mech

+

+# motor-shaft-dat

+

+## D-Shaped

+

+### 🔧 1. D-Shaped Clamping Hub (Best Balance of Strength + Simplicity)

+

+Why: The flat face prevents slipping; the clamp applies even pressure all around the shaft without damaging it.

+

+Torque Handling: Very good — suitable for most high-torque hobby and light industrial setups.

+

+

+### 2. D-Shaft Gear/Pulley with Dual Set Screws

+Why: Set screws bite into the flat and round sides of the shaft. Dual screws reduce slippage.

+

+Torque Handling: Medium-high (depends on the hub material and screw torque).

+

+## Key Type == 键槽联轴器

+

+

+

+## ref

+

+- [[flange-dat]] - [[mechanics-dat]]

+

+# rocker-switch-dat

+

+- [[KCD4-dat]]

+

+## 6P 3-Position Rocker Switch Overview == K4D

+

+### 🧩 Terminology

+

+- **Rocker Switch**: A type of switch that rocks back and forth like a seesaw. Pressing one side causes the other to rise.

+- **6P (6 Pin)**: The switch has 6 terminals (pins) for wiring.

+- **3-Position**: The switch has three selectable states, typically:

+ - **ON - OFF - ON**

+ - **Position 1 - Center (OFF) - Position 2**

+ - Or used for **Forward - Stop - Reverse** in motor control applications.

+

+---

+

+### ⚙️ Wiring Diagram (ON - OFF - ON Type)

+

+

+ ┌────────┬────────┬────────┐

+ │ Pin 1 │ Pin 3 │ Pin 5 │ ← Common / Input

+ ├────────┼────────┼────────┤

+ │ Pin 2 │ Pin 4 │ Pin 6 │ ← Output (depends on position)

+ └────────┴────────┴────────┘

+

+- Position 1 (Left): Pin1 → Pin2, Pin3 → Pin4 connected

+- Center (OFF): All pins disconnected

+- Position 2 (Right): Pin1 → Pin6, Pin3 → Pin4 connected

+

+

+

+## Hacked KCD4 switch to switch directions

+

+

+

+

+

+### 🧠 Switch Pin Layout (Bottom View)

+

+```

+ ┌────---───┬────---───┬───---────┐

+ │ Pin 1 M1 │ Pin 3 V+ │ Pin 5 M2 │

+ ├────---───┼───---────┼───---────┤

+ │ Pin 2 M2 │ Pin 4 V- │ Pin 6 M1 │

+ └────---───┴───---────┴───---────┘

+

+Motor: [ Pin 1 ]——Motor——[ Pin 2 ]

+Power: [ Pin 3 = +V ] [ Pin 4 = –V ]

+Bridges: Pin1 = Pin6, Pin2 = Pin5 (internal)

+```

+

+---

+

+### 🚦 Switch Behavior

+

+| Switch Position | Internal Connection | Motor Polarity | Motor Direction |

+| --------------- | ------------------- | -------------------- | --------------------- |

+| Position 1 | Pin 3 → Pin 1 (+) | | |

+| | Pin 4 → Pin 2 (–) | + to Motor A, – to B | **Clockwise (CW)** |

+| Center (OFF) | No connection | Motor disconnected | **Stopped** |

+| Position 2 | Pin 3 → Pin 2 (+) | | |

+| | Pin 4 → Pin 1 (–) | + to Motor B, – to A | **Counter-Clockwise** |

+

+---

+

+### ✅ Summary

+

+This switch setup allows you to:

+- Toggle a **DC motor forward/reverse**

+- Stop the motor in the **center OFF** position

+- Use only **6 pins**, no extra relays or logic

+

+

+

+## ref

+

+- [[rocker-switch]]

+- [[button-dat]] - [[switching-dat]] - [[switch-dat]]

+

+

+# flange-dat.md

+

+A flange is a protruding rim, lip, or ridge used for various purposes, including fixing, strengthening, guiding, or connecting. It can be a flat surface sticking out from an object, or a decorative edge on clothing.

+

+

+

+

+## shaft coupling flange set == set-screw flange

+

+The image shows a shaft coupling flange set, typically used to connect a motor shaft to a wheel, gear, or other rotating component. The screw part in this flange assembly refers to the grub screws (set screws) shown next to the hex key (Allen wrench).

+

+Breakdown of the parts:

+

+**Grub screws (set screws):**

+These are the small black screws included in the image. They are inserted into the threaded side holes of the flange (visible on the cylindrical hub) to secure the shaft in place.

+

+Function:

+

+Once the shaft is inserted into the flange's central hole, the grub screws are tightened using the included hex key to clamp the shaft securely, preventing it from slipping.

+

+These components are commonly used in RC cars, robotics, CNC machines, and 3D printers for coupling motors to shafts or wheels.

+

+

+

+

+### set-screw flange for 100KG motor

+

+NO, a basic set-screw flange on an 8mm shaft is not recommended to handle 100 kg load especially under torque or dynamic conditions.

+

+Consider:

+

+- A larger diameter shaft (12–16mm)

+- Clamping flanges

+- Keyed shafts

+- Stronger materials

+- Proper bearing support

+

+## Clamping Flange

+

+

+

+

+

+

+

+

+## keyed flange

+

+## Options selection

+

+If possible, use a clamping flange — it’s safer, more secure, and better for D-shafts and higher loads.

+

+If you already have a set screw flange (like in your image), it can work, especially on a D-shaft, but be extra careful with alignment and torque.

+

+## ref

+

+-[[motor-shaft]]

+

+- [[flange]] - [[mechanics]]

+

+## category 2.0

+mechanics-dat

+[[fab-dat]] - [[case-dat]]

+

+[[glue-dat]]

+

+[[motion-system-dat]]

+

+[[mechnical-structure-dat]]

+

+[[bearing-dat]] - [[nut-dat]]

+

+[[CNC-dat]] - [[CAD-dat]]

+

+[[heatsink-dat]]

+

+[[PCB-installation-dat]]

+

+[[mechanic-tools-dat]]

+

+[[copper-spacer-dat]]

+

+[[Pneumatic-cylinder-dat]]

+

+[[Lead-screw-dat]]

+

+- [[flange-dat]]

+

+## category 2.0

+

+### Common Mechanical Parts

+

+Key - Magnet - Spring - Seal Ring - Shaft Collar/Metal Washer/Shim - Split Pin/Cotter Pin - Pipe Fittings - Scale Ruler - Oil Nozzle - Probe - Industrial Brush

+

+### Linear Motion Parts

+

+Guide Shaft - Guide Shaft Bracket - Linear Bearing - Aluminum-Plastic Linear Bearing - Oil-Free Bushing - Linear Rail - Cross Roller Guide/Slide - Ball Screw - Ball Screw Support Assembly - Trapezoidal Screw/Screw Related Parts - Spline - KK Module/Single-Axis Driver - Aluminum Base Linear Module - Rail-Embedded Linear Module - Linear Motor Module - Positioning Stage - Cable Drag Chain - Machine Tool Protective Cover

+

+### Transmission Components

+

+Coupling/Universal Joint - Timing Belt - Timing Pulley - Flat Belt/Round Belt - Roller - Gear/Rack - Sprocket/Chain - Pulley/Idler - Drum - Roller Strip - V-Belt·V-Belt Pulley - Multi-Wedge Pulley·Multi-Wedge Belt - Universal Ball - Mounted Bearing - Bearing - Joint/Rubber-Coated Bearing·Bearing Follower - Bearing Accessories - Shaft

+

+### Door Parts/Casters/Feet

+

+Handle - Grip - Handwheel - Hinge - Industrial Slide Rail - Pull Handle - Sealing Clasp - Latch - Hasp - Ball Latch - Magnetic Catch - Hook - Support Rod - Door Lock - Sealing Strip - Foot Cup - Caster - Leveling Wheel - Connector - Monitor Bracket

+

+### Fasteners

+

+Lifting Eye - Screw - Combination Parts - Nut - Retaining Ring - Washer - Screw with Stop Block - Bolt - Stud - Resin Parts - Positioning Ball/Positioning Pin - Riveting Parts - Thread Insert

+

+### Positioning Parts

+

+Fixing Ring - Post/Base/Post Fixing Clamp - Positioning Guide Parts - Cantilever Pin/Hinge Pin - Positioning Pin - Positioning Pin Bushing/Fixture Bushing - Indexing Pin/Quick-Release Pin - Clamp

+

+### Pneumatic Components

+

+Air Source Processing Elements - Cylinder - Control Valve/Manifold - Pneumatic Accessories - Air Tube/Hose - Vacuum Suction Cup - Pneumatic Connector/Speed Control Valve - Connection Block - Vacuum Generator - Nozzle

+

+### Industrial Materials/Damping/Heat Insulation

+

+Damping Material - Resin Board/Insulation Board - Sound Insulation and Shock Absorption

+

+### Industrial Control/Low-Voltage Power Distribution/Electrical Accessories

+

+Circuit Breaker/Air Switch - Contactor - Relay - Industrial Power Supply - Push Button Switch/Indicator Light/Buzzer/Button Box - Signal Light/Alarm Light - LED Lighting - Fan - PLC - Touch Screen - Frequency Converter - Measuring Instrument - Filter - Fuse/Fuse Holder - Crimp Terminal - Terminal Block - Switch/Router/Network Cable Accessories - Connector - Cable - Panel Box - Motion Controller - Plug/Socket/Power Strip - Electrical Accessories - Surge Protector - Transformer - Over/Under Voltage Protector - Current Transformer - Isolation Switch - Protective Tube/Flexible Tube/Cable Trunking - Time Relay - Distributed IO/Protocol Gateway/Data Acquisition

+

+### Sensors/Switches

+

+Photoelectric Sensor - Proximity Sensor - Area Sensor - Micro Switch - Limit Switch - Air Pressure Sensor - Temperature Sensor - Force Sensor - Laser Photoelectric Sensor - Fiber Optic Sensor - Color Mark Sensor - Laser Displacement Sensor - Slot-Type Photoelectric Sensor - Safety Light Curtain Sensor - Ultrasonic Sensor - Encoder

+

+### Motor Drives

+

+Stepper Motor - Servo Motor - Servo Stepper Special Accessories - Precision Planetary Reducer == [[dc-gear-motor-dat]] - Angle Rotator - Hollow Rotating Platform - Parallel Reduction Motor - Right Angle Reduction Motor - DD Motor - Cam Divider - Medium-Sized Reducer - RV Reducer - Linear Motor - Three-Phase Asynchronous Motor - Screw Motor - Joint Motor - DC Motor - AGV Special Accessories - Servo Electric Screwdriver - Brushless Reduction Motor - Integrated Stepper Reduction Motor - Drive Integrated Motor

+

+### Tools/Cutting Tools/Fixtures

+

+Measuring Tool - Storage Tool - Manual Tool - Milling Cutter - Tap - Electronic and Electrical Tools - Labor Protection Tools - Flexible Fixture - Machine Tool Fixture - Hand Truck

+

+### Hydraulic Components

+

+Hydraulic Connectors and Pipe Fittings

+

+### Machine Vision

+

+Industrial Camera - Vision Light Source - Controller - Robot End Effector

+

+### Mold Accessories

+

+Stamping Die Standard Parts - Plastic Mold Standard Parts

+

+### Industrial Aluminum Profile and Accessories

+

+Aluminum Profile - Profile Accessories - Conveyor Line and Functional Components - Aluminum Profile Frame - Lean Pipe - Cantilever Accessories - Fast-Speed Chain Profile

+

+### Aluminum Alloy Enclosure

+

+

+

+- how a [[rocker-switch-dat]] to manually connect the motor CW and CCW direction