Flat tongs capable of clamping slender and thin-wall workpieces

Abstract

The invention discloses a pair of flat tongs capable of clamping slender and thin-wall workpieces. The pair of flat tongs comprises a fixed jaw, a movable jaw, a fixed tong body, a second fixed jaw plate and a second movable jaw plate, wherein the movable jaw is slidingly connected with the fixed tong body through a screw rod, and can be pushed to move along the fixed tong body by the screw rod; the fixed jaw is connected with the fixed tong body in a fastening manner; the second fixed jaw plate and the second movable jaw plate are fixed on the fixed jaw and the movable jaw respectively through inner hexagon bolts; and at least two steps perpendicular to each other are arranged on the inner sides of the end parts of the second fixed jaw plate and the second movable jaw plate. According to the pair of flat tongs, at least two steps perpendicular to each other are arranged on the inner sides of the end parts of the second fixed jaw plate and the second movable jaw plate, so that the slender and thin-wall workpieces can be clamped by the combination of the steps, and the pair of flat tongs clamps stably and reliably, and is short in auxiliary time and high in processing accuracy.

Description

technical field [0001] The invention relates to an improvement of a flat-nose pliers, in particular to a flat-nose pliers capable of clamping narrow and thin-walled workpieces. Background technique [0002] Flat-nose pliers are a general-purpose fixture, which is suitable for the installation of small and medium-sized and regular-shaped workpieces. It is used to clamp the workpiece for cutting by fixing it on the machine tool table. Usually, the size of the workpiece clamped by flat-nose pliers generally does not exceed the width of the jaws, otherwise the processed part will interfere with the jaws; moreover, the processed surface of the workpiece must be higher than the jaws, and the lower surface needs to be narrower and thicker than the workpiece. Appropriate and high-precision contour pads are used to prevent the workpiece from loosening during processing and affect the processing accuracy. as attached figure 1 The flat-nose pliers shown comprise fixed jaw 1, movable ...

AI Technical Summary

Problems solved by technology

Usually, the size of the workpiece clamped by flat-nose pliers generally does not exceed the width of the jaws, otherwise the processed part will interfere with the jaws; moreover, the processed surface of the workpiece must be higher than the jaws, and the lower surface needs to be narrower and thicker than the workpiece. Appropriate and high-precision contour pads to prevent the workpiece from loosening during processing and affecting processing accuracy

as attached figure 1 The flat-nose pliers shown comprise fixed jaw 1, movable jaw 2, fixed jaw body 5, first fixed jaw plate 3a and first movable jaw plate 4a; described movable jaw 2 and fixed jaw body 5 pass through The lead screw 6 is slidingly connected, and the movable jaw 2 can be pushed by the screw rod 6 to move along the fixed clamp body 5; the fixed jaw 1 and the fixed clamp body 5 are tightly connected, and the first fixed jaw plate 3a and the first movable jaw The jaw plate 4a is respectively fixed on the fixed jaw 1 and the movable jaw 2 by hexagon socket bolts; the first fixed jaw plate 3a and the first movable jaw plate 4a are flat plates respectively; the flat-nose pliers of this structure , First, for the processing of long and narrow workpieces, because the size exceeds the clamping range of the fixed jaw plate and the movable jaw plate, the workpiece is easily tilted and difficult to clamp under the action of cutting force, which cannot meet the processing requirements; Second, for the processing of thin-walled parts, due to the lack of rigidity, a contour block is required under the workpiece to avoid deformation of the workpiece due to clamping force. The processing accuracy of the contour block is high, so the workpiece preparation time Long, and prone to waste, processing efficiency is extremely low

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