Centering and clamping device for internal surfaces of sleeve workpieces

Abstract

The invention provides a centering and clamping device for the internal surfaces of sleeve workpieces, and belongs to the technical field of machining. The centering and clamping device comprises an ejection rod, a gear, a rack, a frustum, a pull rod, a pressing plate and an elastic conical barrel. The frustum is installed in a frustum mounting groove in the upper end of a supporting sleeve in a threaded mode. The ejection rod is arranged in an ejection rod sliding chute of the supporting sleeve in an up-down sliding mode. The inner side of the gear and a multi-head trapezoidal thread section at the lower end of the ejection rod are matched through a multi-head trapezoidal thread pair. The rack is arranged on a rack guide base in a slideable mode and is further engaged with an external gear at the outer side of the gear. The pull rod is arranged on a pull rod sliding chute of the frustum in an up-down sliding mode. The elastic conical barrel is arranged on the frustum in a slideable mode. The pressing plate is installed at the upper end of the pull rod. The lower end face of the pressing plate is attached to the upper end face of the elastic conical barrel. The upper end of a compression spring is attached to the lower end face of the pressing plate, and the lower end of the compression spring is attached to a spring supporting groove above the frustum. By means of the centering and clamping device for the internal surfaces of the sleeve workpieces, the internal surfaces of the sleeve workpieces can be centered and clamped quickly, the clamping effect is good and the applicability is high.

Description

technical field [0001] The invention relates to the technical field of fixtures, in particular to a centering clamping device for the inner surface of a sleeve-like workpiece. Background technique [0002] A fixture is a device used to fix the processing object in the process of mechanical manufacturing so that it occupies the correct position for construction or inspection. In a broad sense, any process in the process, the device used to install the workpiece quickly, conveniently and safely, can be called a fixture. Such as welding fixtures, inspection fixtures, assembly fixtures, machine tool fixtures, etc. Among them, machine tool fixtures are the most common, often referred to as fixtures. When processing a workpiece on a machine tool, in order to make the surface of the workpiece meet the technical requirements such as the size, geometric shape, and position accuracy with other surfaces specified in the drawing, the workpiece must be installed and clamped firmly befo...

AI Technical Summary

Problems solved by technology

The sleeve is a common part, which is widely used to support shaft workpieces. During the processing of the sleeve, it is necessary to realize the centering and clamping of the inner surface of the sleeve, which cannot be achieved by common ordinary fixtures.

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