3dExport
clamping mechanism of heavy workpiece
by 3dExport
Last crawled date: 1 year, 10 months ago
purpose and action
when clamping heavy-duty workpieces, the claw clamping mechanism is used instead of the large inner diameter cylinder.
environment and operability
the device acts as a manipulator connected to the front end of the manipulator.
the air supplied by the arm drives the cylinder to open and close the manipulator.
object artifact
workpiece
dimensions: w573 x d150 x h15mm
weight: 5.4kg
workpiece rack
dimensions: w153 x d600 x h102mm
weight: 15.3kg
characteristic
specification and size
unit as a whole
maximum dimension: w695 (with manipulator open) x d137 x h149mm
profile size: w560 x d137 x h102mm
cylinder
reference side: cylinder diameter φ 50mm, stroke 30mm
attached side: cylinder diameter φ 40mm, stroke 30mm
workpiece action
horizontal jump acceleration fixed: 0.2g
instantaneous maximum horizontal jump acceleration: 1g
accuracy and load
the inertia force at the maximum acceleration of horizontal runout is less than the retraction side thrust of cylinder.
selection basis of main parts
safe cylinder capacity for handling.
key points of design
calculation process of main parts
φ 40mm cylinder output (when horizontal runout is 1g)
inertia force of cylinder: f = ma = (m1 + m2) a
total weight of workpiece: m1 = 6 × 5.4 + 15.3 = 47.7kg
overall weight of manipulator: m2 = 2.11kg
→ f=(47.7+2.11)×9.8=488n
retraction thrust: f2 = η xa2xp
load rate: η = 1 (according to product catalogue)
retracted pressure area: a2 = 1056 mm 2 (according to product catalogue)
service pressure: p = 0.5mpa
f2=1 x 1056 x 0.5 = 528n
safety factor: f2 / f = 528 / 488 = 1.08 times
key points of structure making and design
using two guide shafts on one side, the reaction force borne by the manipulator is offset by the shear force between the guide shaft and the fixed seat, and the torque will not be transmitted to the cylinder structure.
there is a through-hole on the sliding surface of the guide shaft, so oil-free bushing is used.
when clamping heavy-duty workpieces, the claw clamping mechanism is used instead of the large inner diameter cylinder.
environment and operability
the device acts as a manipulator connected to the front end of the manipulator.
the air supplied by the arm drives the cylinder to open and close the manipulator.
object artifact
workpiece
dimensions: w573 x d150 x h15mm
weight: 5.4kg
workpiece rack
dimensions: w153 x d600 x h102mm
weight: 15.3kg
characteristic
specification and size
unit as a whole
maximum dimension: w695 (with manipulator open) x d137 x h149mm
profile size: w560 x d137 x h102mm
cylinder
reference side: cylinder diameter φ 50mm, stroke 30mm
attached side: cylinder diameter φ 40mm, stroke 30mm
workpiece action
horizontal jump acceleration fixed: 0.2g
instantaneous maximum horizontal jump acceleration: 1g
accuracy and load
the inertia force at the maximum acceleration of horizontal runout is less than the retraction side thrust of cylinder.
selection basis of main parts
safe cylinder capacity for handling.
key points of design
calculation process of main parts
φ 40mm cylinder output (when horizontal runout is 1g)
inertia force of cylinder: f = ma = (m1 + m2) a
total weight of workpiece: m1 = 6 × 5.4 + 15.3 = 47.7kg
overall weight of manipulator: m2 = 2.11kg
→ f=(47.7+2.11)×9.8=488n
retraction thrust: f2 = η xa2xp
load rate: η = 1 (according to product catalogue)
retracted pressure area: a2 = 1056 mm 2 (according to product catalogue)
service pressure: p = 0.5mpa
f2=1 x 1056 x 0.5 = 528n
safety factor: f2 / f = 528 / 488 = 1.08 times
key points of structure making and design
using two guide shafts on one side, the reaction force borne by the manipulator is offset by the shear force between the guide shaft and the fixed seat, and the torque will not be transmitted to the cylinder structure.
there is a through-hole on the sliding surface of the guide shaft, so oil-free bushing is used.
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