Firearm Bedding Block Cam Surface Rigidity
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing firearm bedding blocks fail to provide sufficient horizontal, vertical, longitudinal, and torsional rigidity, allowing unacceptable movement between the receiver, barrel, and stock, which compromises shooting accuracy.
Innovation Solution
A bedding block with a front recoil lug receptacle featuring laterally extending stepped ribs and a rear recoil lug receptacle with a truncated ovoid bore, designed to center and securely fasten recoil lugs, providing enhanced rigidity through interference fits and material conformity under firing forces.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If conventional bedding blocks are used to mount the receiver and barrel on the stock, then the components are secured in position, but unacceptable movement is still permitted which compromises shooting accuracy
Solution Approach 1:
The patent employs curved cam surfaces on the recoil lugs that interface with corresponding receptacles in the bedding block. The cam surfaces convert linear recoil forces into rotational moments, creating a self-centering mechanism that maintains precise component alignment. This curvature-based design eliminates unacceptable movement while allowing controlled rotation to accommodate firing forces.
Solution Approach 2:
The patent utilizes the dynamic change in geometric parameters during firing - specifically the conversion of linear recoil displacement into rotational motion through cam mechanisms. The receptacles are designed with specific cam profiles that transform the direction and magnitude of forces, maintaining optimal contact surfaces and positioning under varying load conditions.
2Stability of the object's composition
If the bedding block provides rigid mounting to minimize movement, then accuracy is improved, but the block must withstand considerable horizontal, vertical, longitudinal, and torsional forces
Solution Approach 1:
The patent designs a dynamic mounting system where the cam surfaces and receptacles allow controlled rotation and movement during firing. Rather than rigid fixed positioning, the system adapts to firing forces by converting linear recoil into rotational motion, maintaining strength and stability while accommodating the dynamic loads generated during shot firing.
Solution Approach 2:
The geometric parameters of the cam surfaces and receptacles are specifically designed to change under load, transforming the stress distribution. The cam profiles are engineered to convert high-magnitude linear forces into manageable rotational moments, reducing the strength requirements on the bedding block while maintaining position stability.
3Stability of the object's composition
If the receiver and barrel are rigidly fastened to the stock, then component position is maintained, but firing forces still cause position changes that affect accuracy
Solution Approach 1:
The patent replaces rigid fastening with a dynamic cam-based mounting system. The cam surfaces on the recoil lugs interface with receptacles that allow controlled rotation during firing. This dynamic mechanism absorbs and redirects firing forces, preventing the position changes that would otherwise occur with rigid fastening while maintaining accurate component alignment.
Solution Approach 2:
The cam surfaces and receptacles act as intermediary elements between the receiver assembly and the stock. Rather than direct rigid contact, the cam mechanisms mediate the force transmission, converting harmful linear recoil forces into useful rotational motion that maintains positioning while protecting the bedding block from excessive stresses.
Data Source
AI summary
A bedding block for securing a receiver frame includes a front recoil lug receptacle having a forward cam surface with laterally extending stepped ribs and a rearward bearing surface, and a rear recoil lug receptacle having a truncated ovoid bore.