Saw Blade Tooth-Back Welding for Hard Material Tips
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Solution Overview
Problem
Existing methods for joining hard material bodies to saw blade teeth are limited by the space available on the tooth face, making it difficult to achieve effective attachment and cutting geometry.
Innovation Solution
Joining hard material bodies to the tooth back instead of the tooth face, using a welding device with a welding introduction attachment that melts and solidifies during the welding process, and optionally coating or grinding the hard material bodies for improved cutting properties.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If hard material bodies are joined to the tooth face, then the cutting geometry can be formed, but the space available for welding is limited by tooth height and distance from preceding tooth
Solution Approach 1:
The patent applies inversion by joining the hard material body to the tooth back instead of the tooth face. This reverses the conventional approach and allows sufficient welding space while maintaining cutting geometry through subsequent grinding of the tooth face.
Solution Approach 2:
The patent moves the joining location from the two-dimensional tooth face to the three-dimensional tooth back surface, utilizing an additional spatial dimension to resolve the space limitation problem.
2Area of stationary object
If hard material bodies are joined to the tooth back, then sufficient welding space is available, but the cutting geometry must be formed by additional grinding
Solution Approach 1:
The patent applies preliminary action by performing the grinding operation before the welding process. The hard material body is ground to its final cutting geometry shape prior to being joined to the tooth back, eliminating the need for post-welding grinding and reducing overall process complexity.
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
This method allows for a more efficient and precise attachment of hard material bodies to saw blade teeth, enhancing cutting and sliding properties without the need for additional grinding post-attachment, and enabling the use of saw blades with varied tooth designs.
Implementation Method 1
at least one welding introduction attachment protruding from a joining surface of the tooth is formed on the tooth back of each tooth of the saw, the welding introduction attachment being melted or melted down when a welding pulse is introduced
Implementation Method 2
the joining device is a welding device having a welding electrode, and each hard material body and each tooth are joined to one another by welding, in particular resistance welding
Data Source
AI summary
The invention relates to a method for joining hard material bodies to teeth of a saw blade, in particular of a band saw blade or circular saw blade, wherein each tooth has a tooth face and a tooth back, and the method includes steps of bringing each tooth of the saw blade into a working region, guiding each hard material body toward the tooth located in the working region, advancing a joining device into the working region, joining the hard material body to the tooth located in the working region, and withdrawing the joining device out of the working region. According to the invention, each hard material body is joined to the tooth back of each tooth.