Centering clamping device for ceramic thin-wall sleeve part and work method of centering clamping device

Abstract

The invention relates to a centering clamping device for a ceramic thin-wall sleeve part and a work method of the centering clamping device and belongs to the field of ceramic part machining. The centering clamping device comprises a base body shaft, movable cones and expansion cone sleeves, wherein the movable cones and the expansion cone sleeves are located at the two ends of the base body shaft, the number of the expansion cone sleeves is two, and the number of the movable cones is two. A clamping shaft is sequentially sleeved with one expansion cone sleeve and one movable cone, and an ejection shaft is sequentially sleeved with one expansion cone sleeve and one movable cone. The movable cones are in threaded connection to the clamping shaft and the ejection shaft, the expansion cone sleeves are close to end plates of the base body shaft, the expansion cone sleeves are provided with first cone faces inclined towards the movable cones, the movable cones are provided with second conefaces, and the movable cones at the two ends are screwed so that the expansion cone sleeves can be extruded to achieve the expansion action. A center hole is formed in the end portion of the ejectionshaft. A soft body material is arranged on the outer surface of a cylinder structure, and a clearance exists between the soft body material and the inner wall of the ceramic thin-wall sleeve part. Thedevice is small in weight, the cost is reduced, and the inner surface of an inner hole is not damaged; and the centering clamping device can be applied to ceramic thin-wall sleeve parts with different inner diameters at the two ends.

Description

technical field [0001] The invention relates to a centering and clamping device for ceramic thin-walled sleeve parts and a working method thereof, belonging to the technical field of ceramic parts machining. Background technique [0002] Ceramic thin-walled sleeve parts need to support the inner hole to achieve clamping when processing the outer circle. First, because the ceramics are easy to be bumped and cracked or even broken when clamped with a chuck, the product is scrapped. Second, due to the thin wall of the workpiece, it is easy to deform during clamping, which makes it difficult to meet the requirements for machining accuracy. Third, due to the unprocessed inner wall of the workpiece and the irregular cylindrical shape of the inner diameter taper, the traditional mandrel internal support method cannot be clamped, and steel tooling such as static pressure expansion mandrel and plastic mandrel are used when clamping ceramic workpieces. Will cause damage to the inner...

AI Technical Summary

Problems solved by technology

First, because the ceramics are easy to be bumped and cracked or even broken when clamped with a chuck, the product is scrapped

Second, due to the thin wall of the workpiece, it is easy to deform during clamping, making it difficult to meet the machining accuracy requirements

Third, due to the unprocessed inner wall of the workpiece and the irregular cylindrical shape of the inner diameter taper, the traditional mandrel internal support method cannot be clamped, and steel tooling such as static pressure expansion mandrel and plastic mandrel are used when clamping ceramic workpieces. Will cause damage to the inner wall, not applicable

[0003] In the prior art, most of the clamping devices are only for straight cylindrical thin-walled sleeve parts with the same diameter at both ends. Thin-walled sleeve devices are not applicable

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