Clamp and Jig Positioning Technology: Examples of Electric Jigs and Transport Motors
Technical explanation of clamps and jigs for processing and welding. There is a track record of using electric clamp opening and closing control, as well as motors for jig rotation and transportation.
In metal processing (cutting and grinding), welding, and automatic assembly lines, "clamps" and "jigs" are used to securely fix and hold the workpieces in precise positions. They are one of the most important technical elements for maintaining processing accuracy (dimensional tolerances), reducing setup time, and ensuring worker safety. In jig design, it is essential to ensure "holding force (clamping force)" that can withstand processing gravity and cutting resistance, while also preventing excessive tightening that could cause "workpiece distortion or deformation (warping)." The methods include manual toggle clamps, as well as hydraulic and pneumatic clamps suitable for automation, and the increasingly popular "electric clamps." Electric clamps, in particular, are indispensable for smart factory implementation and poka-yoke (error prevention) as they allow for numerical control of clamping force, seat confirmation via sensors, and detection of foreign object entrapment. Kuru Co., Ltd. is not a manufacturer of jigs and clamps themselves, but it has a proven track record of using its own products as motors for actuators that open and close electric clamps and rotate and transport workpieces with the jigs.
basic information
■Main Types of Clamps and Technical Points - Mechanical Clamp (Toggle Type): Simple structure with self-locking capability, but limited to manual operation and single holding force. - Hydraulic and Pneumatic Clamps: Allow for centralized control via piping. Hydraulic clamps offer high clamping force, while pneumatic clamps excel in high-speed operation, but face challenges with fluid leakage and thrust fine-tuning. - Electric Clamp (Motor Driven): Driven by a motor using ball screws or link mechanisms. Torque control allows for optimal tightening pressure according to the workpiece. ■Points for Precision and Stabilization in Jig Design - Reference Surface (3-2-1 Rule): Securely constrain the six degrees of freedom of the workpiece using three contact points, two guides, and one stopper. - Seating Confirmation and Poka-Yoke: Automatically determine whether the workpiece is in full contact with the reference surface using air micro-sensors or electrical signals. ■Motor Adoption Achievements Around Equipment - Precise force control and open/close positioning of electric clamps (Stepping Motor MR Series). - Indexing and swiveling units for rotating welding and assembly jigs (Geared Motor/Brushless).
Price information
By eliminating unnecessary decorations and pursuing an overwhelming balance of price and performance, we achieve significant cost reductions in equipment manufacturing. While keeping prices low, there is no compromise in the core that supports the reliability of the equipment, and we offer overwhelming price advantages comparable to mass production even for small-scale starts of several dozen units.
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Model number/Brand name
MMC Series
Applications/Examples of results
[For various jigs and clamp devices in cutting processing, welding, and automatic assembly lines] - Pallet changers for machining centers and drive units for automatic clamp jigs - Rotational drive for multi-joint arms and swivel jigs in automotive body and frame welding lines - Electric clamp actuators with torque limiting function to prevent deformation of thin-walled aluminum components and resin parts - Control of small pick-and-place jigs in automatic assembly cells for electronic components and precision machinery In the electrification of jigs and improvement of automation lines, we will fully support production technology and equipment design engineers who want to "ensure high torque and precision while keeping motor costs for clamp drives and swivels low" with our proposals for "CLUE (clue to solutions)" and "thoughtful support." Product lineup: - Precision positioning stepping motors (MR series) - Low-voltage brushless motors (including built-in driver types) - Parallel-axis geared motors (PGM series) - Various motor drivers
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CLUW Inc. specializes in low-voltage battery-driven motors and control drivers, offering a comprehensive lineup from compact to high-power models. Our product range includes Brushless DC Motors, Battery-Driven AC Servo Motors, Geared Motors, In-Wheel Motors, and Cooling Fans. Beyond product supply, we deliver dedicated technical support—from driver selection and setup guidance to troubleshooting—ensuring seamless operational integration for our customers.