Workpiece drilling clamp

Abstract

The invention discloses a positioning tool for drilling, in particular to a composite clamp which clamps workpieces with two ends being provided with thin shafts and positions cutting tools. The workpiece drilling clamp comprises clamping positioning mechanisms, a drilling template and fixed upright rods which support the drilling template; the clamping positioning mechanisms are arranged at two end portions of the workpiece; the clamping positioning mechanisms comprise lower bases and upper pressing rods; the lower bases are provided with V-shaped openings which are used for arranging the end portion of the workpiece; the openings are upward; the fixed upright rods upward penetrate the drilling templates; the upper pressing rods are positioned at the upper ends of the fixed upright rods through connecting assemblies; the upper pressing rods are vertically arranged screws; the upper ends of the upper pressing rods are provided with locking nuts, the middle penetrates the connecting assemblies, the lower ends extend into the V-shaped openings, and the diameter of the lower ends is from 0.2 to 0.8cm; central shafts of the upper pressing rods pass the bottoms of the V-shaped openings. The workpiece drilling clamp overcomes the defect that thin end portions cannot be clamped in the prior art and enables workpiece clamping and cutting tool positioning to be matched.

Description

Technical field [0001] The invention belongs to a positioning tool used when drilling a workpiece, and particularly relates to a composite clamp for clamping a workpiece with thin shafts at both ends and positioning a drilling tool. Background technique [0002] When drilling a specific workpiece in the machining industry, a three-jaw chuck (three circumferentially distributed jaws, one end of the workpiece is placed at the center, and the three jaws are squeezed toward the center to clamp Positioning the workpiece) Clamp and position the workpiece, then determine the drilling position on the fixed workpiece, and then adjust the tool to the corresponding drilling position for drilling and drilling. [0003] In the drilling process, in order to prevent the tool from producing radial (referring to the radial direction of the hole) from jumping and affecting the machining accuracy and drilling effect, a plate-shaped element drilling template is set between the tool and the workpiece (...

AI Technical Summary

Problems solved by technology

like figure 1 As shown, the front ends of the three claws 1 of the three-jaw chuck are straight. No matter how they are gathered together, there is always a triangular gap 2 between the three claws 1 and the center. According to the current size design, the gap is generally Greater than 5cm, so the existing three-jaw chuck alone cannot fix such shafts

[0005] If the fixing operation of the workpiece is not properly solved, even if the drilling template and the drill sleeve that limit the radial movement of the tool are installed, the drilling of such shaft parts will not be able to complete the drilling operation due to the unstable positioning of the workpiece itself.

Images