Air clamper for bore hole of thin-wall cylinder sleeve

Abstract

The invention provides an air clamper for a bore hole of a thin-wall cylinder sleeve. The air clamper can steady and clamp the thin-wall cylinder sleeve, a workpiece is uniformly forced in the periphery direction, and deformation does not exist after the thin-wall cylinder sleeve is clamped, so that the processing accuracy is improved. The air clamper comprises a fixture body, wherein base plates are arranged at the bottom end of the inner cavity of the fixture body, lower taper sleeves with taper holes are arranged above the base plates, an elastic open sleeve and a spring sleeve are radially and successively arranged in the inner cavity of the fixture body above the lower taper sleeves, upper taper sleeves with the taper holes are arranged at the upper end of the spring sleeve, and the upper end and the lower end of the spring sleeve are respectively matched with conical surfaces of the upper taper sleeves and the conical surfaces of the lower taper sleeves; at least three sets of compressing devices are uniformly distributed in the periphery direction of the fixture body, and each compressing device comprises a cylinder and a cylinder seat arranged above the cylinder; and pressing arms are arranged on the cylinder seats through pin shafts, piston rods of the cylinders and the pressing arms are mounted in a matching manner, one ends of the pressing arms extend to the edge of the inner cavity of the fixture body, and stretching springs are arranged between the other ends of the pressing arms and the cylinder seats.

Description

technical field [0001] The invention relates to production equipment for auto parts, in particular to a clamping device for a thin-walled cylinder sleeve. Background technique [0002] The processing technology of the inner hole of the thin-walled cylinder liner in the prior art is rough reaming → fine reaming → rough honing → fine honing. Since the precision reaming process is restricted by the manufacturing accuracy and quality of the forming reamer, the roundness of the inner hole of the cylinder liner after reaming can only reach IT9 level, and the honing allowance is 0.3-0.35 mm. With the improvement of engine manufacturers' quality requirements for parts and components, the technical standard for cylinder liners has been upgraded from National III to National IV. The above process capability index has not reached the requirements of National IV. [0003] The reason is that during the clamping process of the cylinder set, the workpiece is deformed due to the unsatisfac...

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Problems solved by technology

[0003] The reason is that during the clamping process of the cylinder set, the workpiece is deformed due to the unsatisfactory stress state, thereby reducing the machining accuracy

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