Portable Boring Machine Flexible Transmission Vibration Damping
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Solution Overview
Problem
Existing portable boring machines face issues with vibration damping due to rigid transmission means, leading to reduced precision and increased effort on machining points, and are often complex, heavy, and difficult to transport, requiring dismantling for relocation.
Innovation Solution
A portable boring machine with a flexible mechanical transmission system comprising a transmission unit and a centralized unit that can be coupled or decoupled, utilizing a distribution block with ring gears and a conical toothing mechanism for smooth motion transfer, along with a blocking system for secure positioning, allowing for separate transportation and easy reconfiguration for different machining operations.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Strength
If rigid transmission means are used to connect the motor to the tool holder shaft, then the structural strength and stability are improved, but the vibrations generated during machining cannot be damped, leading to reduced precision and increased stress on the shaft
Solution Approach 1:
A flexible coupling device is introduced as an intermediary element between the motor shaft and the tool holder shaft. This coupling transmits rotational motion while accommodating vibrations and misalignments, thereby damping vibrations without compromising the strength and stability of the transmission system
Solution Approach 2:
The rigid connection parameter is changed to a flexible connection parameter through the use of elastomeric elements or damped couplings. This allows the system to maintain structural integrity while introducing vibration-damping characteristics that improve machining precision
2Adaptability or versatility
If three motors are used to control rotation during welding, rotation during boring, and advancement of the processing unit, then the functional versatility is improved, but the device complexity and weight increase, making the machine difficult to transport
Solution Approach 1:
A single motor is designed to perform multiple functions by controlling different operations at different times. The motor can drive rotation during welding, rotation during boring, and advancement of the processing unit, thereby reducing the total number of motors from three to one while maintaining full functional versatility
Solution Approach 2:
The system dynamically reconfigures the single motor's function during different operational phases. Through dynamic control mechanisms, the same motor adapts its role to match the current machining requirement, whether it be rotation for welding, rotation for boring, or linear advancement
3Stability of the object's composition
If the machine is designed as a single integrated unit, then the structural stability is improved, but the machine becomes difficult to transport and requires dismantling for relocation
Solution Approach 1:
The machine is divided into separable modular components that can be easily assembled and disassembled. Each module maintains its structural integrity when separated, allowing the machine to be transported in parts and reassembled at the destination without compromising overall structural stability during operation
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 machine achieves improved precision and reduced operator fatigue by damping vibrations and enabling easy transportation and reconfiguration, allowing for efficient boring and welding operations without the need for dismantling, while maintaining precise control over machining processes.
Implementation Method 1
The motor and the shaft are connected by rigid means of transmission, or by means of a couple formed by a helical gear and a worm screw... The advancement assembly includes a second electric motor which, via a gear unit equipped, at the output, with a pinion, an elastic belt, a pulley and a bushing
Implementation Method 2
The motor and the shaft are connected by rigid means of transmission, or by means of a couple formed by a helical gear and a worm screw
Data Source
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AI summary
Portable boring machine (100) comprising: - a transmission unit (101) comprising a first electric motor (103) having an axis of rotation (B) and a distribution block (104) of the motion imparted by said electric motor (103) to a tools shaft (105) supporting means for boring and welding and having an axis of rotation (C); - a centralized unit (102) comprising a supporting shaft (109) for advancement of said tools shaft (105) formed by a hollow cylindrical tube internally comprising an externally threaded screw tube (111), and a second centralized electric motor (110) adapted to manage said advancement; - means (108, 114) for coupling and decoupling said transmission unit (101) from said centralized unit (102); and - an advancement system of said screw tube (111) configured for converting the rotary motion imparted by said electric motor (110) in straight linear motion of said screw tube (111) along said axis (C).