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Custom Metal Part Cost Reduction? As a customer, how could you help the factory make lower price quotation? With no threat, no fighting. Metal production cost is evaluated by total processing time and the machine depreciation cost. When we develop the new product, Tien-I R&D will always think if there is possible way to improve the processing cost by drive down the complexity of processing procedure and shorten the overall processing time without sacrifice the quality and the function.

Thousands of tool sets are available in hardware shops and via Amazon, and their scale and pricing range widely. You can pay ten dollars for a 32-piece set or spend thousands on a 556-piece set. How can we design a tool set that will become a market favorite? Who is the target customer? What is the customer's industry or field of interest? What are their requirements? Before embarking upon the design process, Tien-I’s R&D team members reflect upon the above questions, as well as the considerations set out below.

As the structure of a ratchet is quite complex, let's begin by summarizing the principle of ratchet design. A ratchet is designed to move only in one direction (either clockwise or counterclockwise) and the amplitude of its swing is fixed. The gear has a pawl, which is a type of latch consisting of a spring-loaded, tapered lever that is pivoted at one end. The gear’s teeth are asymmetrically shaped (each coming to a point, with one edge being shorter and steeper than the other), which allows them to move past the pawl only when the gear rotates in the desired direction. When the gear moves in the desired direction, the teeth can move smoothly past the pawl, making a soft clicking sound. If the gear begins to move in the opposite direction, the pawl engages with the teeth and locks the gear in place to prevent it from moving. This produces torque.