What Is a Linear Clamper?
A linear clamper is a clamp used to hold the position of a table or stage during machining operations. It is directly attached to a linear guide and clamps to secure the position. Also known as a linear brake, these devices come in both pneumatically operated and manually lever-operated varieties.
While linear guides are commonly used in machining, traditionally, table movement has been controlled by attaching a stopper to the guide with bolts or using a balance cylinder to fix the guide. However, the former method requires time-consuming repositioning and manual installation, while the latter has limitations in terms of equipment size and accuracy. Linear clampers, which can be integrated into automatic control systems, offer compactness and precision in position control, addressing these issues.
Uses of Linear Clampers
Linear clampers are employed in various operations utilizing linear guides, particularly in machining operations that incorporate automatic control technologies like motion control. These devices are widely used for holding and positioning work tables. They help to prevent “chatter,” an abnormal vibration that can lead to loss of machining accuracy.
Specifically, linear clampers are used in operations that involve vibration, such as drilling and grinding, as well as in applications where they hold the position of presses and other heavy machinery during emergency stoppages.
Features of Linear Clampers
The adoption of linear guides in machining, especially for position retention and chatter prevention, has become increasingly significant with the widespread use of motion control systems. These systems require automatic and precise positioning of the worktable, but traditional methods using balance cylinders have posed challenges due to a trade-off between positional accuracy and the size, weight, and cost of equipment.
Linear clampers employ a direct braking mechanism that clamps onto the guide, enabling more precise and compact position control compared to conventional methods. Manually clamped linear clampers offer greater convenience and adjustability than bolted clamps. Their open or closed status can be visually verified, enhancing both accuracy and safety. Additionally, when adding these systems to existing equipment, their design allows direct attachment to the linear guide, minimizing the need for extensive modifications or changes in table size.