SU113078A1 - Three-component electromechanical measuring caliper - Google Patents

Description

Three-component electromechanical calipers for measuring the magnitudes of the component forces for cutting wood and other anisatropic materials, in particular, on woodworking machines, are equipped with an electrical measuring device, made according to the measuring bridge circuit with an oscilloscope for recording the caliper readings, and elastic sensing elements with glued on them strain gauges as sensors. These calipers have the disadvantage that they cannot be installed on any one, in particular, a woodworking machine regardless of the design of the latter, and do not provide high accuracy of measurement.

This drawback is eliminated in the described three-component measuring caliper by the fact that the mechanical part of the caliper is made as a holder mounted in a closed case with grips for the wood sample connected by hinge clamps with other sensitive elements that perceive the composite values of the cutting force. These elements are made in the form of metal rings, which are grouped on two opposite sides of each gripper, intended for pneumatics and measured conditions in the direction of the other, cutting and feed cut, and also in the direction perpendicular to the two indicated forces.

Pa figs. 1 shows a caliper in front; in fig. 2 - from above; in fig. 3 - from the side.

The caliper consists of a steel body / and two symmetrically arranged articulated arms for fastening the specimen. The hooks are made in the form of a skeleton 2, lever hinge clamps 3, bolts 4 and nuts 5; The grippers are rigidly fixed in the caliper of a test sample of wood 6, which, together with the grips, is suspended inside the caliper body on eight elastic steel rings. Each ring with wire resistance sensors glued on its outer and inner surfaces (four sensors per ring) is sensing No. 113078-2 -

an element intended to register component cutting forces. The pairs of rings are interconnected electrically in a pavement measuring circuit.

The rings 7 and 8 are designed to register the horizontal component of the cutting force, the ring 9 and 10 to register the vertical component, and the rings //, 12, 13 and 14 to register side spinning. All eight rings are fixed with one side with screws to the cores 2 and fixed with the clamp 15 with the opposite side.

Windows and screw holes are provided in the caliper housing, through which each ring is fixed rigidly to the clamp and to the housing with a screw 16.

The caliper case is placed in a wooden box 17, and the bottom is closed by a removable textolite shield. On the sides of the crate, there are removable movable wooden plates 18, on which the caliper rests when installed on the machine.

Subject invention

Claims (2)

1. Three-component electromechanical measuring caliper for measuring component forces, cutting, in particular, on woodworking machines measured by an electrical device according to a balanced measuring bridge with a loop oscilloscope for recording the readings of the caliper and elastic sensing elements with glued on them with wire strain gauges as sensors , characterized in that, in order to measure the component cutting forces on any woodworking machines, on their design, the mechanical part is formed as a caliper mounted in a closed housing with a holder for the specimen timber gripper, coupled by hinge clamps with elastic sensing elements, the sensing moieties cutting force. 2. The form of the measurement caliper according to claim 1, wherein the elastic sensing elements are made in the form of metal rings grouped on two opposite sides of each gripper, designed to receive the measured forces in the direction of movement and feed of cutting, as well as in the direction of perpendicular to the two indicated forces. W 15