LZ-SG002 Lead Screw Dexterous Hand

Product Overview

1. Core Product Information

· Product Name: Lead Screw Hand (Screw-Driven Dexterous Hand)

· Model: LZ-SG002

· Product Definition: High-precision, high-payload robotic hand driven by coreless motors and ball screws, designed in accordance with human hand manipulation force metrics and industrial requirements for sorting and handling goods.

· Core Functions: Finger mode switching; underactuated adaptive/enveloping grasping; absolute position reading of finger joints; tactile force sensing on fingertips and palm; EtherCAT communication.

· Application Scenarios: Sorting of industrial parts, box handling, automotive parts grasping, etc.

2. Key Technical Parameters

Parameter Category	Parameter Name	Technical Specification	Unit	Remarks
Basic Parameters	Dimensions (L × W × H)	227 × 191 × 72	mm	Excluding connectors
	Total Weight	1.18	kg	/
	Fingertip Force (Rated Value)	30	N	Should operate within rated payload
	Number of Force Sensors per Finger	2	pcs	Center of fingertip / finger pad
	Number of Palm Force Sensors	3	pcs
	Force Sensor Range	0–3000	g	Initial offset of 700
	Force Sensor Resolution	1	g
	Finger Joint Angle Limit	0–90	°	Mechanical limit
	Finger Joint Angle Sensor Accuracy	0.5	°
	Mounting Method	6 × M4 countersunk threaded holes	-
	Protection Rating	/	-	Adapts to operating environment
	Service Life	≥ 2,000,000	cycles	Excluding tendon life (Tendon life test in progress, to be verified upon completion)
Transmission Performance	Lead Screw Rated Load	50	N
Transmission Performance	Transmission Efficiency	≥ 80%	-	Rated operating condition
Motion Performance	Max. Motion Speed	0.7	s	Extension / Fist closure time
	Positioning Accuracy	±1	mm	-
	Repeatability	≤ 1	mm	Room temperature, no load
Electrical Parameters	Power Voltage / Current	DC 48V ± 10%	V	-
	Power Voltage / Current	2A	A
	Communication Protocol	EtherCAT	-	According to configuration
Environmental Parameters	Operating Temperature	10–70	℃	Non-condensing
Environmental Parameters	Relative Humidity	20%–80%	RH	Non-condensing

3. Structure, Installation, and Maintenance

· Key Structural Materials: Outer Casing (6061-T6), Joint Axles (TC4 Titanium Alloy), Pulleys (Brass), Tendons (UHMWPE - Ultra-High-Molecular-Weight Polyethylene), Screws (304 Stainless Steel / Carbon Steel), Pins (Bearing Steel).

· Installation Points: Avoid pulling or yanking cables; prevent impact on sensors.

· Commissioning Steps:

1. Check power supply and grounding;

2. Zero-point calibration;

3. No-load test run;

4. Loaded accuracy testing;

5. Save parameters.

Maintenance Schedule

Maintenance Item	Period	Content
Appearance Cleaning	Daily	Wipe with a dry, soft cloth to remove dust and oil stains
Cable Inspection	Weekly	Check for damage and looseness to ensure reliable connection
Tendon Tensioning	Power-on self-test	Automatically tension tendons
Tendon Inspection & Replacement	Every 300,000 cycles	Check for wear and replace in advance if necessary
Accuracy Inspection	Every 500,000 cycles	Calibrate positioning accuracy; adjust if out of tolerance