Vertical Rotary Cutting Tool Grinding Device
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Solution Overview
Problem
Existing workpiece grinding technologies face challenges such as large floor space requirements, low machining efficiency, and high coaxiality errors due to horizontal clamping and axial feed methods, which also complicate the detection of rough grinding precision and increase production costs.
Innovation Solution
An integrated rotary cutting tool manufacturing device with a compact design that uses vertical grinding and radial feed methods, featuring separate rough and fine grinding stations, and a workpiece transfer system to maintain precise clamping and rotation, reducing coaxiality errors and improving efficiency.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Area of stationary object
If horizontal clamping and axial feed method is used, then the workpiece can be ground, but the floor space is large and the device size is large
Solution Approach 1:
The patent changes the workpiece arrangement from horizontal to vertical orientation, transforming the grinding process from axial feed to radial feed. This dimensional change allows the device to occupy less floor space while maintaining machining efficiency, as the vertical arrangement enables compact positioning of grinding wheels and workpiece holders in the radial direction rather than extending horizontally
2Manufacturing precision
If flexible chuck and V-shaped block are simultaneously acted on the shank, then the workpiece is located, but the axial center shifts causing large coaxiality error
Solution Approach 1:
The patent removes the V-shaped block from the clamping system, retaining only the flexible chuck to hold the workpiece shank. This extraction eliminates the over-location problem caused by simultaneous action of multiple locating elements, preventing axial center shift and reducing coaxiality errors while simplifying the clamping structure
Solution Approach 2:
Instead of using multiple external locating elements acting on the workpiece (flexible chuck plus V-shaped block), the patent inverts the approach by using a single flexible chuck that adapts to the workpiece shape, allowing the workpiece to self-locate while being gently held, thereby avoiding center shift
3Manufacturing precision
If rough grinding wheel and fine grinding wheel simultaneously act on workpiece, then both grinding operations are performed, but the rough grinding precision is hard to detect
Solution Approach 1:
The patent segments the grinding process into distinct rough grinding and fine grinding stages, with separate grinding wheels positioned sequentially in the radial feed path. This segmentation allows for independent operation and inspection of each grinding stage, making it easy to detect and control rough grinding precision before proceeding to fine grinding, while maintaining continuous production flow
4Productivity
If tray is utilized to load workpieces, then workpieces are loaded, but additional workpiece arrangement process is needed causing low production efficiency
Solution Approach 1:
The patent employs a feeding device that automatically loads workpieces onto the vertical spindle without requiring manual arrangement in trays. The workpieces are fed directly into position through automated mechanisms, eliminating the additional arrangement process and improving production efficiency while reducing device complexity
Data Source
AI summary
The present disclosure discloses an integrated rotary cutting tool manufacturing device and method, the integrated rotary cutting tool manufacturing device comprises a workpiece transfer device, a machine body, a feeding device, grinding devices and a discharge device. The grinding devices comprise a rough grinding device used for carrying out primary grinding on a vertically arranged workpiece and a fine grinding device used for carrying out secondary grinding on the vertically arranged workpiece. The integrated rotary cutting tool manufacturing device is adopted by the rotary cutting tool manufacturing method. The device according to the present disclosure is compact in structure, high in machining efficiency and precision, and low in costs, the maximum values, the minimum values and the average values of the roundness and the concentricity of machined micro drill bits are closer to the standard values, and the stabilization process capability indexes of the roundness.