Bit Attachment Assembly with Impact Buffering and Spline Locking
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Solution Overview
Problem
Existing bolt tightening modules cause damage to connected parts due to high impact force and struggle with maintaining a firmly installed state while ensuring ease of disassembly and assembly, leading to potential safety hazards.
Innovation Solution
A bit attachment device with a buffer assembly and spline structure that mitigates impact force and facilitates stable connection through an attaching sleeve and disassembling-attaching assembly, allowing for easy disassembly and assembly.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If a cylinder is used to drive the bit to rotate and advance for bolt locking, then the bolt locking efficiency is improved, but the impact force generated causes damage to parts connected by bolts
Solution Approach 1:
A buffer assembly is introduced between the movable rod and the attaching sleeve to cushion the impact force generated during bolt locking. The buffer assembly includes a buffer member that can deform elastically under impact, thereby reducing the harmful effects on connected parts while maintaining the efficiency of the bolt locking process
2Ease of operation
If a disassembling-attaching assembly is mounted with the bit, then the ease of disassembly and assembly is improved, but the assembly cannot maintain a firmly installed state under high impact force
Solution Approach 1:
The attaching assembly is divided into separate components: an attaching sleeve, a disassembling-attaching assembly with attaching shaft, and a bit. The attaching shaft features a spline structure that engages with corresponding splines in the attaching sleeve, allowing for easy disassembly and assembly while maintaining a firmly installed state during operation. The buffer assembly further segments the force transmission path to protect these components from impact damage
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
Reduces damage to connected parts, enhances safety and stability, and simplifies the disassembly process while maintaining a firmly installed state, with a compact design that reduces production costs.
Implementation Method 1
a spring for abutting against the movable rod and a spring sleeve; one end of the spring sleeve is open to install the spring
Data Source
Figure 1~2
Figure 3
AI summary
The present utility model provides a bit attachment device and a tightening module. The bit attachment device comprises an attaching sleeve, a disassembling-attaching assembly and an abutting assembly arranged in sequence. A first end of the attaching sleeve is attached to a movable rod within the tightening module via a buffer assembly, so as to synchronize with movement of the movable rod. The disassembling-attaching assembly includes an attaching shaft whose first end forms a tight fit with a second end of the attaching sleeve via a spline structure, and the second end of the attaching shaft is attached to a bit. The abutting assembly can be movably provided at a position located on an outer periphery of the second end of the attaching sleeve, so that it can abut against the attaching shaft in a radial direction, or move toward a direction away from the attaching sleeve to loosen the attaching shaft, and with the above-mentioned buffer assembly, the impact force of the structure to be locked when the bolt is installed can be mitigated. In addition, the disassembling- attaching assembly connected with the bit and the attaching sleeve are connected by the spline structure, which enables the disassembling-attaching assembly to maintain a firmly installed state when the tightening module is in use while ensuring the ease of disassembly and assembly.