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Compensator - Remote Center Compliance Devices

Compensator - Remote Center Compliance Devices
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Compensator - Remote Center Compliance Devices

Product catalog summary
Product Overview
The Compensator is a Remote Center of Compliance (RCC) device designed to correct alignment errors in automated assembly applications, particularly for peg-in-hole tasks. It utilizes elastomer shear pads that are axially stiff and laterally compliant, allowing for automatic correction of misalignments and reducing contact force to prevent galling and jamming. This mechanical solution is ideal for high-speed automated machines.

Key Benefits
  • Reduces scrap, downtime, and machine damage.
  • Prevents jamming, wedging, and galling.
  • Enhances productivity in automatic assembly.
  • Lowers costs due to relaxed tolerances.
  • Replaces traditional centering mechanisms.
  • Enables previously impossible assemblies.

Features
  • Low lateral stiffness for reduced insertion force.
  • Hardened steel overload pins for crash protection.
  • Variety of elastomer shear pads resistant to oil and coolant.
  • Cost-effective single-stage design.
  • Optional pneumatic Lock-up feature.

Applications
  • Part location in machines.
  • Gear and shaft assembly.
  • Assembly line positioning.
  • Mold alignment.
  • Drive assembly bearings.
  • Washer and shaft assembly.
  • Fan and motor shaft assembly.
  • Speedometer staking operations.

Standard Compensator Design
The Compensator is a single device with all components within its diameter, featuring anodized aluminum plates, hardened steel pins, and elastomer shear pads. Different sizes use varying numbers of shear pads for strength and stiffness.

Shear Pad Specifications
Shear pads are made with a proprietary process that bonds elastomer with metal shims, offering high compression stiffness and long fatigue life. Models vary in lateral and axial stiffness, oil resistance, and temperature range.

Functionality
The Compensator provides compliance in lateral, cocking, and torsional directions while remaining stiff in compression. It can be mounted using tapped holes or bolting through the top plate.

Selection Process
  1. Compare assembly misalignment with allowable misalignment.
  2. Calculate the optimum Center-of-Compliance (C-of-C).
  3. Determine required load capacity.
  4. Minimize insertion force.
  5. Consider environmental factors affecting shear pad performance.

Lock-up and Sensing Options
The Lock-up option locks the Compensator rigidly, reducing vibration and extending shear pad life. Lock sensing provides a lock signal by monitoring the lock-up screw or bearing plate position.

Specifications and Product Details
The document details specifications for various models, including size, load capacity, and configuration options. It also covers lock sensing and lock-up features, as well as shear pad locations and types.

Ordering Information
Instructions for ordering products include options for lock sensing, lock-up, and shear pad configurations, specifying availability for different product sizes.

Product Drawings and Installation Notes
Includes detailed drawings and installation notes for various models, emphasizing customer interface points, mounting options, and sensor cable accommodations.

Additional Products
Brief descriptions of other ATI products, such as tool changers, sensors, and deburring tools, designed for specific applications like high-payload automation and damage prevention.

Company Profile
ATI Industrial Automation is a leading developer of robotic peripheral devices and sensors, committed to quality, innovation, and customer satisfaction through continuous product improvement.

Contact Information
Contact details for ATI Industrial Automation, including address, phone numbers, fax, and email for inquiries.
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Catalog excerpts

Compensator - Remote Center Compliance Devices-1

Compensator RCC - Remote Center Compliance Device

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Compensator - Remote Center Compliance Devices-2

COMPENSATOR Product Description The Compensator is a Remote Center of Compliance (RCC) device designed to correct alignment errors with peg-in-hole automated assembly applications. The Compensator is engineered to project a compliancecenter (also known as center-of-compliance) forward by using three or more elastomer shear pads. These shear pads are stiff axially and compliant laterally. When the contact point is near the center-of-compliance, the part will automatically correct lateral and rotational misalignment reducing the contact force and preventing galling and jamming. Because the Compensator...

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Compensator - Remote Center Compliance Devices-3

Standard Compensator Other options: The Compensator consists of a single device with all components contained within the unit's outside diameter and includes two high-strength anodized aluminum top and bottom plates, hardened alloy steel overload pins and elastomer bonded shear pads. The 000 and 100 size Compensators use 3 shear pads. The 200 size uses either 3 or 6 shear pads. The 400 size uses 6 or 12 shear pads. Adding extra shear pads when possible will increase strength and stiffness. Lock-up for reducing vibration due to inertia, protecting the shear pads and decreasing cycle time. Units...

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Compensator - Remote Center Compliance Devices-4

COMPENSATOR How it Works The Compensator fits between an assembly machine (e.g. pick and place machine) or robot and a tool (e.g. gripper), providing compliance in the lateral, cocking and torsional directions; yet it is stiff in compression, allowing the force from the assembly machine or robot to transfer to the part for assembly. Compensators have two options for interfacing to an assembly machine or robot. Units can be mounted by using the tapped holes on the robot side (top plate) or by bolting through the robot side (top plate) to the robot or assembly machine. The tool side (bottom plate)...

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Compensator - Remote Center Compliance Devices-5

Intended Use The Compensator is intended to be used in "peg-in-hole" type operations in the vertical orientation. The peg-inhole example is an application involving the insertion of one part into another. There are a variety of peg-in-hole type applications that include: dowel pin insertion, mold alignment, washer insertion, bearings into housings, and shafts into bearings. If the Compensator is used in the horizontal orientation, over time the shear pads will develop sag. Rubber and most rubber-like materials have memorization characteristics. Over time the rubber material memorizes the repeated...

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COMPENSATOR Compensator Selection (continued) 2) Calculate the optimum Center-of-Compliance (C-of-C): Calculate the total distance, (L), from the tool side (bottom) plate of the Compensator to the initial contact point of the part being inserted (see diagram on the right). Take into account any interface plates. Select the model with a C-of-C within 30% of the distance L. It is better to have a C-of-C below the insertion point than above. If the fit between the peg and hole is loose, a model with a C-of-C within 60% of distance L is allowable. 3) Determine the required load capacity: Observe...

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Compensator - Remote Center Compliance Devices-7

LOCK - UP AND LOCK SENSING OPTIONS Description The Lock-up option is a pneumatically-driven device that “pulls” the bottom plate toward the top plate while centering the bottom plate to a repeatable location. Varying the air pressure varies the “pull” When . activated, the Lock-up option locks the Compensator rigid, reducing vibration due to inertia. When the Lock-up is deactivated the Compensator is fully compliant. Units equipped with lock-up are recommended to use a supply of clean, dry and non-lubricated air from 60 to 120 psi (4.1 to 8.3 bar). In severe locking conditions, the air supply...

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Compensator - Remote Center Compliance Devices-8

SPECIFICATIONS Metric Units Size 000 100 200 400* Weight w/(3) Shear Pads (N) Standard w/Lock-up & Sensor 1.3 2.2 3.6 12.3 Standard Units Overall Size (in) Size D H Weight w/(3) Shear Pads (lbs) Standard w/Lock-up & Sensor Allowable Misalignment (Standard) Lateral (mm) Cocking (rad) Torsion (rad) 0.017 0.019 0.019 0.006 Allowable Misalignment (Standard) Lateral (in) Cocking (degree) Torsion (degree) 0.0065 0.085 0.085 0.085 Standard Units Model Number Maximum Load Capacities Vertical (lbs)* Horizontal (lbs)* Compression (lbs) Cocking (in-lbs) Stiffness Lateral (lbs/in) Cocking (in-lbs/rad) VISIT...

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Compensator - Remote Center Compliance Devices-9

9116 COMPENSATOR Lock Sensing (100, 200 & 400 sizes only) P: PNP Proximity switch N: NPN Proximity switch S: Sensor ready (customer supplied sensor) Blank: No Lock sensing Lock-up L: Lock-up Blank: No Lock-up Shear Pad Location A: (3) shear pads on inner bolt circle (000 and 200 sizes only) B: (3) shear pads on outer bolt circle (100 and 200 sizes only) C: (6) shear pads, (3) on inner and (3) on outer bolt circle (200 size, 400 size - equally spaced on bolt circle) D: (12) shear pads equally spaced on bolt circle (400 size only) Shear Pad (Refer to the tables on page 3 for more information) 01:...

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Compensator - Remote Center Compliance Devices-10

PRODUCT DRAWINGS (2) Slip Fit Hole Thru for 4 Dowel Equally Spaced Customer Interface (2) Slip Fit Hole Thru for 4 Dowel Equally spaced Customer Interface M4 SHCS Thru (See Note 1) (3) M5-0.8 Tapped Hole Equally spaced Customer Interface (See Note 1) (3) M5-0.8 Tapped Hole Equally spaced Customer Interface (See Note 1) ROBOT SIDE TOOL SIDE Notes: 1. Also option of using M4 SHCS thru the M5 tapped hole for mounting. Mounting hardware not provided. 2. Unit shown with optional lock-up. Hardened Steel Overload Pin Metric Lock-up Screw Lock-up Screw Bushing SECTION B-B ATI INDUSTRIAL AUTOMATION (6)...

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Compensator - Remote Center Compliance Devices-11

(2) Slip Fit Hole Thru for 5 Dowel Customer Interface 45 (2) Slip Fit Hole Thru for 5 Dowel Customer Interface Lock Sensor Location Robot Side Lock Sensor Cable (See Note 2 & 3) M5 SHCS Thru (See Note 1) (6) Tapped M6x1.0, Thru Equally Spaced Customer Interface (See Note 1) (6) Tapped M6x1.0, Thru Equally Spaced Customer Interface (See Note 1) Tool Side Notes: 1. Also option of passing M5 SHCS thru M6 tapped hole for mounting. Mounting hardware not provided. 2. Robot side interface must accommodate sensor cable. Recommended sensor cable exit slot dimensions, 6mm wide by 9mm deep. 3. Unit shown...

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*Prices are pre-tax. They exclude delivery charges and customs duties and do not include additional charges for installation or activation options. Prices are indicative only and may vary by country, with changes to the cost of raw materials and exchange rates.