Drilling Tool Radial Adjustment via Integrating Measuring Pin
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Solution Overview
Problem
Existing drilling tools face challenges with fine radial adjustment of cutting inserts, requiring significant effort and time, often necessitating removal from the machine for pre-adjustment using optical methods, and lack mechanical means for precise adjustment without disassembly.
Innovation Solution
Incorporation of an adjusting pin connected to the base body, allowing for radial measurement of cutting inserts using a caliper gauge, enabling simple and accurate adjustment of cutting insert holders, and a variable retaining force mechanism to secure the inserts during operation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If cutting insert holders are adjusted using pre-adjusting devices with optical methods, then measurement precision is improved, but device complexity and time consumption increase
Solution Approach 1:
A mechanical measuring pin is introduced as an intermediary reference element that enables direct measurement of the cutting insert holder's radial position relative to the base body's center axis. The pin serves as a simple, fixed reference point that can be measured against using basic measuring tools, eliminating the need for complex optical pre-adjusting devices while maintaining measurement precision.
Solution Approach 2:
The measuring pin is integrally connected to the base body, creating a self-contained measurement reference system. The base body itself provides the reference framework through the measuring pin, allowing the tool to be measured and adjusted in place without requiring external pre-adjusting equipment or removal from the machine.
2Manufacturing precision
If cutting insert holders are adjusted using pre-adjusting devices, then manufacturing precision is improved, but productivity decreases due to time-consuming adjustment
Solution Approach 1:
The measuring pin acts as a simple mechanical intermediary that provides a fixed reference point for measurement. This allows operators to quickly measure and adjust cutting insert holder positions using basic caliper gauges rather than complex optical systems, significantly reducing adjustment time while maintaining precision.
Solution Approach 2:
The invention replaces complex optical measurement systems with a simple mechanical measuring pin and basic hand tools. This substitution dramatically reduces adjustment time and increases productivity while achieving the same level of measurement precision through straightforward mechanical measurement methods.
3Ease of operation
If multiple adjusting pins are provided for each cutting insert holder, then ease of operation is improved, but manufacturing cost increases
Solution Approach 1:
A single centrally located measuring pin serves as a universal reference point for all cutting insert holders on the base body. This single pin can be used to measure and adjust the position of multiple different holders, eliminating the need to manufacture and install multiple individual adjusting pins while maintaining ease of operation.
Solution Approach 2:
The function of multiple potential adjusting pins is merged into a single central measuring pin. By consolidating the reference function into one centrally located element, the invention reduces manufacturing complexity and cost while maintaining the ability to adjust all cutting insert holders efficiently.
Data Source
AI summary
The invention relates to a base body for a drilling tool, in particular to drilling/grinding tool whose front surface (14) can accommodate a cutting insert holder (2). Said invention also relates to a cutting insert holder used with said base body (1) provided with a seat for receiving a cutting insert (13, 13′, 13″). The aim of the invention is to develop a flexibly usable drilling tool whose cutting insert holder can be adjusted in a simple and accurate manner and is not expensive. For this purpose, at least one adjusting pin (4) which is connected to the base body (1) axially overlaps the cutting insert holder (2) and/or the cutting insert in such a way that a radial adjustment of the cutting insert holder (2) with respect to the base body (1) can be carried out by measuring the radial deviation (a) between the defined point of the cutting insert holder (2) or a cutting insert (3, 3′, 3″) accommodated thereby and the adjusting pin (4). In addition, a bearing surface (19) for supporting the cutting insert holder (2) on the front surface (14) of the base body (1) of the drilling tool is provided with a projection (17), preferably longitudinal, which extends outside the bearing surface (19) and is embeddable into a groove (15) on the front surface (14).