Rolling Out a Straight Line

Mathematics

★Exhibit Content: Tangent, Hypocycloid ★Interaction: Mechanical Interaction ★Operation: Turn the handwheel and observe the movement path of the pivot. ★Exhibit Description: The exhibit consists of a large disc, a small disc, an animal model, and an operating handwheel. When the handwheel is turned, the small disc rolls inside the large disc, and the small animal on the small disc actually moves back and forth in a straight line. ★Scientific Principle: Why is this? On a plane, when a moving circle rolls along the inside of a fixed circle, the path of a point on this circle is called a hypocycloid. If the radius of the moving circle is exactly half the radius of the fixed circle, the path of any point on the circumference of the moving circle is a straight line. In the exhibit, the diameter of the small disc is exactly half the diameter of the large disc, and the pivot is located exactly on the circumference of the small disc, so its path is a straight line. In machining, the reciprocating linear motion of the blade on a planer utilizes this property of the hypocycloid.

Options

• Φ1.0*1.05m · Style 1 Φ1.0*1.05m
  Dimensions: Φ1.0*1.05m Brand: KexMall Model: PopsciCat-math-054 1. Materials: ① Base: frame 2mm cold-rolled sheet, surround 2.0mm cold-rolled sheet, surface baked paint ② Tabletop: Kelesi artificial stone, thickness ≧12mm, with flame-retardant board underneath ③ Instruction sign: 5mm acrylic UV printing ④ Maintenance door: 2.0mm cold-rolled sheet surface baked paint ⑤ Gears: blue acrylic ⑥ Handwheel: transparent acrylic + 304 stainless steel ⑦ Linear track: yellow acrylic ⑧ Protective cover: transparent acrylic + orange acrylic ⑨ Transmission mechanism: synchronous transmission mechanism + fixing components 2. Main configuration: None 3. Installation requirements: ① Energy requirement: None ② Installation base: place directly ③ Entry passage: door frame size (W×H) ≧1.0m×1.9m, continuous turning interval in passage ≧1.8m ④ Maintenance access: not required

  ★Exhibit Content: Tangent, Hypocycloid ★Interaction: Mechanical Interaction ★Operation: Turn the handwheel and observe the movement path of the pivot. ★Exhibit Description: The exhibit consists of a large disc, a small disc, an animal model, and an operating handwheel. When the handwheel is turned, the small disc rolls inside the large disc, and the small animal on the small disc actually moves back and forth in a straight line. ★Scientific Principle: Why is this? On a plane, when a moving circle rolls along the inside of a fixed circle, the path of a point on this circle is called a hypocycloid. If the radius of the moving circle is exactly half the radius of the fixed circle, the path of any point on the circumference of the moving circle is a straight line. In the exhibit, the diameter of the small disc is exactly half the diameter of the large disc, and the pivot is located exactly on the circumference of the small disc, so its path is a straight line. In machining, the reciprocating linear motion of the blade on a planer utilizes this property of the hypocycloid.

• Φ1.0*1.0m · Style 1 Φ1.0*1.0m
  Dimensions: Φ1.0*1.0m Brand: KexMall Model: PopsciCat-math-055 1. Materials: ① Base: frame 2mm cold-rolled sheet, surround 2.0mm cold-rolled sheet, surface baked paint ② Tabletop: Kelesi artificial stone, thickness ≧12mm, with flame-retardant board underneath ③ Instruction sign: 5mm acrylic UV printing ④ Maintenance door: 2.0mm cold-rolled sheet surface baked paint ⑤ Gears: orange acrylic ⑥ Handwheel: transparent acrylic + 304 stainless steel ⑦ Linear track: yellow acrylic ⑧ Protective cover: transparent acrylic + orange acrylic ⑨ Transmission mechanism: synchronous transmission mechanism + fixing components 2. Main configuration: None 3. Installation requirements: ① Energy requirement: None ② Installation base: place directly ③ Entry passage: door frame size (W×H) ≧1.0m×1.9m, continuous turning interval in passage ≧1.8m ④ Maintenance access: not required

  ★Exhibit Content: Tangent, Hypocycloid ★Interaction: Mechanical Interaction ★Operation: Turn the handwheel and observe the movement path of the pivot. ★Exhibit Description: The exhibit consists of a large disc, a small disc, an animal model, and an operating handwheel. When the handwheel is turned, the small disc rolls inside the large disc, and the small animal on the small disc actually moves back and forth in a straight line. ★Scientific Principle: Why is this? On a plane, when a moving circle rolls along the inside of a fixed circle, the path of a point on this circle is called a hypocycloid. If the radius of the moving circle is exactly half the radius of the fixed circle, the path of any point on the circumference of the moving circle is a straight line. In the exhibit, the diameter of the small disc is exactly half the diameter of the large disc, and the pivot is located exactly on the circumference of the small disc, so its path is a straight line. In machining, the reciprocating linear motion of the blade on a planer utilizes this property of the hypocycloid.

• Φ1.0*1.05m · Style 2 Φ1.0*1.05m
  Dimensions: Φ1.0*1.05m Brand: KexMall Model: PopsciCat-math-056 1. Materials: ① Base: frame 2mm cold-rolled sheet, surround 2.0mm cold-rolled sheet, surface baked paint ② Tabletop: Kelesi artificial stone, thickness ≧12mm, with flame-retardant board underneath ③ Instruction sign: 5mm acrylic UV printing ④ Maintenance door: 2.0mm cold-rolled sheet surface baked paint ⑤ Gears: white acrylic ⑥ Handwheel: transparent acrylic + 304 stainless steel ⑦ Linear track: yellow acrylic ⑧ Protective cover: transparent acrylic + orange acrylic ⑨ Transmission mechanism: synchronous transmission mechanism + fixing components 2. Main configuration: None 3. Installation requirements: ① Energy requirement: None ② Installation base: place directly ③ Entry passage: door frame size (W×H) ≧1.0m×1.9m, continuous turning interval in passage ≧1.8m ④ Maintenance access: not required

  ★Exhibit Content: Tangent, Hypocycloid ★Interaction: Mechanical Interaction ★Operation: Turn the handwheel and observe the movement path of the pivot. ★Exhibit Description: The exhibit consists of a large disc, a small disc, an animal model, and an operating handwheel. When the handwheel is turned, the small disc rolls inside the large disc, and the small animal on the small disc actually moves back and forth in a straight line. ★Scientific Principle: Why is this? On a plane, when a moving circle rolls along the inside of a fixed circle, the path of a point on this circle is called a hypocycloid. If the radius of the moving circle is exactly half the radius of the fixed circle, the path of any point on the circumference of the moving circle is a straight line. In the exhibit, the diameter of the small disc is exactly half the diameter of the large disc, and the pivot is located exactly on the circumference of the small disc, so its path is a straight line. In machining, the reciprocating linear motion of the blade on a planer utilizes this property of the hypocycloid.

• Φ1.0*1.0m · Style 2 Φ1.0*1.0m
  Dimensions: Φ1.0*1.0m Brand: KexMall Model: PopsciCat-math-057 1. Materials: ① Base: frame 2mm cold-rolled sheet, surround 2.0mm cold-rolled sheet, surface baked paint ② Tabletop: Kelesi artificial stone, thickness ≧12mm, with flame-retardant board underneath ③ Instruction sign: 5mm acrylic UV printing ④ Maintenance door: 2.0mm cold-rolled sheet surface baked paint ⑤ Gears: white acrylic ⑥ Handwheel: transparent acrylic + 304 stainless steel ⑦ Linear track: yellow acrylic ⑧ Protective cover: transparent acrylic + orange acrylic ⑨ Transmission mechanism: synchronous transmission mechanism + fixing components 2. Main configuration: None 3. Installation requirements: ① Energy requirement: None ② Installation base: place directly ③ Entry passage: door frame size (W×H) ≧1.0m×1.9m, continuous turning interval in passage ≧1.8m ④ Maintenance access: not required

  ★Exhibit Content: Tangent, Hypocycloid ★Interaction: Mechanical Interaction ★Operation: Turn the handwheel and observe the movement path of the pivot. ★Exhibit Description: The exhibit consists of a large disc, a small disc, an animal model, and an operating handwheel. When the handwheel is turned, the small disc rolls inside the large disc, and the small animal on the small disc actually moves back and forth in a straight line. ★Scientific Principle: Why is this? On a plane, when a moving circle rolls along the inside of a fixed circle, the path of a point on this circle is called a hypocycloid. If the radius of the moving circle is exactly half the radius of the fixed circle, the path of any point on the circumference of the moving circle is a straight line. In the exhibit, the diameter of the small disc is exactly half the diameter of the large disc, and the pivot is located exactly on the circumference of the small disc, so its path is a straight line. In machining, the reciprocating linear motion of the blade on a planer utilizes this property of the hypocycloid.

• 0.8*0.8*1.0m 0.8*0.8*1.0m
  Dimensions: 0.8*0.8*1.0m Brand: KexMall Model: PopsciCat-math-058 1. Materials: ① Base: frame 2mm cold-rolled sheet, surround 2.0mm cold-rolled sheet, surface baked paint ② Tabletop: Kelesi artificial stone, thickness ≧12mm, with flame-retardant board underneath ③ Instruction sign: 5mm acrylic UV printing ④ Maintenance door: 2.0mm cold-rolled sheet surface baked paint ⑤ Gears: white acrylic ⑥ Handwheel: transparent acrylic + 304 stainless steel ⑦ Linear track: yellow acrylic ⑧ Protective cover: transparent acrylic + orange acrylic ⑨ Transmission mechanism: synchronous transmission mechanism + fixing components 2. Main configuration: None 3. Installation requirements: ① Energy requirement: None ② Installation base: place directly ③ Entry passage: door frame size (W×H) ≧1.0m×1.9m, continuous turning interval in passage ≧1.8m ④ Maintenance access: not required

  ★Exhibit Content: Tangent, Hypocycloid ★Interaction: Mechanical Interaction ★Operation: Turn the handwheel and observe the movement path of the pivot. ★Exhibit Description: The exhibit consists of a large disc, a small disc, an animal model, and an operating handwheel. When the handwheel is turned, the small disc rolls inside the large disc, and the small animal on the small disc actually moves back and forth in a straight line. ★Scientific Principle: Why is this? On a plane, when a moving circle rolls along the inside of a fixed circle, the path of a point on this circle is called a hypocycloid. If the radius of the moving circle is exactly half the radius of the fixed circle, the path of any point on the circumference of the moving circle is a straight line. In the exhibit, the diameter of the small disc is exactly half the diameter of the large disc, and the pivot is located exactly on the circumference of the small disc, so its path is a straight line. In machining, the reciprocating linear motion of the blade on a planer utilizes this property of the hypocycloid.

Review

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