Slashing actuation cost

For design engineers who are looking to reduce costs without sacrificing performance and quality, a range of compact, robust low cost linear actuators could provide the solution. Micromech's LCB (low cost belt) range of linear actuators have an external sliding guidance system, with an integrated timing belt, making them an ideal low cost alternative to conventional timing belts. Installation is straightforward and the actuators are virtually maintenance-free (except for the guidance system). The replaceable slide can be changed in minutes. Motion is controlled using servo or stepper motor technology, which enables any required position or velocity profile to be achieved. In certain applications, says the company, the LCB "can even compete against expensive linear motor drives". According to Micromech, typical applications for the new actuator include: pick-and-place; packaging, labelling and wrapping systems; sensor and format adjustment (eg. back-stop); pushers, pickers and grippers; general positioning tasks; feeding; and cutting applications. Even at high speeds the actuators generate very little noise and the slide guidance system is clean and dry, so there is no need for lubrication. There are two sizes in the range. The 'LCB40' is available in up to 2m stroke, 160N thrust, 1kg to 6kg payload and a maximum speed of 8ms/sec. The 'LCB60' has a stroke up to 5.5m, up to 560N thrust, payload between 1kg and 30kg, with the same speeds as the smaller LCB40. The units have a high maximum static load bearing capacity of 1,250N and 3,850N respectively and both maintain a repeatability of ±0.2mm. The actuators can be supplied as either a component with free shaft end or fitted with a gearbox, gearbox and servo- or stepper motor, or just as a direct drive servo motor option. Drives and controls are also available to meet most speed and positioning applications. Installation and attachment to a drive system is simple due to integrated grooves which allow for easy assembly. Accessories are available for mounting and for combining LCB modules. Limit switches are also an option and can be fitted anywhere along the groove.