Woodworking Grooving Planer With Axial-Radial Pitch Locking
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Solution Overview
Problem
Existing woodworking grooving planes suffer from issues such as cutter instability due to pitch clearance, lack of size memory, inaccurate size calibration, and difficulty in replacing damaged cutters, which affect working accuracy and efficiency.
Innovation Solution
The woodworking grooving planer incorporates a grooving cutter assembly with a rotary leadscrew and lifting slider, axial and radial locking mechanisms, a size locking mechanism, zero-point calibration, and a standby cutter assembly to ensure stability, accurate depth adjustment, and easy cutter replacement.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If a rotary leadscrew is used to adjust the cutter height, then the cutter can be adjusted to the required depth, but pitch clearance between the rotary leadscrew and lifting slider causes cutter instability and size inaccuracy
Solution Approach 1:
The locking mechanism is divided into two independent parts: axial locking (locking nut and locking bolt) and radial locking (locking wedge). This segmentation allows each locking component to address specific aspects of the leadscrew-slider connection, eliminating pitch clearance from both directions and preventing cutter instability while maintaining adjustment capability.
2Productivity
If the grooving plane has no size memory function, then the structure remains simple, but frequent repeated adjustment of the grooving cutter at the same height affects working accuracy and efficiency
Solution Approach 1:
The size locking mechanism includes a locking sleeve and locking shaft that can be positioned at predetermined locations along the guide rod. These locking positions serve as memory points for frequently used groove depths. By preliminarily setting these locking positions, the operator can quickly recall and reproduce the same cutting depth without repeated manual adjustment, improving both efficiency and accuracy.
3Ease of operation
If there is no size calibration and reading system, then the device structure remains simple, but quantitative adjustment of working size and scanning of readings becomes difficult
Solution Approach 1:
The zero-point calibration mechanism uses the existing structure components (lifting base, guide rod, locking sleeve) to provide calibration functionality. The locking sleeve itself serves as both a positioning mechanism and a reading reference. By utilizing the self-aligning features of the threaded connection and locking mechanism, the system provides quantitative size adjustment without requiring separate complex calibration devices, achieving ease of operation with minimal added complexity.
4Ease of manufacture
If the cutter is integrally formed or fixedly connected with the cutter shaft, then the cutter assembly is simple, but replacing or repairing damaged cutters becomes difficult
Solution Approach 1:
The cutter assembly is segmented into the cutter blade and cutter shaft as separate components. The cutter blade can be independently removed and replaced by detaching it from the cutter shaft, while the cutter shaft remains part of the adjustable assembly. This segmentation maintains the simplicity of the overall assembly structure while enabling easy replacement of damaged cutters without affecting the entire cutter shaft or lifting mechanism.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
The solution enhances stability, accuracy, and efficiency by preventing cutter instability, allowing for quick and precise depth adjustments and easy cutter replacement, thereby improving working speed and accuracy.
Implementation Method 1
the lifting slider is arranged on the rotary leadscrew rod through threaded connection, and can drive the lifting slider to move up or down when the rotary leadscrew rod rotates
Data Source
AI summary
The present application relates to woodworking tools in general and in particular to a woodworking grooving planer. A woodworking grooving planer comprises a planer body, a planer cutter assembly, a planer cutter lifter, an axial locking mechanism and a radial locking mechanism; the grooving planer lift comprises a rotary leadscrew, a lifting slider, a lifting base, a guide rod and a stopper; rotating the rotatory handle can make the lifting slider drive the cutter assembly to move up or down; the axial locking mechanism and the radial locking mechanism can make the rotary screw thread press the lifting slider axially and radially, so that a close thread fit is established between the rotary screw and the lifting slider, thus effectively avoiding the problem of instability and imprecision caused by pitch clearance.