1st MTA adds cover-plate kits to OK-Vise range

A series of cover-plate kits has been added to the range of OK-Vise low-profile workholding equipment available from 1st Machine Tool Accessories (1st MTA).

The kits are intended to enable single-wedge machining clamps to provide an additional pull-down action.

Used in conjunction with inverted OK-Vise units, the plate kits force the clamp's jaws to move both outwards and downwards as they bear against the wedge's taper.

This generates a high-strength grip, as well as a pull-down action that draws the workpiece securely onto the fixture base.

The kits also incorporate purpose-designed bushes that improve the location of the inverted clamp by filling the recess normally occupied by the head of its tightening screw.

In addition, the bushes minimise base-plate thread wear in many high-volume applications by allowing components to be secured using a threaded stud and a hexagon nut.

The cover-plate kits can be supplied as accessories for existing single-wedge clamps or as complete sets, including new B-, D- or F-series workholding units.

Capable of generating up to 150kN clamping force, OK-Vise offers a compact and cost-effective method of retaining workpieces against fixed stops, according to the company.

They provide location in all three axes and are available in a range of configurations to meet the demands of users throughout the metalworking, plastics, aerospace and electronics industries.

The clamps' low profiles also ensure cutting tool access and the ability to machine in three planes without re-positioning for maximum accuracy and productivity.

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