timing belt

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timing belt

[′tīm·iŋ ‚belt]
(design engineering)
A power transmission belt with evenly spaced teeth on the bottom side which mesh with grooves cut on the periphery of the pulley to produce a positive, no-slip, constant-speed drive. Also known as cogged belt; synchronous belt.
(mechanical engineering)
A positive drive belt that has axial cogs molded on the underside of the belt which fit into grooves on the pulley; prevents slip, and makes accurate timing possible; combines the advantages of belt drives with those of chains and gears. Also known as positive drive belt.
McGraw-Hill Dictionary of Scientific & Technical Terms, 6E, Copyright © 2003 by The McGraw-Hill Companies, Inc.
References in periodicals archive ?
The gantry has a speed of 4 m/s and achieves acceleration rates of 50 m/sA over the entire working area thanks to a clever design that connects both toothed belt axes to the cross member with a single rotating toothed belt around the drive shaft.
Taking into account that in the loading mechanism there is the external force acting on the vertical rack 12 of each of four test stations, the reduced moment of resistance forces can be expressed by the following relation: [M.sub.r] = ([F.sub.r] + [F.sub.f])[v.sub.car]/[[eta].sub.red][[eta].sub.belt][[eta].sub.bear][omega], where [F.sub.r] is the total effective resistance force on electromechanical axis' slide 15 from four stations; Ff is the maximum no-load resistance to shifting of axis 7 (***, 2010); [[eta].sub.red][[eta].sub.belt][[eta].sub.bear], are the efficiencys of the gear unit (***, 2009), of the toothed belt drive, and of the rolling-contact bearing couple.
Unlike conventional toothed belt axes, which feature a full-length profile, the ELGR axis is only supported at either end, and relies on the rigidity of the steel bearing guides to ensure straight carriage movement.
It was also said to have been among the first industrial engines to use a toothed belt as camshaft drive.
* Gear trains or toothed belt assemblies incorporated into designs to accommodate rotary shaft encoders
A toothed belt is used for good torque transmission, mid pulley ratios are available to run up to 15,500 rpm at 60Hz.
The shaft movements are synchronized by a toothed belt outside the center plate.
In the case of a toothed belt, stick-slip can cause the teeth to snap off, increasing belt slippage, generating friction and heat, leading to catastrophic belt failure.
The system consists of toothed belts arranged in a roller to roller fashion, and toothed belt from drive to motor.
By integrating the load cell into the toothed belt system of the BL A420 CW, it is able to check each carton's weight and verify carton position at all times.
The C evolution is equipped with a drivetrain swing arm with liquid-cooled permanent magnet synchronous motor via a toothed belt and ring gearing.
The leading international supplier of automation equipment, Festo, has launched a new cost-effective electric toothed belt axis with high feed forces and flexible motor attachments.