Process for drilling a tunnel in which to place a sensor in a cooking vessel and vessel created by said process
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Solution Overview
Problem
Existing methods for drilling tunnels in cooking vessels to place temperature sensors are inefficient due to the use of fragile, small-diameter drill bits that wear out quickly and result in inconsistent tunnel dimensions and production delays, especially when dealing with varying bottom thicknesses and materials like aluminum.
Innovation Solution
A two-step drilling process using a pre-drilling step with a larger diameter drill bit followed by a deep drilling step with a smaller diameter bit, along with axial oscillation and controlled rotation speeds, to create a rectilinear tunnel with consistent dimensions, reducing friction and extending drill bit lifespan.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If a small-diameter drill bit is used to drill through the bottom of the cooking vessel, then the tunnel dimensions can be controlled, but the drill bit becomes very fragile and wears out prematurely
Solution Approach 1:
The drilling operation is divided into two separate steps: first drilling a pilot hole with a larger diameter drill bit, then using a smaller diameter drill bit to complete the tunnel. This segmentation allows each drill bit to be optimized for its specific function, with the larger bit creating the initial path and the smaller bit finishing the precise tunnel, thereby reducing fragility issues while maintaining dimensional control.
Solution Approach 2:
A pilot hole is drilled first before the final tunnel is created. This preliminary action provides a guide path that supports the smaller diameter drill bit during the second drilling step, preventing the bit from bending or breaking due to lateral forces, thus improving drill bit reliability while maintaining precision.
2Length of stationary object
If a very long drill bit is used to drill through the thick bottom, then the tunnel can be created, but the drill bit is fragile and production rate decreases
Solution Approach 1:
The deep drilling operation is segmented into two steps: first drilling a shallow pilot hole, then drilling the remaining depth. This eliminates the need for a single very long drill bit, allowing the use of shorter, more rigid bits that can be used at higher speeds and feed rates, thereby improving production rate while achieving the required tunnel depth.
Solution Approach 2:
The pilot hole is drilled first to establish the tunnel path and provide support for the second drilling step. This preliminary action allows the use of shorter drill bits that can operate at higher speeds, significantly improving productivity compared to using a single long drill bit throughout the entire depth.
3Productivity
If drilling is performed at high speed, then productivity increases, but heat concentration at the drill bit tip and shaving removal difficulty increase
Solution Approach 1:
The drilling process is divided into two stages: pilot hole drilling and final tunnel drilling. The pilot hole is drilled first with a larger diameter bit that generates less heat concentration, then the smaller bit completes the tunnel. This segmentation reduces peak heat generation at the drill bit tip while maintaining high overall productivity.
Solution Approach 2:
The pilot hole is drilled first to create a preliminary path that removes material more efficiently with less heat generation. This preliminary action reduces the material removal burden on the second drilling step, allowing higher speeds to be used in the final tunnel creation without excessive heat concentration or shaving clogging.
4Strength
If the drill bit diameter is increased, then drill bit strength improves, but the tunnel dimensions become inconsistent with sensor placement requirements
Solution Approach 1:
The drilling operation is segmented into two steps with different drill bit diameters. The first step uses a larger diameter bit for creating the pilot hole, where strength is more important than precision. The second step uses a smaller diameter bit for creating the final tunnel, where precision is critical for sensor placement. This segmentation allows each bit to be optimized for its specific function.
Solution Approach 2:
The pilot hole is drilled first with a larger, stronger drill bit that can handle the rough material removal. This preliminary action creates a guide path that then allows the smaller, more precise drill bit to create the final tunnel with consistent dimensions suitable for sensor placement, combining the advantages of both larger and smaller bits.
Data Source
AI summary
Provided is a process for drilling a tunnel (11) in which to place a sensor, in particular a temperature sensor, in a cooking vessel (1) comprising a bowl (2) with a bottom (3) having a thickness (e), said process comprising a step for drilling said tunnel made in the thickness (e). The drilling step comprises a pre-drilling step using a drill bit with a diameter of D1, and a deep drilling step using a drill bit with a diameter of D2, D1 being greater than D2.