relative to the blank's axis, not from relieving the teeth, so the teeth run straight. In Fig. 11 the body is one piece with a tapered shank and has a tapered hollow in its cutting end.
2
2
The model in 3D
The model in 3D
Spin the cutter in the viewer and look at the dished cutting face and the tapered hollow. It was built in FreeCAD from an exact involute tooth profile and saved as one joined .blend mesh. It opens in free Blender.
Шаардлагатай багаж:
Ширээний компьютер3
3
Print it
Print it
Stand it on its cutting face with the shank up. The dished face is a near-flat overhang and the hollow has a 24 mm flat roof, so turn on supports from the build plate. PLA is fine for a display model. The real cutter is hardened steel.
Энэ алхмын материал:
PLA утас — хар1 багцШаардлагатай багаж:
3D хэвлэгчМатериал
1- 1 багцТүр орлуулагч
Шаардлагатай багаж
2- Түр орлуулагч
- Түр орлуулагч
Холбогдсон загварын материал
Холбоотой загварууд
Эдгээр загварууд мэдлэг хуваалцдаг — арга техник, материал эсвэл зарчим
CC0 Нийтийн домэйн
Энэ загвар CC0 дор гаргагдсан. Та зөвшөөрөл авахгүйгээр хуулах, өөрчлөх, түгээх, ашиглах боломжтой.
Загвараар дамжуулан бүтээгдэхүүн худалдаж авч Бүтээгчийг дэмжээрэй Бүтээгчийн шимтгэл Борлуулагчаар тогтоосон, эсвэл энэ загварын шинэ хувилбар үүсгэж орлогоо хуваахын тулд өөрийн загварт холбоос болгон оруулна уу.