Rake With Stripping Device

Last crawled date: 1 year, 11 months ago

Rake With Stripping Device

Two design concepts for a RAKE with a device to remove easily off the raked up material, like grass or foliage.

A request by a family member and an inspiration resp. small challenge for me.

The animation has been done for "Version B" without showing the actuating compression spring, because I don't know how to animate a compression spring in «KeyShot 4».

But I want to show the function of the stripping device.

Notes:

Stripping device:
Material: Aluminium for all components, without the compresson spring and screws
Compesssion spring: Spring steel
Screws: Steel
Complete moving mass of the stripping device "Version B": approx. 1.65 kg
Complete moving mass of the stripping device "Version C": approx. 1.2 kg

Compression spring for "Version B" (calculated):
Material: Spring steel
Dm = 15.5 mm
d = 1.8 mm
Di = 13.7 mm
Da = 17.3 mm
Number of spring coils: see 3D model
L0 =115 mm
L1 = 106 mm
L2 = 30 mm
Working stroke = 76 mm
c = 1.915 N/mm

Compression spring for "Version C" (calculated):
Material: Spring steel
Dm = 17.8 mm
d = 1.3 mm
Di = 16.5 mm
Da = 19.1 mm
Number of spring coils: see 3D model
L0 =115 mm
L1 = 91.2 mm
L2 = 15.2 mm
Working stroke = 76 mm
c = 0.516 N/mm

Thread for handle attachment: M30 x 3.0
Thread for comb attachment : M6

The models are available as STEP files (.stp) only.