Factors Affecting the Torque of a Screw:
1. **Screw Diameter**: The larger the diameter of the screw, the higher the required torque. This is because a larger diameter typically means the screw engages deeper into the plastic material, increasing resistance during tightening.
2. **Screw Length**: Longer screws require more torque due to increased contact area with the plastic. As the screw goes further into the hole, more surface area comes into play, increasing friction and thus the torque needed.
3. **Screw Pitch**: A larger pitch means greater torque is required. While it might seem contradictory to the contact area, the pitch determines how deep the screw moves with each rotation. A larger pitch results in a deeper engagement, requiring more force to turn. Think of it like gears—more teeth mean less effort per turn.
4. **Screw Shape**: The shape of the screw’s tip, such as sharp or triangular, doesn’t directly affect torque, but it often reflects different thread designs. For example, pointed-tail screws usually have shallower threads and require less torque compared to others.
5. **Screw Hole Diameter**: Smaller screw holes increase the required torque because the screw has less space to move, leading to higher resistance.
6. **Screw Hole Draft Angle**: A larger draft angle increases the torque requirement. This is because the hole tapers inward, creating more friction as the screw is tightened. The draft angle also affects the thickness of the plastic wall around the screw.
7. **Screw Hole Chamfer**: A chamfer helps guide the screw into the hole, preventing slippage. However, if too deep or steep, it may reduce the remaining plastic material around the screw, potentially weakening the hold.
8. **Plastic Material**: Harder plastics, such as those reinforced with glass fiber, require more torque due to their increased resistance to deformation.
Dongguan Changan Key Electronics Factory was founded in 2003 and is located in Dongguan, known as the "World Factory." The company integrates R&D, manufacturing, and sales, and operates under two brands: “STAROBOT Robot†and “ELET Yilite.†Their product range includes automatic soldering machines, soldering robots, torque meters, screw fastening machines, dispensing systems, and custom soldering tips.
STAROBOT manipulators are a leading brand in automation equipment in China, offering solutions for automatic soldering robots, screw fastening automation, dispensing automation, and specialized soldering tools. ELET specializes in precision torque testing, providing devices such as electric torque testers, hydraulic pulse torque testers, cap torque testers, and more.
With years of industry experience, we are the official agent for Quantum Data Video Maker in the U.S. Since our establishment, we have focused on customer satisfaction, quality, and innovation. In the fields of automation and mechanical instrumentation, we set high standards and continue to be a trusted name in the global market.
The above information is provided by Ms. Mo at Dongguan Changan Key Electronics Factory. Contact details: Tel: (0769) 85492889 / 13537040198 Fax: (0769) 85393191 Address: 2nd Floor, Xingfa, Changshi Science and Technology Park, 6th Industrial Zone, Wusha Liwu, Chang'an Town, Dongguan City, Guangdong Province; B1019, Area A, 1st Floor, Mingsha Electronics Square, Changsha Town, Dongguan City. Website: [Not Provided] [Not Provided] [Not Provided]
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