Laser Tool Transmission with Dovetail Guide and Planetary Gears
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Solution Overview
Problem
Traditional laser tools suffer from low transmission accuracy, unstable transmission, significant backlash, high assembly complexity, high costs, large size, high energy consumption, and high noise due to their single-stage or multi-stage gear structures.
Innovation Solution
A transmission system for laser tools incorporating a guide rail with dovetail grooves, an output wheel with dovetail tenons, and a two-stage planetary gear structure, including sun gears, planetary gear sets, and internal ring gears, which enhances smoothness, reliability, and stability while reducing assembly complexity and improving load-bearing capacity.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If traditional single-stage or multi-stage gears are used in transmission structure, then the device can be implemented, but transmission accuracy is low and backlash is significant
Solution Approach 1:
The patent replaces the traditional multi-stage gear mechanical transmission system with a planetary gear mechanism combined with a belt transmission system. This substitution eliminates significant backlash while maintaining transmission stability, as the planetary gear structure provides precise angular positioning and the belt transmission ensures smooth power transfer without the cumulative errors inherent in multi-stage gear assemblies.
Solution Approach 2:
The patent employs a planetary gear mechanism where planet gears are nested around a central sun gear, with multiple planetary gears arranged in a circular pattern. This nested configuration allows for compact design while achieving high transmission accuracy through the inherent mechanical advantage and load distribution of the planetary arrangement, eliminating the need for multiple separate gear stages.
2Ease of manufacture
If multi-stage gears are used, then transmission can be achieved, but assembly process is highly demanding and processing requirements are very high
Solution Approach 1:
The patent divides the transmission system into distinct functional modules: a planetary gear module for precision positioning and a belt transmission module for power transfer. This segmentation simplifies the assembly process by allowing each module to be pre-assembled and tested independently, then integrated into the final system, reducing the overall assembly complexity compared to a monolithic multi-stage gear system.
Solution Approach 2:
The planetary gear mechanism serves multiple functions simultaneously: it provides torque multiplication, precise angular positioning, and compact size. The belt transmission system handles both power transfer and tensioning functions. This multi-functionality reduces the number of separate components needed, simplifying both manufacturing and assembly processes while maintaining transmission effectiveness.
3Volume of moving object
If traditional gear structures are used, then transmission is achieved, but size is large and energy consumption is high
Solution Approach 1:
The planetary gear mechanism nests multiple planet gears around a central sun gear within a compact carrier structure, achieving high torque multiplication and precise positioning in a small volume. This nested arrangement eliminates the need for multiple separate gear stages that would increase the overall transmission system size, while the high mechanical efficiency of the planetary configuration reduces energy losses.
Solution Approach 2:
The patent replaces traditional multi-stage gear trains with a planetary gear mechanism combined with belt transmission, which achieves the same transmission ratio in a more compact configuration. The planetary gears provide torque multiplication with fewer stages, reducing the cumulative length of the transmission path and associated energy losses from friction and misalignment.
4Object-generated harmful factors
If traditional gear structures are used, then transmission is achieved, but noise is high
Solution Approach 1:
The patent replaces traditional multi-stage gear transmission with a planetary gear mechanism combined with belt transmission. The planetary gears, with their multiple contact points and distributed load, generate less noise than sequential gear stages. The belt transmission portion provides smooth, quiet power transfer without the tooth meshing noise characteristic of traditional gear systems, while maintaining stable transmission through the combined mechanical advantage of both systems.
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 system improves transmission accuracy, stability, and reliability, reduces backlash and assembly difficulty, and enhances dust and water resistance, optimizing user experience by ensuring consistent revolution clearance and reducing impact damage.
Implementation Method 1
an end of the output wheel cooperating with a guide rail has a ring of dovetail tenon, the dovetail tenon being embedded in a dovetail groove on a guide rail and conforming, the output wheel sliding along a closed path of the guide rail upon actuation of the drive structure
Implementation Method 2
the first planetary gear set, through the first planetary gear shaft, drives the first planetary carrier to rotate; the second planetary gear set mounted on a second carrier through a second planetary gear shaft, the second planetary gear set meshing with a sun gear shaft on a first carrier
Data Source
AI summary
The utility model provides a transmission system for a laser tool comprising a guide rail, an output wheel, a transmission structure and a drive structure. The guide rail is in fitted connection with the output wheel, the guide rail has a dovetail groove formed therein, the dovetail groove forms a closed path for defining and guiding the output wheel, an end of the output wheel that mates with the guide rail has a ring of dovetail shaped tenon that fits into a dovetail shaped groove on the guide rail, the output wheel sliding along the closed path of the guide rail upon actuation of the drive structure. The transmission structure has at least a two-stage planetary structure. The utility model improves the load carrying capacity of the transmission structure, smoothness of the output wheel, slew clearance consistency and reliability, and improves operability while reducing assembly difficulty of the transmission system.