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"Chocolate depositor" with exactly rectangular trajectory
Device for loading chocolate bars in a band conveyor with with exactly rectangular trajectory of the depositor slide
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"Chocolate depositor" with oval trajectory
Device for loading chocolate bars in a band conveyor with oval trajectory of the depositor slide for consistent use of largest possible temporal overlap of the horizontal and the vertical component of movement
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Sealing pliers drived by a crank swing arm with optimized course of movement
The video shows as a module in a packaging machine the construction and the functional routine of a sealing station with an upstream crank swing arm without optimized course of movement, here with iteratively adjusted velocity and acceleration values to the fixed predetermined position set-points, and an additionally fitted brief standstill of the driving crank in the middle phase of the seal for a nice overall course.
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Sealing pliers drived by a crank swing arm without optimized course of movement
The video shows as a module in a packaging machine the construction and the functional routine of a sealing station with an upstream crank swing arm without optimized course of movement. Both inlet and outlet, it comes to improper contact between the bag material and the seal bars.
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MC/UG-combination
Combination of a nonuniform transmitting gear (UG) drived by a motion control system (MC)
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Push crank (MC-UG) - Motion task "Sine Oscillation"
Combination of motion control system and nonuniform transmitting gear (MC/UG-combination) to convert the primary drive rotary movement into a linear translatory movement for the motion task "sine oscillation"
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Push crank (MC-UG) - Motion task "Reversal dwell with tolerance"
Combination of motion control system and nonuniform transmitting gear (MC/UG-combination) to convert the primary drive rotary movement into a linear translatory movement for the motion task "Reversal dwell with tolerance"
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Push crank (MC-UG) - Motion task "Synchronous Drive"
Combination of motion control system and nonuniform transmitting gear (MC/UG-combination) to convert the primary drive rotary movement into a linear translatory movement for the motion task "Synchronous Drive"
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Push crank (MC-GG) - Motion task "Sine Oscillation"
Combination of motion control system and uniform transmitting gear (MC/GG-combination) to convert the primary drive rotary movement into a linear translatory movement for the motion task "sine oscillation"
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Push crank (MC-GG) - Motion task "Reversal dwell with tolerance"
Combination of motion control system and uniform transmitting gear (MC/GG-combination) to convert the primary drive rotary movement into a linear translatory movement for the motion task "Reversal dwell with tolerance"
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Push crank (MC-GG) - Motion task "Synchronous Drive"
Combination of motion control system and uniform transmitting gear (MC/GG-combination) to convert the primary drive rotary movement into a linear translatory movement for the motion task "Synchronous Drive"
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Link containing mechanism for guiding a work body
Six-tier, nonuniform transmitting link containing mechanism making a constrained movement of working bodies, e.g. at a manufacturing plant, by desired absolute or relative link positions with speed control of the course of movement by a motion control system
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Compound slide for guiding a work body
Compound slide with nonuniform transmitting gear making a constrained movement of working bodies, e.g. at a manufacturing plant, by desired absolute or relative link positions with speed control of the course of movement by a motion control system
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Flat handle piers
Six-tier swivel joint transmission unit for a special pliers for gripping of planar objects, which leads the collet jaw relative to the other collet jaw on the plier body
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Flat handle piers - Schematic illustration
Schematic illustration of a six-tier swivel joint transmission unit for a special pliers for gripping of planar objects, which leads the collet jaw relative to the other collet jaw on the plier body
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Conchoidal straight-line linkage of the first type
Model of a conchoidal straight-line linkage of the first type for linear guiding according to Franz Reuleaux (1829 - 1905)
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Hand pliers with parallel jaw guidance by Hain
Hand pliers by Kurt Hain with a six-tier swivel joint transmission unit, which collet jaws remain relative to each other in parallel while its opening and closing movement
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Kinematically optimized hand pliers with parallel jaw guidance by Hain
Kinematically optimized hand pliers by Kurt Hain, which collet jaws remain relative to each other in parallel while its opening and closing movement
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Kinematically optimized hand pliers with parallel jaw guidance by Hain - Schematic illustration
Schematic illustration of a kinematically optimized hand pliers by Kurt Hain, which collet jaws remain relative to each other in parallel while its opening and closing movement
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Parallel guidance transmitting gear based on Roberts theorem
Exact parallel guidance of a link level by Kurt Hain with two transmission joints based on Roberts theorem about the three-way generation of coupler-curves
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Seven-tier parallel guidance transmitting gear by Hain
Exact parallel guidance of a link level by Kurt Hain with only one transmission joint as over-determined seven-tier transmitting gear
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Six-tier parallel guidance transmitting gear by Hain
Exact parallel guidance of a link level by Kurt Hain (1908 - 1995) with only one transmission joint as six-tier transmitting gear
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Production of a workpiece with circular cross-section at round woodturning
A resting point, in the video the blue cutting edge, produces a circular cross-section on the moving workpiece
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Mechanism generating circular orbits
The blue moving arm generates circular orbits relative to the fixed green component, e.g. as a basis for woodturning
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Mechanism generating concentric ellipses having a "double shutter"
The blue arm generates mathematically exact ellipses by two turning points, which slide with the yellow and the red slider in a cruciform guideway of the green component, e.g. as a basis for woodturning
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Oval woodturning with the kinematic inversion "double loop" for producing an elliptical cross-section
For moving you rotate with the lathe's spindle for example the red block around the fixed red pivot point. The red block transmits its rotation on the green clamping plate. The clamping plate turns and slides simultaneously with their cross-guide on the red and the yellow block back and forth. Thereby the cutting edge cuts exact ellipses into the workpiece.
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Production of a workpiece with elliptical cross-section at oval woodturning
With slow rotation you can see that a once cut ellipse with its contour exactly slides along the cutting position, with which it was originally cut. This point remains at rest and exactly at that level, the turner has to position its cutting edge again, if he wants to cut deeper or wider in the radial direction in the longitudinal direction.
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Angular displacement of a cutting edge during rotation of the workpiece at oval woodturning
As a kinematic characteristic of oval woodturning, the video shows how the rake angle and the clearance angle of an applied cutting edge change periodically during the circulation of the workpiece, and how cut ellipses get twisted relative to each other, if the cutting edge is not exactly lead to the spindle height.
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Cardan circles generating ellipses with a fixed gear at oval woodturning
Production of exact ellipses with cardan circles according to the principle of the Italian Renaissance mathematician Gerolamo Cardano. It refers to two circles, one of which is exactly twice as large as the other, and where the smaller exactly rolls within the larger e.g. using a suitable gear.
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"Volmer tooth belt transmission" generating ellipses at oval woodturning
Generation of exact ellipses with a tooth belt transmission according to Johannes Volmer. The orange, rectangular plate can be shifted within the brown guides relative to the round yellow disc. So you continuously change the spacing between the blue and light-violet pulley. This allows to set the slenderness of the generated ellipses as you wish, without having to change any gears (see cardan circles).
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Kinematic inversion of the "Volmer tooth belt transmission" as a new oval woodturning kinematics
Generation of exact ellipses with a tooth belt transmission according to Johannes Volmer. The orange, rectangular plate can be shifted within the brown guides relative to the round yellow disc. So you continuously change the spacing between the blue and light-violet pulley. This allows to set the slenderness of the generated ellipses as you wish, without having to change any gears (see cardan circles).
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Design configuration of the oval woodturning machine ODM
Design configuration of the oval woodturning machine ODM by Johannes Volmer. 3D CAD model created at the Professorship of Assembly and Handling Technology at Chemnitz University of Technology headed by Prof. Dr.-Ing. Maik Berger.
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Functional principle of the oval woodturning machine ODM
Functional principle of the oval woodturning machine ODM by Johannes Volmer. 3D CAD model created at the Professorship of Assembly and Handling Technology at Chemnitz University of Technology headed by Prof. Dr.-Ing. Maik Berger.
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Motion design - Preview
Preview image for the e-lecture "Motion design" by Reinhard Braune
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Dimensional synthesis I - Preview
Preview image for the e-lecture "Dimensional synthesis I" by Reinhard Braune
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MC-drive - Preview
Preview image for the e-lecture "MC-drive" by Reinhard Braune
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Dimensional synthesis II - Preview
Preview image for the e-lecture "Dimensional synthesis II" by Reinhard Braune
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Reuleaux and RWTH - Preview
Preview image for the e-lecture "Reuleaux and RWTH" by Reinhard Braune
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Volmer-Profiling - Preview
Preview image for the e-lecture "Volmer-Profiling" by Reinhard Braune
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