SMC Networks LEHR Series Operation Manual

Electric gripper for collaborative robots

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No.DOC1061274
NN64311600
PRODUCT NAME
Electric Gripper for Collaborative Robots
MODEL / Series / Product Number
LEHR Series

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Table of Contents
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Summary of Contents for SMC Networks LEHR Series

  • Page 1 No.DOC1061274 NN64311600 PRODUCT NAME Electric Gripper for Collaborative Robots MODEL / Series / Product Number LEHR Series...
  • Page 2: Table Of Contents

    Contents Safety Instructions ..........2 1.Precautions for product ........4 1.1 Design ..................4 1.2 Mounting .................. 7 1.3 Handling ................. 10 1.4 Operating environment ............14 1.5 Precautions for wiring and cable ........15 1.6 Maintenance ................16 2. Outlines of Product ..........17 2.1 How to Order ................
  • Page 3: Safety Instructions

    Safety Instructions These safety instructions are intended to prevent hazardous situations and/or equipment damage. These instructions indicate the level of potential hazard with the labels of “Caution,” “Warning” or “Danger.” They are all important notes for safety and must be followed in addition to International Standards (ISO/IEC) , and other safety regulations.
  • Page 4 Safety Instructions Caution We develop, design, and manufacture our products to be used for automatic control equipment, and provide them for peaceful use in manufacturing business. Use in non-manufacturing business is not covered. Products we manufacture and sell cannot be used for the purpose of transactions or certification specified in the Measurement Act.
  • Page 5: 1.Precautions For Product

    1.Precautions for product 1.1 Design Warning Be sure to read the Operation Manual (this manual). ① Handling or usage/operation other than that specified in the Operation Manual may lead to breakage and product failure. Any damage attributed to the use beyond the specifications is not guaranteed. There is a possibility of dangerous sudden action by the product if sliding parts of machinery ②...
  • Page 6 ⑪ Keep the specified gripping point. If the specified gripping range is exceeded, excessive moment is applied to the sliding part of the finger, which may have an adverse affect on the life of the product. L: Gripping point distance H:Overhang ⑫...
  • Page 7 ⑯ Select the model that allows for penning and closing width relative to a work piece. The selection of an inappropriate model will cause gripping at unexpected positions due to variable opening and closing width of the product and the diameter of a work piece the product can handle. It is necessary to make a larger stroke to overcome backlash created when the product will open after gripping.
  • Page 8: Mounting

    1.2 Mounting Warning Install and operate the product only after reading the Operation Manual carefully and ① understanding its contents. Keep the manual in a safe place future reference. Observe the tightening torque for screws. ② Tighten the screws to the recommended torque for mounting the product. Do not make any alterations to this product.
  • Page 9 The mounting face has holes and slots for positioning. Make use of them if necessary. ⑭ ⑮ When the work piece has to be removed after the power has been switched off, it can be removed by using the manual override or by removing the finger attachments. If the manual override is used to remove the workpiece allow sufficient space to access the manual override screw.
  • Page 10 Stroke end when gripper is moving. ⑱ When mounting a work piece, align it with the product carefully to prevent excessive force to the finger. In particular, during a trial run, operate the product manually or at a low speed and check that the safety is assured without impact.
  • Page 11: Handling

    1.3 Handling Warning Do not touch the motor while in operation. ① The surface temperature of the motor can increase to approx. 80oC due to operating conditions. Energizing alone may also cause this temperature increase. As it may cause burns, do not touch the motor when in operation.
  • Page 12 ⑮ Radiant heat from strong heat sources, such as a furnace, direct sunlight, etc., should not be applied to the product. It will cause failure of the electric actuator or its peripheral devices. Do not use the product in an environment subject to a temperature cycle. ⑯...
  • Page 13 ⑩ When gripping a workpiece, always use Grip command. Always use Grip command when the finger "attachments" come into contact with each other at the initial stroke position 0 mm. Also, do not hit the work piece to the finger and attachment in positioning command or in the range of positioning command.
  • Page 14 ⑰ Self-lock mechanism The product keeps a gripping force due to the self-lock mechanism in the lead screw. Also, it will not operate in opposite direction even when external force is applied during gripping. If there is the reduction of gripping force seen in the product after a work piece has been gripped and deformed over certain amount of time, contact SMC.
  • Page 15: Operating Environment

    1.4 Operating environment Warning ① Avoid use in the following environments. 1.Locations where a large amount of dust and cutting chips are airborne. 2.Locations where the ambient temperature is outside the range of the temperature specification (refer to specifications). 3.Locations where the ambient humidity is outside the range of the humidity specification (refer to specifications).
  • Page 16: Precautions For Wiring And Cable

    1.5 Precautions for wiring and cable Warning Adjustment, installation, inspection, or wiring changes should be conducted after the power ① supply to this product has been turned off. Electrical shock, malfunction, or damage can result. Never disassemble the cable. ② Never connect or disconnect the cable or connector with the power on.
  • Page 17: Maintenance

    1.6 Maintenance Warning ① Do not disassemble or repair the product. Fire or electric shock can result. Contact SMC, in case of disassembly for the maintenance. Before modifying or checking the wiring, the voltage should be checked with a tester 5 ②...
  • Page 18: Outlines Of Product

    2. Outlines of Product 2.1 How to Order...
  • Page 19: Specification Table

    2.2 Specification Table Open and close stroke/both sides [mm] Gripping force[N]*1 60~140 Open and close speed/ 5~100 / 5~30 Gripping speed [mm/s] Drive method Slide screw + Belt Finger guide type Sliding bearing 0.5 or less Actuator specifications Finger backlash/ one side [mm] Positioning repeatability/one side [mm] ±0.1 0.5 or less...
  • Page 20: Dimensions

    2.3 Dimensions Basic type/LEHR32K2-50A...
  • Page 21 Longitudinal type/LEHR32K2-50B...
  • Page 22: Construction

    2.4 Construction Description Material Note Top cover Aluminum alloy Coating Side cover Synthetic resin Coating Bottom cover Synthetic resin Coating M8 Connector - - Tool plate Aluminum alloy Anodized Main plate assembly - Finger Aluminum alloy Anodized Guide rod Alloy steel Hard chrome plating Slide shaft assembly -...
  • Page 23: Led Lamp Indicator

    2.5 LED lamp indicator The status of the Electric Gripper for Collaborative Robot can be checked via the LED lamp. The LED lamp indicates the gripper status as follows. Normal operation Status Pattern Magenta Green Cyan Blue White Yellow Servo OFF Servo ON Operation in progress Gripping operation in progress...
  • Page 24: Connector Pin Layout

    2.6 Connector pin layout The pin layout of the M8 connector is shown below. 2.7 Replacement Parts Connector cable Robot Symbol Part No. manufacturer UNIVERSAL RMH-A00-11-A ROBOTS Main Plate Assembly Robot Symbol Part No. manufacturer UNIVERSAL RMTM2-4M1 ROBOTS...
  • Page 25: Position Of The Center Of Gravity

    2.8 Position of the center of gravity LEHR32K2-50B LEHR32K2-50A Center of gravity [mm] LEHR32K2-50A LEHR32K2-50B...
  • Page 26: Installation

    3.Installation Warning Install and operate the product only after reading the Operation Manual carefully and understanding its contents. Also, keep the manual where it can be referred to as necessary. When installing the products, allow access for maintenance. Do not scratch or dent the air gripper by dropping or bumping it when mounting. Slight deformation can cause inaccuracies or a malfunction.
  • Page 27 ◼ How to mount attachment. When attaching or detaching the finger attachment, install them within the tightening torque range shown in the table below. Set the tightening torques to appropriate torque values based on the attachment. Max. tightening Screw torque M4x0.7 1.65 N・m ◼...
  • Page 28: Alarm Detection

    4.Alarm detection The detection of an alarm/warning is indicated by the LED lamp on the actuator and "Alarm Code" on the dedicated teaching pendant. For details of the alarms/warnings, refer to the table below.
  • Page 29 Alarm Code Status Content Countermeasures This alarm is issued after a certain time has elapsed Eliminated the cause of load OverLoad alarm Overload alarm from the occurrence of a warning load warning. Check whether there is any factor that prevents This alarm is issued when a OverCurrent Over current...
  • Page 30: Definition Of Terms

    5. Definition of Terms Grip command ① Command from the collaborative robot to instruct the Electric Gripper for Collaborative Robot to perform gripping. Positioning command ② Command from the collaborative robot to instruct the Electric Gripper for Collaborative Robot to perform an opening/closing action. Activate command ③...
  • Page 31 Revision history December 2023:Frist edition 4-14-1, Sotokanda, Chiyoda-ku, Tokyo 101-0021 JAPAN Tel: + 81 3 5207 8249 Fax: +81 3 5298 5362 URL https://www.smcworld.com Note: Specifications are subject to change without prior notice and any obligation on the part of the manufacturer. ©...

This manual is also suitable for:

Lehr32k2-50aLehr32k2-50b

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